Learn the ABCs of ISPs

A key to deliverability success is complying with ISPs. But with the email landscape constantly changing, it can be hard to keep up with the latest best practices. At SendGrid, we communicate with ISPs to help stay on top of these changes. In addition, we’ve compiled the top strategies, tools, and tactics for you to gain acceptance by ISPs in our guide, The ABCs of the ISPs.

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What's inside the Guide?

The difference between IP and domain reputation

"We're now enjoying email delivery rates of 96% and have saved thousands of dollars in engineering resources."

Jon Hoffman
Head of Infrastructure at foursquare

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Engagement metrics definitions

What ISPs have feedback loops

A breakdown of specific deliverability tips by ISP