Where can I find a mail service for the site?

Question

Mail for domain

Hello. Please tell me a good, paid, outgoing and possibly incoming mail service.
Now I use one foreign service, everything suits me, except for the policy, which I sometimes violate.
The bottom line is, if, for example, you get 8% of hard bounces, and these are literally 16 letters that competitors do themselves, then they open your account, they say, clean your database.
But this is not realistic, despite the complex captcha at the registration stage.
A competitor enters the forum, registers an account for a non-existent mail, while passing the captcha, and this is already considered a "Rejection" for me.
15-20 times, and they open the account, and all other users suffer.
We need a service that is not so cruel to such situations.
I have 5 domains, and one account, the daily limit for sent mail is 20k letters.
And given this amount, 20 bounces and all domains suffer.
Heard about amazon, but it is difficult to set up as for me.
Can anyone advise something normal, you can Russian or foreign services.

Answer 1

Amazon ses, mailgun, sendpulse