I run an email based service and while I send most email on my own I have been using the following providers for fall-back (for inbox providers that have very strict policies). - https://serversmtp.com/ - https://aws.amazon.com/ses/ I prefer SES for a number of reasons: - The price is about the best you will get. - You can DKIM sign messages yourself if you want (although IIRC they remove the ability to verify... - Source: Hacker News / about 2 years ago

Https://serversmtp.com/ It is the only one I have used, it offers both SMTP and a REST API of which I have only used REST, at $COMPANY it was valued as "the cheapest working service to send thousands of email/month from a few email address (the usual noreply@xxx.yy)". - Source: Hacker News / over 2 years ago

I use Soverin: https://soverin.net/ which lets you create multiple mailboxes on the same 3.25/month package. - Source: Hacker News / about 1 year ago

I have been using https://soverin.net. It has a privacy-first approach to email, while at the same time they are transparent in regards to its operation. They operate and are based in the Netherlands. - Source: Hacker News / almost 2 years ago

Soverin and AnonAddy are worth looking into imo. Soverin supports unlimited custom domain aliases. Source: about 2 years ago

Don’t forget the guys at https://soverin.net/ as well. Decent pricing and solid NL hosting and very private. Source: over 2 years ago