We create message records both manually in NetSuite and via an integration. For some reason only the message records manually created are showing in my sales activity report. I can't figure out what is different about the 2 types of message records.

You message records created via integration probably aren't triggering scripts and workflows

I don’t think so. Here are some newly discovered details. It’s seemingly only message records where the author is not an employee.

Then it wouldn't be sales activity?

Okay thanks