I am pleased to read your updates, and I would say that a 20% increase in registrations is a pretty good achievement. Perhaps you should also consider applying to participate in
mit100k, I am sure this step will help in scaling. If you make it to at least the quarter finals, your project will be talked about all over the world. By the way, it was with mit100k that the history of ProtonMail began.
how about HTTPS?
Thank you for your comment and, we will consider the event.
Also the link has been changed to HTTPS.