Forum Moderators: rogerd
I DO think you are exposing yourself to major abuse issues by offering such capability. Spammers, harassers, etc. could work from your domain and end up putting the whole thing on blacklists. If you do go ahead with the plan, I'd recommend putting limits on the mail volume and monitoring activity closely to shut down problem accounts before they wreak too much havoc.
Furthermore, users will unlikely use your domain unless you are a big company like Yahoo.
Just think about yourself for one second. Which one will you give to your friend - an email with Yahoo or an email sign up with a web site started by an individual who could cancel his site anytime soon?
Also please beware that this type of email account might interest those Nigerian scammers who sign up with you to scam others. They also can use it to spam others and give your web site or company a bad name.
Anyway, I don't mean to discourage you. I just hope you have considered the advantages and disadvantages and also the consequences of giving free email account. Have you tried Ubiemail? I use this for my personal email. If you want users to sign up by themselves then I think you need to do some tweaking with the source code. Good luck with your endeavours.
And there's a probability of "adverse selection", i.e., some portion of the people who DO sign up will do so because they want to do something that they don't think they'll get away with at other providers.