Amazon SES is not a good choice for sending critical email notifications. Their 'global suppression list' [1] has caused no end of headaches for me and my clients.
If you and I are both using SES to send to the same person, and my message results in a hard bounce, then your messages to that person will start to silently fail.
If you and I are both using SES to send to the same person, and my message results in a hard bounce, then your messages to that person will start to silently fail.
[1] https://docs.aws.amazon.com/ses/latest/dg/sending-email-glob...