Dear <insert band name here>
The fact you emailed me me once and offered me a gig does not mean that I am a fan of your band. Even if I did write a half-hearted response to your request where I was midly pleasant in order to not be rude, and did wished you luck with getting gigs elsewhere, it did not make me a fan of your band.
So what the fuck am I doing on your mailing list? I am sick of being excited to have an email and then disappointed to find it's some band I can barely even remember telling me they're playing in a cupboard in a pub in Cockfosters on Tuesday week.
Please remove me forthwith and refrain from adding me to your mailing lists in the future.