I'm exploring whether I can create an enterprise-only email service similar to Gmail or Outlook using only AWS resources. My reasoning is that since it's limited to enterprises, there should be more control over user sign-ups, manageable organizational structures, and a significant amount of internal email traffic. I haven't worked much with email services on AWS, but I have a few concerns:
- Getting out of the SES sandbox seems tricky. Are user-initiated emails categorized as transactional? Can SES handle this?
- I've noticed port 25 is blocked or throttled on AWS's compute services.
- WorkMail appears to be suitable but costs $4 per user monthly, which adds up.
Do you think setting this up is achievable? Has anyone successfully done it? If so, what approach did you take?
1 Answer
Totally possible! If you're looking to operate your own service, remember to bring your own IPs and communicate with AWS support. It should work if you play by their rules, though I haven't personally tried it out.

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