Deliverability

Choosing the right SMTP server provider can be overwhelming with so many options available. In this comprehensive guide, we dive deep into the features, ease of use, security, deliverability, and scalability of top SMTP server providers like Mailtrap, SendGrid, Amazon SES, Postmark, and, of course, Sinch Mailgun. Whether you're a developer testing emails or managing large-scale email programs, find out which provider is best for you.

If you find that either your domain name or IP address is on an email blocklist, it’s easy to freak out. You certainly wouldn’t be alone if you did. The term "email blocklist" was...

Bulk senders have had a lot of questions around what implementing a one-click unsubscribe process means since the requirement was announced by Gmail and Yahoo...

When it comes to email delivery, not all SMTP ports are created equal. While port 25 might be the oldest port in the book, and port 465 had its moment in the sun, it's port 587 that...

It's frustrating as an email sender when your messages don’t get through. Especially if you don't know why it's happening. In this article, we’ll dig into why Gmail may be blocking...

Email deliverability sometimes feels like a mirage. Your messages go on a long journey from your mail server to your subscribers’ inboxes. But it’s the last part of that journey that...

Email authentication lets mailbox providers know that you’re a trusted sender – that you are who you say you are. As a Technical Account Manager at Mailgun, I’m constantly...

We’ve talked a lot about email bounces and email bounce rates as a whole in the past before, but we’ve really only ever dipped our toes into the different types of bounces...

Remember relay races in school? Just as runners pass along a baton, an SMTP relay passes along an email from one server to another. Sinch Mailgun’s free SMTP relay...

The moment Vesper Lynd slinks onto the screen in Casino Royale, you know exactly how this will all play out. Despite being a world-class spy, James Bond will fall hard for the...