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The Tata Group’s foray into technology has always been marked by innovation and excellence. With Tata Technologies’ upcoming IPO, the group is set to further its legacy in the tech world.

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Get the most recent info and news about Nextware Technologies on HackerNoon, where 10k+ technologists publish stories for 4M+ monthly readers.

Nextware Technologies

Today PHP is one of the most widely used programming languages in the world. Its popularity is attributable to some factors: most web platforms are already written in PHP, it’s fast and open-source, and there is a large PHP community to support it. PHP was initially made for web development, particularly for server-side programming of web applications. According to W2Techs, . The language resources and its particular qualities made PHP top-rated and much-in-demand service for hundreds of software development companies. about 80% of all websites have PHP backend To identify the 20 most prominent providers of PHP services, we used specific market research criteria and analyzed 500 web development companies. Among these criteria are PHP expertise, online reviews, market presence, geographic strategy, industry experience, and portfolio. A short description and key facts accompany every firm shortlisted for the rating. 1. Hidden Brains Founded in 2003, Hidden Brains is a software development company offering its services to more than 11 major business domains. The company has cooperated with clients from 102 countries. Hidden Brains provides dedicated development teams that use PHP for delivering online stores solutions, e-learning platforms, CRM, and enterprise portals. Ahmedabad, India Location: 250–999 Number of employees: McAfee, LSI, SanDisk, Raymond, Orange, Maxtor Key clients: Mobile App Development, Web Development, Artificial Intelligence Major service lines: Website: https://www.hiddenbrains.com/ 2. Daffodil Established in 1999, Daffodil is an IT company that offers web and mobile application development. The company delivers PHP product development for more than 12 main domains, including Ecommerce, Education, Healthcare, Social Networking, and other. Daffodil also helps its clients with PHP API development and team augmentation. Gurgaon, India Location: 250–999 Number of employees: Nokia, Lenskart, Lybrate, Sony Key clients: Custom Software Development, Mobile App Development, Web Development Major service lines: Website: https://www.daffodilsw.com/ 3. Seasia Infotech Since 2000, Seasia Infotech has been providing web and mobile application development. Today the company’s portfolio includes 2500+ completed projects. The company offers dedicated teams of PHP developers who deliver web applications, social media, ecommerce portals, and more. Among the company’s clients are The World Bank, The International Red Cross, and Flipkart. Mohali, India Location: 250–999 Number of employees: The World Bank, The International Red Cross, Flipkart Key clients: Web Development, Mobile App Development Major service lines: Website: https://www.seasiainfotech.com/ 4. HQSoftware Established in 2001, HQSoftware is a company that started as a PHP development firm. Today it has 76 professionals on board, who have already helped 300+ customers. The company provides the following PHP services: web application development, PHP software reengineering, and dedicated teams of PHP developers. Tallinn, Estonia Location: 50–249 Number of employees: Skoda, Bell, Sega, HTC, BBC, World Health Organization Key clients: IoT Development, Web Development Major service lines: Website: https://hqsoftwarelab.com/ 5. Vrinsoft Established in 2009, Vrinsoft is a custom software provider that has already helped more than 780 clients. By offering its dedicated development teams, the company serves more than seven countries globally. Vrinsoft delivers PHP development of a large number of software solutions, including CMS, DMS, online stores, and other. Glendale, CA Location: 50–249 Number of employees: Mitsubishi, DJI, Porsche, Myhealth1st, Flexipool, Apply Parking Key clients: Mobile App Development, Ecommerce Development, Web Development Major service lines: Website: https://www.vrinsofts.com/ 6. CDN Software Solutions Founded in 2000, CDN is a leading custom software development company in the USA with a team of 270+ professional developers. The company serves startups, enterprises, and medium-sized businesses. CDN provides PHP development of web applications, including ecommerce and financial platforms. The company also delivers testing services. Phoenix, AZ Location: 250–999 Number of employees: Toad Square Pty. Ltd, Agility Corp, WallTrot LLC Key clients: Custom Software Development, Mobile App Development Major service lines: Website: https://www.cdnsol.com/ 7. Iflexion Iflexion is a USA-based custom software development company that has helped more than 500 clients, among which are Philips, PayPal, Expedia, eBay, and other. The company delivers its services to 30+ countries and works with all of the major domains, including IT, Finance, Media, and Retail. By deploying PHP programming language, the company’s team of 850+ engineers develops websites, CMS and CRM, ecommerce platforms, social networks, and APIs. Denver, CO Location: 50–249 Number of employees: Philips, PayPal, Expedia, eBay, Cisco, Pepsi Key clients: Mobile App Development, Web Development Major service lines: Website: https://www.iflexion.com/ 8. Debut Infotech Established in 2011, Debut Infotech is a company that provides custom web and mobile app development. The company offers PHP development of various websites, from online stores to training platforms. Debut Infotech has been working with more than 160 clients, to whom it delivered more than 300 projects. Mohali, India Location: 10–49 Number of employees: HDFC Bank, KFC, Best Western Hotel, BlueScope Key clients: Mobile App Development, Web Development, Custom Software Development Major service lines: Website: https://www.debutinfotech.com/ 9. Nextware Technologies Established in 2006, Nextware Technologies is a software development company currently based in the USA. The company delivers consulting and development services for Finance, Healthcare, IT, Government, and more. Nextware Technologies offers such PHP-related services as PHP web development, dedicated development teams providing, and testing. Santa Monica, CA Location: 2–9 Number of employees: Landor, Lawrence Livermore National Laboratories, American Red Cross Key clients: Custom Software Development, Mobile App Development Major service lines: Website: http://www.nextwaretech.com/ 10. CMARIX Having delivered 1100+ web and 290+ mobile applications, CMARIX has helped dozens of clients from 46 countries all around the world. The company serves 12 industries, including Commerce, Real Estate, Finance, and Healthcare. CMARIX uses PHP for the development of custom websites, CMS, ecommerce platforms, social networks, and more. The company also provides its clients with team augmentation. Gujarat, India Location: 50–249 Number of employees: Schneider Electric, Swissmade, CapitalOne, Checkin Key clients: Web Development, Custom Software Development Major service lines: Website: https://www.cmarix.com/ 11. TechTIQ Solutions Headquartered in the UK, TechTIQ is a custom software provider of mobile/web applications. The company serves eight major business domains among which are Healthcare, Retail, and Commerce. TechTIQ offers dedicated teams that develop PHP-based CMS, online stores, social networks, e-learning platforms, and other various-purpose web applications. London, United Kingdom Location: 10–49 Number of employees: Imperial College London, University of Oxford, Wellclik, QuickPick Key clients: Mobile App Development, Custom Software Development Major service lines: Website: https://www.techtiq.co.uk/ 12. Consagous With three offices in the USA, UK, and India, Consagous is an IT service provider with 11 years of experience. The company delivers end-to-end mobile and web development. By using PHP, the company creates web solutions for a significant number of industries, including Healthcare, Automotive, Finance, Education, and Government. Austin, TX Location: 50–249 Number of employees: Clinic Fly, Desk Worm, Cargo Eye, Bra-voe Key clients: Custom Software Development, Mobile App Development, Wearable App Development Major service lines: Website: https://www.consagous.com/ 13. 247 Labs 297 Labs is a Toronto-based software company that delivers web/mobile applications and UI/UX design. The company unites certified PHP developers that specialize in Ecommerce solution creation. Some of the key clients of 247 Labs are such companies as Johnson & Johnson, General Motors, Motorola, Ontario Government, and other. Toronto, Canada Location: 10–49 Number of employees: General Motors, Motorola, Rogers Communications, Fido, Ontario Government Key clients: Web Development, Mobile App Development, Web Design Major service lines: Website: https://247labs.com/ 14. Codiant Headquartered in the USA, Codiant is a software development company that has three offices in Europe, Australia, and Asia. During eight years of work, Codiant has carried out more than 700 IT projects. Codiant provides PHP development of websites, mobile applications, ecommerce stores, and CMS and improves its solutions with MySQL, AJAX, and jQuery. East Moline, IL Location: 50–249 Number of employees: CareClix, SixTaxi, TaxiApp UK, Fantopias, Hoffr, Gandhistreet Key clients: Mobile App Development, Web Development, Blockchain Major service lines: Website: https://www.codiant.com/ 15. WebClues With 80 professionals aboard, WebClues is a custom software development company that delivers web/mobile app and UI/UX design development. It has already cooperated with 500 worldwide customers, among which are Dental Network, British Deco, Tryn Tryn, and other. WebClues offers PHP development of web applications for various industries, including Healthcare, Education, and Retail. Streetsboro, OH Location: 50–249 Number of employees: Laundrokart, Waterdrop, Tiledealer, Ecoaquaeurope Key clients: Mobile App Development, Web Development, Ecommerce Development Major service lines: Website: https://www.webcluesinfotech.com/ 16. Zealous System Founded in 2008, Zealous System is a company that provides full-cycle custom software development and has its offices in six countries all around the world. Zealous offers PHP consulting and development and provides software solutions for ecommerce websites, online booking/ticketing systems, e-learning platforms, live broadcasting applications, and more. Ahmedabad, India Location: 50–249 Number of employees: Not Revealed Key clients: Mobile App Development, Web Development, Custom Software Development Major service lines: Website: https://www.zealousys.com/ 17. iQlance Solutions iQlance is a Canadian company delivering a large number of software development solutions. Since 2011, the company has offered 1500+ projects and helped 200+ clients. iQlance provides full-cycle PHP development of CRM, ERP, enterprise portals, SCM, HRM, and EIS. The company also offers testing and support. Toronto, Canada Location: 10–49 Number of employees: String Flix, Career Builder, Buesor Key clients: Mobile App Development, Web Development Major service lines: Website: https://www.iqlance.com/ 18. Infigic Infigic is an IT outsourcing company that provides full-cycle web and mobile development. The company’s domain focus includes Ecommerce, Healthcare, and Consumer Services. Infigic employs PHP while creating software solutions for ecommerce platforms, social networks, CMS, payment gateways, automation tools, and more. Ahmedabad, India Location: 10–49 Number of employees: The Opal, Motocross World, RDB Concepts, Magtec Key clients: Mobile App Development, Ecommerce Development Major service lines: Website: https://www.infigic.com/ 19. Matellio Matellio is a California-based software design and development company delivering end-to-end web/mobile development. The company offers PHP development of various platforms for the following industries: Commerce, Education, Real Estate, Retail, Social Networking, Logistics, Healthcare, and more. When delivering its services, Matellio offers PHP dedicated development teams. San Jose, CA Location: 50–249 Number of employees: Hewlett Packard Enterprise, AirFusion, CardGlobal, Nervve, Brideside Key clients: Mobile App Development, Web Development Major service lines: Website: https://www.matellio.com/ 20. Onlinico Atlanta-based Onlinico is a software development services provider that has completed 37 projects. The company unites 34 IT professionals. While deploying PHP programming language, Onlinico offers custom web applications development and API development. The company also provides its customers with PHP dedicated development teams. Atlanta, GA Location: 10–49 Number of employees: Life4Me+, Crew, In-Depth, Redcapture Key clients: Custom Software Development, Mobile App Development, Web Development Major service lines: Website: https://www.onlini.co/

Top PHP Development Companies

Top Web Development Companies in 2018

Part of my responsibilities as a Network Programmer early in my career included supporting an enterprise implementation of . It was the mid-1990s, and Novell had a dominant hold on the network operating system market. I decided it would be in my best interest to become a Certified Novell Engineer (CNE). A few months and several intense examinations later, I obtained my very own version of this certificate: Novell NetWare The most demanding examination in the series focused on networking concepts and the , which provides seven layers for computer systems to use when communicating over a network. OSI model That particular exam instilled a curiosity inside of me that has remained top-of-mind over 25 years later. The CNE certification experience trained me to look “under the hood” when considering new technologies, solutions, and frameworks. After having a very positive experience with my “ “ publication, I felt that I needed to dive deeper to understand the design for a service that promises Zero DevOps. Spend Zero Time on DevOps with Render PaaS What Is Render? Render offers a unified cloud designed for software engineers looking to deploy rapidly. The platform lives in an ecosystem that scales nicely. Imagine being able to get the benefits of AWS, GCP, and Azure with the ease-of-use found with solutions like Heroku. This foundational design is promoted in tandem with the Zero DevOps promise, making every deployment as simple as what is displayed below: In this three-step model, the developer selects the service type first, then specifies some basic information for the initial deployment. Pressing the button starts the process for the service run on the Render platform. Deploy That third step is what happens in the future. Basically, when you push changes to the specified branch (main in the example above), the code will automatically deploy onto Render without any further action. Since this premise sounds amazing, the CNE-exam-passing side of me needs to know what Render looks like “under the hood.” Architecture and Design In talking with the engineering team at Render, I learned that they provide hosting services from multiple cloud providers. All the services use Cloudflare for DDoS protection and CDN. Render has purposely focused on creating cloud, provider-agnostic solutions to avoid being tied to any set of providers or services. This means that a year from now, the technologies behind the scenes could change without having an impact on existing Render customers. Inside the Render unified cloud, the engineering team leverages containers, PostgreSQL, Kubernetes, Go, JavaScript, Git, Redis, and Let’s Encrypt for their internal design. To support Git-based push/merge deployments, connectors exist between Render and GitHub/GitLab. For the Render Dashboard user interface, the Render engineering team uses React and GraphQL to allow customers to configure and maintain their services running on the platform. Where Render Provides Value When I started looking at Render, I honestly wasn’t excited about what appeared to be yet another platform competing in this space. But as I started to dive deeper into the Render ecosystem, I saw a platform that is far more versatile and scalable. To clarify, if I were to review the last five major projects I have worked on as a part of the CleanSlate Technology Group engineering team, all of them exceeded the most feasible implementation with the Heroku service. This is because Heroku seems to be a great fit for smaller to midsize applications where scalability and flexibility over time are not concerns. This concept is often referred to as the “graduation problem,” meaning a service often has to be graduated to a more versatile option as it matures or gains momentum. For large-size applications, Heroku can present the following challenges: Horizontal scaling needs can have a non-linear impact on your budget Implementation of marketplace-type add-ons can result in higher than expected charges as usage grows Solution architecture evolution may require options that do not exist on the platform, resulting in “round peg in a square hole” designs By contrast, Render provides a solution that eliminates the graduation problem—regardless of the size of the project—by providing flexible and affordable solutions at every tier of hardware and services. Some additional benefits Render provides over their competitors:** Render gives every customer private networking between their services. This is something that is often offered for "enterprise" customers who sign a contract, and they are charged a hefty monthly fee for each private space. As a deployed system of services gets more complex, private networking becomes more important for both latencies between services and also to reduce the risk of network traffic leaking data. Render offers a persistent disk option. While this "breaks" the 12 factors (12factor.net) philosophy, some services cannot function without an attached disk. Render offers free static sites, while competitors require a new app to serve a static site – or use GitHub Pages or a similar 3rd party offering. But Wait… There’s More The software engineers at Render also realized that customers are often looking for more than just client and API services (such as JAM-stack style) for their applications. Consider these features which are already available in the Render unified cloud: Private Services: Services that are not exposed publicly, but are available via automatic discovery. They can listen on any non-HTTP port. Example: cache or database services. Background Worker: Similar to private services, but without an exposed port. Examples include message queue consumers and processors. Cron Jobs: Scheduled jobs which live in a Git-based repository. Blueprints: Infrastructure-as-code, allowing every aspect of your service infrastructure to be maintained inside a Git-based repository. These four items are truly game changers when comparing Render to their competition. Conclusion I started looking “under the hood” at technology solutions over 25 years ago in order to gain confidence in a product, solution, or framework. I will always remember the first time I completed this exercise with Spring Boot, walking away with a high degree of satisfaction with the Java-based micro-framework by Pivotal. Now, by completing this same exercise with Render, I feel that same level of confidence—not only for prototype-level applications but for enterprise-grade solutions as well. This differs greatly from my prior experience, where I have always maintained the understanding that I would eventually have to migrate once my “graduation problem” became a reality. Since 2021, I have been trying to live by the following mission statement, which I feel can apply to any IT professional: “Focus your time on delivering features/functionality which extends the value of your intellectual property. Leverage frameworks, products, and services for everything else.” ** ** - J. Vester I truly feel like Render adheres to my personal mission statement for two reasons. First, it lives up to the Zero DevOps promise by allowing feature and service teams to stay focused on producing solid solutions. Second, it removes the longer-term burdens associated with the “graduation problem” that you would face with every other competitor in this market. If you are a software engineer curious about alternative options with your cloud service provider, I highly recommend giving Render a try … which can you do at zero cost just by visiting the following URL: https://dashboard.render.com/register Have a really great day! Also Published here

The Perfect Cloud: AWS, GCP and Azure all-in-one

The Future Since 1999

Infinite Scrolling vs Pagination: Making the Right Choice for React Apps

A lot of open-source invoice management apps are built with Laravel. As a Javascript developer, I wanted to build the “React Solution” for devs that are familiar with React and Javascript. A problem I found when building with services in Node.js is that there is no built-in mailer. So, I had to find a 3rd party service to do that for me. In this article, I will be integrating to send emails for this project . Courier https://github.com/fazzaamiarso/invoys Pre-requisites As this article isn’t your typical follow-along (more like “please sit tight and see how I do it”), it’s not mandatory to be familiar with all technologies used. However, familiarity with Typescript and Next.js will be beneficial for quicker understanding. Technologies in this blog: : type-safety and auto-completion are the best, right? Typescript : a production-ready framework to build a full-stack app, even for beginners. Next.js : a great ORM to work with databases. We use Prisma because of its type-safety and auto-completion, providing great developer experience with typescript added. Prisma : enable us to easily build end-to-end type-safety between our Next.js client and server. Trpc Courier API: a great service/platform to handle our notifications, such as email, SMS, and much more. You can find the full for reference. source code here Goals Before building the features, let’s define our goals. Send invoice link to client’s email. Send a reminder a day before an invoice’s due date. Cancel an invoice due date reminder when the invoice is already paid. Handling network errors. Part 1: Setup Courier Platform Let’s head over to the Courier Dashboard. By default, it’s in a production environment. Since I want to test things out, I’m going to change to the test environment by clicking the dropdown in the top-right corner. We can copy all templates later to production or vice-versa. Now, I will create a for my email notifications. brand I’m just going to add a logo (beware that the logo width is fixed to 140px) on the header and social links on the footer. The designer UI is pretty straightforward, so here is the final result. Don’t forget to publish the changes. Part 2: Send Invoice to Email Currently, the send email button on the UI is doing nothing. I’m going to create a file in to keep all Courier-related code. Also, I will use which already abstracted all Courier API endpoints to functions. courier.ts src/lib/ courier node.js client library Before I build the functionality, let’s create the email notification design within Courier’s Designer and set up the Gmail provider. On the email designer page, we will see that the created brand is already integrated. After that, let’s design the template accordingly with the needed data. Here is the final result. Notice the value with that becomes green, it means it's a variable that can be inserted dynamically. I also set the 'See Invoice' button (or action) with a variable. {} Before I can use the template, I need to create a by clicking the preview tab. Then, it will show a prompt to name the event and set in JSON format. That data field is what will populate the value of the green variables (the data can be set from code also). Since it's a test event, I will fill it with arbitrary values. test event data {} Next, I will publish the template so I can use it. Then, go to send tab. It will show the necessary code to send the email programmatically and the will be populated with the previous that I created. data test event Backend I will copy the test to the file and copy the snippet to . AUTH_TOKEN .env src/lib/courier.ts const authToken = process.env.COURIER_AUTH_TOKEN;

// email to receive all sent notifications in DEVELOPMENT mode
const testEmail = process.env.COURIER_TEST_EMAIL;

const INVOICE_TEMPLATE_ID = <TEMPLATE_ID>;

const courierClient = CourierClient({
  authorizationToken: authToken,
}); Create a function that will be responsible for sending an email. To send an email from the code, I use the function. sendInvoice courierClient.send() // src/lib/courier.ts

export const sendInvoice = async ({
  customerName,
  invoiceNumber,
  invoiceViewUrl,
  emailTo,
  productName,
  dueDate,
}: SendInvoice) => {

const recipientEmail = process.env.NODE_ENV === "production" ? emailTo : testEmail;

const { requestId } = await courierClient.send({
      message: {
        to: {
          email: recipientEmail,
        },
        template: INVOICE_TEMPLATE_ID,
        // Data for courier template designer
        data: {
          customerName,
          invoiceNumber,
          invoiceViewUrl,
          productName,
          dueDate,
        },
      },
    });
    return requestId
}; Define types for the function. sendInvoice // src/lib/courier.ts

interface SendInvoice {
  productName: string;
  dueDate: string;
  customerName: string;
  invoiceNumber: string;
  invoiceViewUrl: string;
  emailTo: string;
} Now that I can send the email, I will call it in the trpc endpoint that resides in . sendEmail src/server/trpc/router/invoice.ts Just remember that trpc endpoint is a Next.js API route. In this case, sendEmail will be the same as calling the /api/trpc/sendEmail route with fetch under the hood. For more explanation . https://trpc.io/docs/quickstart // src/server/trpc/router/invoice.ts
import { sendInvoice } from '@lib/courier';
import { dayjs } from '@lib/dayjs';

// .....SOMEWHERE BELOW
  sendEmail: protectedProcedure
    .input(
      z.object({
        customerName: z.string(),
        invoiceNumber: z.string(),
        invoiceViewUrl: z.string(),
        emailTo: z.string(),
        invoiceId: z.string(),
        productName: z.string(),
        dueDate: z.date(),
      })
    )
    .mutation(async ({ input }) => {
      const invoiceData = {
        ...input,
        dueDate: dayjs(input.dueDate).format('D MMMM YYYY'),
      };

      await sendInvoice(invoiceData);
    }), For those who are unfamiliar with trpc, what I did is the same as handling a request. Let's break it down. POST Trpc way of defining by validating with Zod. Here I define all data that are needed for the function. request input from client sendInvoice .input(
      z.object({
        customerName: z.string(),
        invoiceNumber: z.string(),
        invoiceViewUrl: z.string(),
        emailTo: z.string(),
        invoiceId: z.string(),
        productName: z.string(),
        dueDate: z.date(),
      })
    ) Define a request handler (mutation). POST // input from before
 .mutation(async ({ input }) => {
      const invoiceData = {
        ...input,
        // format a date to string with a defined format. 
        dueDate: dayjs(input.dueDate).format('D MMMM YYYY'), // ex.'2 January 2023'
      };

      // send the email
      await sendInvoice(invoiceData);
    }), Frontend Now, I can start to add the functionality to the send email button. I’m going to use the function which is a thin wrapper of useMutation`. trpc.useMutation() tanstack-query's Let’s add the mutation function. On successful response, I want to send a success toast on UI. //src/pages/invoices/[invoiceId]/index.tsx
import toast from 'react-hot-toast';

const InvoiceDetail: NextPage = () => {
// calling the `sendEmail` trpc endpoint with tanstack-query.
  const sendEmailMutation = trpc.invoice.sendEmail.useMutation({
    onSuccess() {
      toast.success('Email sent!');
    }
  });

} I can just use the function as an inline handler, but I want to create a new handler for the button. //src/pages/invoices/[invoiceId]/index.tsx

 // still inside the InvoiceDetail component
 const sendInvoiceEmail = () => {
    const hostUrl = window.location.origin;

   // prevent a user from spamming when the API call is not done.
    if (sendEmailMutation.isLoading) return;

    // send input data to `sendEmail` trpc endpoint
    sendEmailMutation.mutate({
      customerName: invoiceDetail.customer.name,
      invoiceNumber: `#${invoiceDetail.invoiceNumber}`,
      invoiceViewUrl: `${hostUrl}/invoices/${invoiceDetail.id}/preview`,
      emailTo: invoiceDetail.customer.email,
      invoiceId: invoiceDetail.id,
      dueDate: invoiceDetail.dueDate,
      productName: invoiceDetail.name,
    });
  }; Now I can attach the handler to the send email button. //src/pages/invoices/[invoiceId]/index.tsx

<Button
   variant="primary"
   onClick={sendInvoiceEmail}
   isLoading={sendEmailMutation.isLoading}>
   Send to Email
</Button> Here’s the working UI. Part 3: Send Payment Reminder To schedule a reminder that will be sent a day before an invoice’s due date, I’m going to use . Courier’s Automation API First, let’s design the email template in Courier designer. As I already go through the process before, here is the final result. Before adding the function, define the types for the parameter and refactor the types. // src/lib/courier

interface CourierBaseData {
  customerName: string;
  invoiceNumber: string;
  invoiceViewUrl: string;
  emailTo: string;
}

interface SendInvoice extends CourierBaseData {
  productName: string;
  dueDate: string;
}

interface ScheduleReminder extends CourierBaseData {
  scheduledDate: Date;
  invoiceId: string;
} Now, I add the function to scheduleReminder src/lib/courier //src/pages/invoices/[invoiceId]/index.tsx

// check if the development environment is production
const __IS_PROD__ = process.env.NODE_ENV === 'production';

const PAYMENT_REMINDER_TEMPLATE_ID = '<TEMPLATE_ID>';

export const scheduleReminder = async ({
  scheduledDate,
  emailTo,
  invoiceViewUrl,
  invoiceId,
  customerName,
  invoiceNumber,
}: ScheduleReminder) => {

  // delay until a day before due date in production, else 20 seconds after sent for development
  const delayUntilDate = __IS_PROD__
    ? scheduledDate
    : new Date(Date.now() + SECOND_TO_MS * 20);

  const recipientEmail = __IS_PROD__ ? emailTo : testEmail;

   // define the  automation steps programmatically
   const { runId } = await courierClient.automations.invokeAdHocAutomation({
     automation: {
       steps: [
         // 1. Set delay for the next steps until given date in ISO string
          { action: 'delay', until: delayUntilDate.toISOString() },

          // 2. Send the email notification. Equivalent to `courierClient.send()`
          {
            action: 'send',
            message: {
              to: { email: recipientEmail },
              template: PAYMENT_REMINDER_TEMPLATE_ID,
              data: {
                invoiceViewUrl,
                customerName,
                invoiceNumber,
              },
            },
          },
        ],
      },
    });

   return runId;
}; To send the reminder, I will call after a successful attempt. Let's modify the trpc endpoint. scheduleReminder sendInvoice sendEmail // src/server/trpc/router/invoice.ts

sendEmail: protectedProcedure
    .input(..) // omitted for brevity
    .mutation(async ({ input }) => {
      // multiplier for converting day to milliseconds.
      const DAY_TO_MS = 1000 * 60 * 60 * 24;

      // get a day before the due date
      const scheduledDate = new Date(input.dueDate.getTime() - DAY_TO_MS * 1);

      const invoiceData = {..}; //omitted for brevity

      await sendInvoice(invoiceData);

      //after the invoice is sent, schedule the reminder
      await scheduleReminder({
        ...invoiceData,
            scheduledDate,
      });
    } Now if I try to send an invoice by email, I should get a reminder 20 seconds later since I’m in the development environment. Part 4: Cancel a reminder Finally, all the features are ready. However, I got a problem, what if a client had paid before the scheduled date for payment reminder? Currently, the reminder email will still be sent. That’s not a great user experience and potentially a confused client. Thankfully, Courier has an automation cancellation feature. Let’s add function that can cancel any automation workflow in . cancelAutomationWorkflow src/lib/courier.ts export const cancelAutomationWorkflow = async ({
  cancelation_token,
}: {
  cancelation_token: string;
}) => {
    const { runId } = await courierClient.automations.invokeAdHocAutomation({
      automation: {
        // define a cancel action, that sends a cancelation_token
        steps: [{ action: 'cancel', cancelation_token }],
      },
    });

   return runId;
}; What is a cancelation_token? It’s a unique token that can be set to an automation workflow, so it’s cancelable by sending a action with a matching . cancel cancelation_token Add cancelation_token to , I use the invoice's Id as a token. scheduleReminder // src/lib/courier.ts

export const scheduleReminder = async (..) => {
  // ...omitted for brevity

  const { runId } = await courierClient.automations.invokeAdHocAutomation({
    automation: {
      // add cancelation token here
      cancelation_token: `${invoiceId}-reminder`,
      steps: [
        { action: 'delay', until: delayUntilDate.toISOString() },

  // ... omitted for brevity I will call when an invoice's status is updated to in the trpc endpoint. cancelAutomationWorkflow PAID updateStatus // src/server/trpc/router/invoice.ts

 updateStatus: protectedProcedure
    .input(..) // omitted for brevity
    .mutation(async ({ ctx, input }) => {
      const { invoiceId, status } = input;

      // update an invoice's status in database
      const updatedInvoice = await ctx.prisma.invoice.update({
        where: { id: invoiceId },
        data: { status },
      });

      // cancel payment reminder automation workflow if the status is paid.
      if (updatedInvoice.status === 'PAID') {

        //call the cancel workflow to cancel the payment reminder for matching cancelation_token.
        await cancelAutomationWorkflow({
          cancelation_token: `${invoiceId}-reminder`,
        });
      }

      return updatedStatus;
    }), Here is the working UI. Part 5: Error Handling An important note when doing network requests is there are possibilities of failed requests/errors. I want to handle the error by throwing it to the client, so it can be reflected in UI. On error, Courier API throws an error with type by default. I will also have all functions' return value in consistent with the below format. CourierHttpClientError src/lib/courier.ts // On Success
type SuccessResponse = { data: any, error: null }

// On Error
type ErrorResponse = { data: any, error: string } Now, I can handle errors by adding a block to all functions in . try-catch src/lib/courier.ts try {
  // ..function code

  // modified return example
  return { data: runId, error: null };

} catch (error) {
  // make sure it's an error from Courier
  if (error instanceof CourierHttpClientError) {
      return { data: error.data, error: error.message };
    } else {
      return { data: null, error: "Something went wrong!" };
    }
} Let’s see a handling example on the trpc endpoint. sendEmail // src/server/trpc/router/invoice.ts

  const { error: sendError } = await sendInvoice(..);
  if (sendError) throw new TRPCClientError(sendError);

  const { error: scheduleError } = await scheduleReminder(..);
  if (scheduleError) throw new TRPCClientError(scheduleError); Part 6: Go To Production Now that all templates are ready, I will copy all assets in the test environment to production. Here is an example. Conclusion Finally, all the features are integrated with Courier. We’ve gone through a workflow of integrating Courier API to a Next.js application. Although it’s in Next.js and trpc, the workflow will be pretty much the same with any other technology. I hope now you can integrate Courier into your application by yourself. Get started now: https://app.courier.com/signup About the Author I’m Fazza Razaq Amiarso, a full-stack web developer from Indonesia. I’m also an Open Source enthusiast. I love to share my knowledge and learning . I occasionally help other developers on in my free time. on my blog FrontendMentor Connect with me on . LinkedIn Quick Links 🔗 Courier Docs 🔗 Contribute to Invoys 🔗 Invoys Motivation Also published . here

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