idbloc looks good. Maybe consider a one-time price option too. Or for people on the free plan, consider allowing them to buy a one-time top-up pack of email "credits" if they use up their free 100.
Personally I have a bunch of spare email addresses from google, yahoo, and others that I created many years ago before they demanded a phone number when signing up. I just use those for website logins.
there is also theothermail.com to generate throwaway email addresses that forwards emails to your original inbox, you don't need to use your personal email address to sign up for a newsletter
we created the service theothermail.com to generate throwaway email addresses that forwards emails to your original inbox, you don't need to use your personal email address to sign up for a newsletter
Personally I have a bunch of spare email addresses from google, yahoo, and others that I created many years ago before they demanded a phone number when signing up. I just use those for website logins.