> ## Documentation Index
> Fetch the complete documentation index at: https://docs.joinmassive.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What ports are available for email services?

For email-related traffic, the following ports are available with prior approval:

* Port 587: SMTP with STARTTLS
* Port 465: SMTP over SSL/TLS

**Note:** Port 25 is blocked to prevent spam and abuse.