[rsync]

"But you know what really happened? I wound up with hard to remember email logins and caught less than a handful of services sharing my email address without my permission."

Can you elaborate ? I have been meaning to set up just such a mechanism as it has always seemed like a good idea ...

It seems like "[e-mail]" would be very easy to remember and associate with the site (rsync.net, in this example) ...

[joosters]

I've been using the same system with my own domain for several years now, and unlike the OP, I've seen many unique emails get on to spammer lists. My blocklist of emails has got quite long!

As you say, using a password manager, or just picking a [e-mail] style of email, means remembering the email addresses is pretty easy. n.b. you may need to also set up your email client to let you send emails with a customisable address too.

Spammers who send stuff to [e-mail] can be mostly blocked because these tend to have a messy jumble of text and numbers - I use a simple regex to throw away these kind of spams. I use procmail to do the blocking, but I'm sure there are many other tools that would work just as well.

[AlecSchueler]

Not sure what he meant, but that's the system I use and I've never forgotten a login yet.