This is nice in terms of hiding your actual address. However, it makes migrating away harder because now instead of setting a simple rule to strip the + for forwarding, you need to individually map each address.
So what is it that you want? Either you want a masked email or you want an easy way to migrate away. You could still setup trashcan+randomdigits@yourdomain.com manually. Or you could setup a catchall rule for your new provider.
Unfortunately, way too many internet services don't allow the plus sign in an email address. It's weird, but it's true.
Even worse I've had front end systems accept account creation with this address format, but their backend system fails when using some integrated service. The result is 3 months after setting up the account something breaks when I try some other functionality and I have had to contact their help desk and ultimately we stumble through and realize the problem may be my email address.
There are varying level of masking. I would consider an email myusername+random@domain.com as a masked address. Of course it is trivially unmasked. But assuming I am willing to accept that, it does offer a different tradeoff with respect to convenience. It's true though that is fairly trivial to manually add +random
`sed s/[+].*@//` over the email list will get rid of enough "plus" email addresses. Better use a custom delimiter if you're relying on the + character for anything.
How hard is that though? Export all email addresses from 1Password (trivial), extract generated emails (trivial), and add forwarding rules for each one in your mail server (trivial to easy depending on your setup).
Maybe not easy for non-savvy users, but neither is a custom domain or even knowing about the + trick.
I have an extra domain attached to fastmail which I only use for junk. If you know the domain where my main email lives, you can pretty much guess a couple of aliases which will work. I want my junk mail completely separate from my useful mail
