TLDR
Every email you send or received is delivered through an IP address. Internet Service Providers use the IP address to figure out if they should deliver your email to your inbox based on the sending reputation you have. If you have developed a good reputation, your email is much more likely to be delivered. The majority of senders begin on a shared IP and they make the move to a dedicated IP after their email program has matured and grown. The Dedicated IP addresses offer more than 100k emails each year.via the TL;DR App
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