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Re:Avoiding Spam with Email Aliasing by yogin on Wednesday December 18, 2013 @01:20AM (#6926181)
I have my domains hooked up with google apps (there was a time when it was free, still is if you got in early), and they allow you to have a catch-all for email addresses that you can redirect to one of your user accounts. So each time I need an email for a site, I just put <site_name>@some_domain.com.

This way there's no need for the +alias in the user part, and some site tend to block this because they know it's used for aliases.

Doing this, I know exactly where this email was used. Been doing this for years, and works great.

Re:Avoiding Spam with Email Aliasing by stormbrew on Wednesday December 18, 2013 @01:28AM (#6926206)
Have you actually encountered a site blocking + in email addresses? Because that's just categorically wrong behaviour.

My mail server (running qmail) uses - for this. Have been doing this trick for at least a decade now with it. I've never had a site complain about it.