HTML formatting in automessage

Just activated Automessage and beginning to test it out. Am also using newsletter and wpmandrill, so I'm wondering if one of those is affecting the formatting in some way.

While it's super easy to add BR tags to my automessages, one issue I'm having is with the unsubscribe link at the bottom. (See attachment.)

As you can see, the "----- To stop receiving messages..." wraps up to the previous line.

Any suggestions for fixing this without enabling BR tags in the Mandrill plugin? (That was my only guess.)