An error occurred while saving the commentjgg commented
First of all thank you for your comments and taking into consideration my proposal.
Please think that not all SETLIST.FM users are also GMAIL users, as it is my case.
And, even in GMAIL, in the "Setlist updated" thread there would be a mix of all the updates of all your artists.
Maybe, it would be better to title e-mail notifications with "[ARTIST] setlist activity", so in that case you would have a thread per ARTIST.