Hackernoon logoDespite the overload, emails are here to stay by@gwapitapp

Despite the overload, emails are here to stay


Are emails still worth it? Do they live up their hype? Now that we reached 2018, some could think email has done its time: riddled by spams and unsavory practices, the medium might have lost any remaining utility.

Appearances are misleading and email is yet another support to demonstrates the accuracy of the adage. We’ll dive deeper into the data below, but before let’s approach the issue from a higher-level perspective.


Despite his old age, email is still very much alive. Doubtful? Please answer these two questions for me:

  1. How many different emails accounts do you currently monitor on a daily to weekly basis?
  2. How many emails total do you get on all the addresses daily?

I’m not a big user nor fan of emails, yet I frequently check 6 different email accounts (three personal accounts, one for spammy services such as e-e-commerce websites, one for serious services, one for humans; and three professional accounts) easily totalizing over 30 incoming messages daily despite a very selective methodology enforced to clean them.

From what I’ve heard discussing with friends and colleagues, I would say I’m in the low-range of the spectrum: I have plenty of colleagues that would make the numbers I gave you above look tiny. What about you?

Now that our introspective moment has passed let’s take this a step higher and have a cold look at the data.


First, let’s have a look at the high-level usage metrics to get an idea of the size of the beast:

  • 4.3 billion users (users, not account) — email is on a tie with SMS for the title of “most widespread mean of communication of all time.”
  • More than 250 billion emails sent every day: that’s 36 emails for every human on Earth sent daily or 150 000 each minute.

All right, that’s plenty! However, people don’t read their emails anymore, right? They receive too many to process them! Although an office worker receives on average 121 emails per day, we observe:

  • [USA] Average opening rate: 34.1%
  • [USA] Average click-through rate: 3.1% (=people clicking at least one link present in the email body)

The crazy part about all of this is realizing that people do read and respond to their email indeed everywhere:

  • More than 55% of the opened emails are read on a mobile device.
  • [USA] 50 % of Americans check their email while in bed
  • [USA] 42% while in the bathroom
  • [USA] and even a staggering 18% while driving

Click here to check the source of the data presented before, or if you would like to dive deeper.

So far, we’ve looked at our usage of emails as well as the protocol-level usage of it. Now you might ask yourself: where is this long-lasting dominance coming from?

Before we explore some potential explanations for the email homerun, let’s remind ourselves something fundamental yet quite often overlooked: email is still prevalent today because nobody came up with something better yet. Strangely enough, the famous quote from Churchill about democracy works quite well with email too:

Email [democracy] is the worst form of communication [government], except for all the others.


So, how to explain the spread between email dominance and the image of a dying medium? How can the reality be so far apart from what we expect?

I see two main factors contributing to the spread:

  1. The Novelty Bias: The tendency for an intervention to appear better when it is new.. We, weak humans, are prone to biases and the worst part about them is that they are insidious – we don’t realize we are affected by them. The novelty bias could explain why we’re so prone to believe a fancy new tech (Slack?) will quickly replace an old yet battle-tested one, despite what the data suggests (email isn’t going anywhere).
  2. New technologies can enhance the old ones: the email landscape of 1971 (the year of the first email) was nothing like the current one. The B2B Marketing Automation Market (which is more than just email, but still) is currently valued over $3.5 billion with a yearly growth rate close to 30%.


Thousands of tools (software and services) have been developed over the email protocol, providing all kinds of services including:

  • Email providers and clients
  • Services to find emails and refind databases
  • Email automation tools
  • Spam detection and prevention tools
  • Newsletter/Campaign manager
  • CRM using emails
  • Lessons/Training sessions teaching you how to write sale-driving emails.
  • And many others.

We now have a full ecosystem surrounding emails, providing more features while also making them easier to access (think mobile email clients for instance).

Finding data covering only email-related services is hard. The marketing automation industry is much bigger than just emails, but it can give us an overall sense of the dynamic of the email industry:

Marketing Automation Market Growth (source: EmailMonday)

Despite all the new technologies emerging since the inception of emails, such as Social Media, Search and others, the email is still king — it’s the most used marketing technology:

What types of marketing technology does your company use? (source: EmailMonday)


It’s a bit mind-blowing when you think about it this way: shiny new tech, such as Artificial Intelligence or Natural Language Processing is used to make a 50 years old technology more efficient. Some might say it would be better to scrape the old tech altogether, and they’re probably right, except for one thing: how develop a communication technology better than one which already has 4.3 billion users?

Putting the numbers aside for a minute, consider how usual asking for an email has become when you register for a new service. Web services don’t ask for your Twitter handle, your messenger name or your Telegram: since the early days of the internet and nowadays still, they ask for your email address.


As time goes by, technologies and their usages evolve. It’s doubtful that the creator of the email envisioned the current situation — the sheer domination of automated messages such as newsletters, or other automated emails coming from all the web services we use. He was probably projecting the vision of what he knew over it: good old regular (post) mails.

A similar scenario is unfolding with the SMS (=texts for our American readers). On the one hand, the P2P (Person to Person) SMS traffic is on the downtrend (Source: MMAGlobal).

On the other hand, A2P (Application to Person) SMS is booming:

Total global A2P (Application to Person = automated) SMS messages by region (2017–22) (source: MobileSquared)

The comparison between SMS and email is insightful, as both mediums are following a similar path: they started as a people to people medium and are now reaching their peak as a company to people medium. The change in their usage doesn’t make them any less prevalent, quite the opposite: machines tend to be more talkative than humans.

From what we’ve seen so far, we’re left with a flood of emails that aren’t going anywhere. Worse, it might keep increasing, so how to deal with it?


Over the years, many different apps and services have been dubbed as email killers. Among them, Slack was probably the most prominent.

Indeed, Slack’s focus on the professional setting made it a prime target for the title of email killer. It was a compelling narrative every media could get behind, and they were quick to do it.

Back in 2014, The Verge was portraying Slack as the nail in the coffin for emails: Slack is killing email.

Despite its promotional purposes, the interview includes an interesting (and verified) insights from Stewart Butterfield, Slack’s founder:

Email has gotten worse over the last 10 years or so. Ten years ago, 50 to 60 percent of email was from another person, and now it’s 8 to 10 percent. The other 90 percent is from a machine.

He fails (probably purposely because of Slack’s agenda) to see how automated email can be useful and quote trivial ones: email marketing, receipts, new Twitter followers, Facebook comments, check-ins. What about password reset emails, delivery notifications, suspicious login notices, bills, and alerts?

Now, this is where it gets funny: have we heard from The Verge on the same topic since? We did, and it was very recently. It turns out four years were enough to overturn completely the previously established diagnostic:
 Slack didn’t kill email — and it might have made it stronger

The author (Casey Newton) details common frustrations with Slack such as its immediate, always-on nature which eventually makes it even more demanding than emails it was supposed to kill. The synchronous essence of Slack concentrates the author’s criticism, but he’s interviewing the CEO of a company looking to build the “asynchronous Slack” so once again take it with a grain of salt.


The failure of a company currently valued at $5.1 billion to kill email is consequential. It demonstrates that replacing email is not a matter of raising enough money to do it: it has more to do with the mindset and approach used to unseat the king.

Vijith Assar in the NYMag sums up perfectly why Slack failed to kill the email:

That is, it will remain impossible to build a better communication system until the primary goal is actually communication itself. But, by and large, we don’t invest much in creating new open standards, specifications, and protocols around which entirely new classes of tools can be built — we’re too busy trying to sell apps! And at the end of the day, Slack is just another app.

The openness of the email protocol is what made it ubiquitous: anyone can host its server and become an email provider. Anyone can build services on top of it, without any restrictions. If an email replacement would ever arise, it won’t come from a private company looking to expand in new markets and establish a new (proprietary) communication standard.

It will be precisely the opposite: an open and welcoming protocol everybody can build on top of. Walled gardens are aesthetically pleasing, but at the end of the day, it’s not the best looking solution that becomes the standard but the most inclusive one. Wikipedia demonstrated the theory for knowledge sharing; now online communications are patiently waiting for their open and welcoming champion. Meanwhile, the email’s clock hasn’t even started ticking yet.

Originally published at gwapit.com on September 17, 2018.


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