AWS allows you to switch mail servers to a specific address range which, as far as I know, are treated nicer than the regular address space.
Please provide citations if you’re going to speak so factually.
Please provide citations if you’re going to speak so factually.
That's fair. I don't really have handy citations. I just know this stuff from working in email deliverability for a long time. I guess you can choose to believe me or not.