Mask your email services are very handy - here's two you might not have tried both Open Source
Anonymous Email Forwarding
Protect your real email address using email aliases using Addy
https://github.com/anonaddy/anonaddy
Addy is awesome price wise for free you get
Unlimited Standard Aliases
10 Active Shared Domain Aliases
1 Recipient (real email address)
2 Available Alias Domains
10MB Monthly Bandwidth Limit
Then more features if you pay
@corlin yeah simple-login 👍 is powered by proton
Although you can use it with other email services beside protonmail & has an iOS app also which I forgot to mention - even the 10 aliases with free version is good if your using them just for one off sign-ups to get access to some sites then deleting the account and that alias keeps you within the 10 limit - handy indeed