How to set up an email campaign?

Question

Email

At the moment I have my own website on VDS and use sstmp to send letters and send via Yandex Mail via SMTP, but due to their restrictions on the number of letters, at the end of the day, not all users receive letters.
Interested in how to properly and competently organize the raising of your SMTP server so that you can send letters and they do not fall into spam and reach exactly, please tell me where to find such information or an article where all this from 0 can be read and implemented. Well, or tell me the services that can provide a free SMTP server without strict restrictions.

Answer 1

sendpulse.com, but for example.