Little trick: You can also randomly insert dots in your email address, a bit more stealth and compatible with more sites :)

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pirates 3 days ago | parent | next [-]

This has worked for me for nearly 20 years (when I made the account I didn’t know that the dots are ignored). The only time it’s been a problem was with one company whose system stripped the dots out.

You need to send them an email to cancel. When I tried they said “you need to cancel from the same email you signed up with.” :/

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tomrod 3 days ago | parent | prev [-]

This can become unmanageable if you sign up for more than a few things.

	▲	rationalist 3 days ago \| parent [-]
		2^(username characters - 1) possibilities, but I would hate to try and keep track of which combinations I've used, or what binary sequence I'm up to. I like using company initials & random numbers @ my domain .tld