nShift Ship On-premises uses SMTP when sending emails using the Mailback feature, and to send EDI files to carriers who receive data via email.

SMTP settings can be configured at any level in the setup tree:

1. Go to Setup and navigate to the level where you want to configure your SMTP settings. Configure the settings on the installation level if all locations and carriers should use the same settings. 
   
   
2. Right-click in the pane to the right and select New > SMTP settings.
   
   
   
   
3.  Fill in SMTP server and port. Enter Account name and Password if your server requires authentication.
   
   
   
   
4. Use the Test connection button to verify that nShift On-premises can connect to the server. The timeout field is only used for the test. 
   
   
5. Click OK to save.

Note: You need your own SMTP server to use any of the services mentioned above. If you are using Office365 as SMTP in Ship On-premises, you have to set the sender email in Mailback, Alert Systems, etc. to use the same sender email as set in the SMTP settings.