Warming Up Right: A Deep-Dive Guide from Amazon SES

Looking to migrate your email traffic to a new ESP? Or maybe you're just trying to get serious about domain and IP warming for the first time? Either way, this new warming guide from Amazon's Tyler Holmes is one of the best things I've read on the topic lately.

Tyler walks you through what warming really is, why it's necessary, and (most helpfully) how to actually do it, complete with volume ramp-up tables, risk mitigation strategies, and reminders that warming isn't a one-and-done process. He explains how mailbox providers judge new sending identities, what can go wrong if you rush it, and what success looks like over time. He even does the math for you, laying out specific volume limits all the way from day one onward.

If you're using Amazon's SES platform to send email today (or planning to do so in the future), then this guide is definitely aimed squarely at you. However, this is solid, broadly applicable guidance whether you're sending mail through Amazon, Mailgun, SparkPost, SendGrid, or your own MTA.

Give it a read (and bookmark it): Guide to IP and domain warming and migrating to Amazon SES