Hi @DavidLuceroSigcho,

I’ll recommend using Postfix with Dovecot. Postfix is a popular open-source Mail Transfer Agent (MTA) that can be used to route and deliver email on a Linux system. It is estimated that around 25% of public mail servers on the internet run Postfix.

Luckily, DigitalOcean do have such a tutorial in their knowledgebase.

Note that the goal of this tutorial is to help you get Postfix up and running quickly with only some bare-bones email functionality. You won’t have a full featured email server by the end of this guide, but you will have some of the foundational components of such a setup to help you get started.

https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-on-ubuntu-20-04#prerequisites

It’s not needed to create a new droplet, you just need to configure Postfix on it and you are good to go. In regards to DNS, all you need to do is point your MX record to your droplet.

Regards,
KFSys

Hello there, @DavidLuceroSigcho

I will also recommend you to use Postfix. If you want to use it with Gmail you can also check this question in our community and the answer I’ve posted in it as well:

https://www.digitalocean.com/community/questions/using-gmail-with-postfix-smtp-server?answer=60074

Hope that this helps!
Regards,
Alex