How to send system messages to users
 

I want to send system messages to our users using SMTP server


1. In ISPmanager how can I create a mailbox something like this noreply@example.com and gain access via smtp?
2. What is the port number and encryption?
3. Does your panel provide options that users can use to unsubscribe from notifications?

1. Yes, you simply need to create a required mailbox in the control panel.
Also please refer to this article.

2. Without encryption port 25 or STARTTLS port 25, TLS port 465. These are standard ports for mail services.
3. No, the control panel only creates a mailbox, it doesn't send anything.