There are actual reasons to self host that aren’t discussed here.
1) BEC filters. I run mail servers for several mid size companies that I am part owner of. We are constantly inundated by BEC scammers. But I now have filter lists that block it. You can’t email my staff using any manager or boss’s name and a e-mail that doesn’t match. It basically shuts down the whole BEC scam. I have one business still on Google apps, and we have now had two employees in that business get fooled by the scammers.
2) speed. Amazon AWS SES is great until you want to send 150,000 emails a day. At this point you’re running into issues with network transfer speeds for each request taking too much time, causing the full outbound send to take too long to complete.
1) BEC filters. I run mail servers for several mid size companies that I am part owner of. We are constantly inundated by BEC scammers. But I now have filter lists that block it. You can’t email my staff using any manager or boss’s name and a e-mail that doesn’t match. It basically shuts down the whole BEC scam. I have one business still on Google apps, and we have now had two employees in that business get fooled by the scammers.
2) speed. Amazon AWS SES is great until you want to send 150,000 emails a day. At this point you’re running into issues with network transfer speeds for each request taking too much time, causing the full outbound send to take too long to complete.