The values of the automatically generated UTM tags are as follows:
UTM Source
This is always “email
UTM medium
This value depends on the type of e-mail.
For template emails it is “marketing-automation”.
For segment emails it reads “newsletter” followed by a comma separated list of all used segments.
UTM Campaign
Corresponds to the alias of the e-mail category with the prefix “aivie”.
UTM content
The internal name of the sent e-mail.