Allow to monetize WhatsApp/Email/SMS Integration

Basically everything that isn’t Web can’t be monetized which is unfortunate that some people might prefer those methods (especially WhatsApp) much better.

For Email it should be relatively easy since you already have the users’ email addresses. Sure, it can forged but you can check if at least one of SPF/DKIM/DMARC passed.

As for WhatsApp and SMS, you can ask users to fill in their phone number and then you should be all set.