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Thank you for the kind words :) Most people don't hit the bandwidth limit unless they're really using 33mail a lot. I've been using 33mail heavily for a decade and my monthly usage is 40MB which puts me in the premium tier, but I'm near the top percentile of bandwidth usage. The premium tier also has a lot of other benefits, like custom domains and anonymous replies - so lots of users upgrade to it without being clos…
Cool, thanks I signed up and set up a custom domain so hopefully I won't get caught by the disposable email blacklist that other commenters were talking about. the only other issue I'm seeing is that the website isn't really great on mobile, my wife mostly does stuff on her phone (despite us having like 10 computers lol) and that might be a small barrier, though after sending a test email I see that it can be managed…
However, you are correct that most of our users rarely need to login to our website after initial sign up.