What is the simplest and most reliable SMTP server to choose for sending notifications from the site?

Question

SMTP

Until recently, I used the service from Yandex, but there are always troubles with the settings.
I thought about finding an alternative. What do you advise?

Answer 1

https://www.mailgun.com/
I use it on several combat projects, there were no problems.

Answer 2

I work as a developer in a large company, and it so happened that over a fairly long period of time we changed mailing services for various reasons, settled on sendgrid.com , and this is the best option. We have been working with them for a year now using the API + all letters are stored with them, but they also support SMTP. You can store letters with them both for mailing lists (the user can unsubscribe from them) and for notifications. I can also advise SparkPost , but with it everything is more complicated and more expensive