VMTA stands for Virtual Mail Transport Agent. In a nutshell, a mail transport agent is (or mail server) is a software tool that forwards incoming email from senders for further delivery. VMTAs are email servers that assign different IP addresses to particular types of emails, e.g. transactional or promotional. Consistent sending patterns and cadence will help make sure your messages are going to their inbox rather than Spam or Junk folders.
You can apply a VMTA for a query or database used as the contact source for your program:
- The organization's default VMTA is used if no other VMTA is assigned to the parent database or the query.
- If a VMTA is specified at the query level and that query is the contact source for the program, all emails sent from the program will use this VMTA.
- If a query is the contact source of the program and a VMTA is specified for its parent database, the program mailings are sent from thisVMTA.
If the VMTA assignment is changed on an existing program, the program will automatically update the sends to use the new VMTA after midnight, for the next day's sends.
For more information about VMTA setup, see VMTA servers.