[willy__]

Yes, exactly! Marketing emails are a whole other story. I was planning on mailjet - thoughts?

[mfld]

Using it for both transactional and marketing emails (but "only" for thousands of recipients) for some years. Could need some polish IMO, but the core offering is solid. Support is helpful, too.

[mcbetz]

Have been using it for transactional mails, that was okay. Have not tried it for non-transactional, esp. not in 20+ mio/months.