Good shout on the getting of the token! The limit of the emails was added mostly, so I can restrict my demo on grap.email, so it is less convenient for abuse.

Good shout on the getting of the token! The limit of the emails was added mostly, so I can restrict my demo on grap.email, so it is less convenient for abuse. It is a configurable system setting. As for the comparison, I mostly started this because I couldn't find a self hostable solution at the time and did not like the pricing models of existing services. They were an overkill for my needs. That being said I wouldn't say I can compete on features with any of the established solutions, they are much more sophisticated. I just needed something simple, so I coded it.