You need to wait to get validated though, but that seems like a good thing once you’ve done it.
ZeptoMail: "It'll take a few days to get validated." (Paraphrasing.)
Also ZeptoMail: Sends me a message overnight saying I'm verified.
And it's pretty easy. I simply listed the uses for transactional mail (password resets, forum notifications, registrations, etc.) and included a screenshot of a test post received in email to show the "template." That was the extent of it. Amazon SES wanted that and lengthy explanations for everything. A royal pain...but I also understand why they do that, as they want to preserve their email reputation to maintain a high level of delivery (which won't be flagged as spam, phishing, etc.).
When I had SES running, I never had issues with it--all members got all the email we sent. It's just that their
backend was a pain point. There are just too many services, too many ways to get lost, in their interface. Regular corporate I.T. users I'm sure know it inside and out, as they use AWS daily. But for those of us who access it once every year or two, their interface changes so much, and their offerings grow, which makes it nearly impossible to navigate.
Back to Zepto. From what I can tell, my first 10,000 credits are free, as mail is delivering nicely and I haven't yet entered payment information.
Emails were taking hours to arrive, but what I think was happening was that there was unsent mail in XF's queue and it's catching up with the backlog. After that clears, mail should deliver within a minute or two.