I own a custom domain for my main email provider so if I switch to a new one I won’t have to change all my address for contacting people. I am considering buy a separate domain for just my email forwarding service.
What do people on here do?
Current Setup:
domain1.com - for main email
alias.domain1.com - for email forwarding with Addy.io
Option:
domain1.com - for main email
domain2.com - for email forwarding with Addy.io


I don’t think that there is a need for that 🤔
I haven’t used Addy so I don’t know specific details, but I guess you could forward the emails to addresses with a prefix, e.g.
addy-site1@domain.com addy-site2@domain.comYou can then just use sieve filters to categorise them in the folders you’d like:
Inbox Sent Addy - Site1 - Site2The only reason I’ve been thinking that you would need a separate domain, is if you are self-hosting a service like Addy: if websites realize that your domain is used for “random” addresses, your main domain might end up in a blacklist as a spam precaution (whereas with a dedicated forwarding domain, only the forwarded emails would be at risk)