I’ve got Addy.io Lite and love it! For me, I use the aliases on multiple websites but I only need the aliases for a short time. Having 50 aliases is perfect. I create an alias, then I enter a date and info on the web site to delete the alias when I’m done such as (May 28, 2025) https:\www.98rock.com in the edit field. This is personal info to myself when to delete the alias and where did I use the alias address.
Now the good part. As you delete the alias, you get another alias you can create as long as it’s no more than 50. So if you created 50 aliases then delete 7, you then can create 7 new aliases. I’m constantly creating and deleting aliases so having a limit of 50 is more than enough for me since I truley never reach that limit.
Now for subdomains. Aliases as stated above gives you more privacy since the domain is used by many others. There are rare times when I come across a web site that doesn’t accept a regular alias. That’s when I create my own subdomain alias like jkati7iy@JoeSmith.addymail.com or wpooiuv9@theinternetrules.addymail.com which is always accepted at these web sites. I believe you can create a total of 5 of these aliases which you can create and delete as many times as you want as long as it’s within the total of 5. The downside is these aliases are trackable since they are unique.
Now the fun stuff. If you use Proton Mail or create your own PGP key, you can use the public key on Addy.io. So every time you create an alias, the incoming email to that alias gets encrypted then delivered to your actual email address. No one can read it, not even your email provider. Only you can read it and until you do read it, the email stays encrypted at rest in you email providers inbox.