> keep the new branches but not make them overwrite existing ones, but then people could store porn or whatever for free on your server and have it be served to others
When your program sends the mail, do you use any external services for that (GMail, etc) or do you run a local SMTP server? How about the receiving address, is that one self-hosted or powered by a third-party?
I deliver and read mail locally. I don't think that matters a whole lot in this case, though? As long as you can send email from your server to yourself somehow, I guess you're fine.
Mainly thinking because if you use a third-party you could potentially trigger some spam metric if someone were to submit PRs full of spam, and thereby getting your domain landed on some blacklist which in turn would make more of the real mail you yourself send at risk of getting trapped in spam.
So using a local-only / fully self-hosted mail delivery solution is definitely the best way to do it IMO.
> keep the new branches but not make them overwrite existing ones, but then people could store porn or whatever for free on your server and have it be served to others
When your program sends the mail, do you use any external services for that (GMail, etc) or do you run a local SMTP server? How about the receiving address, is that one self-hosted or powered by a third-party?