Also, what are the limitations of the free plan, and how many MBs do we get with it? Also since that you do not ask for KYC, anyone can make unlimited accounts on your site ? Is there any check and balance on that.
It would be insane for an email service to ask for a KYC. Mailboxes don't ask for this type of information, and it's only the email marketing programs such as SendGrid that want to know your address because of the CANSPAM act.