Does anyone know of a reference list for sending from SMS to email on various carriers/platforms? There are all kinds of resources for sending email to SMS (generally involving sending it to (phone number)@(carrier address.com)), but I haven't been able to find a cross-carrier reference for going the other way.

On my T-Mobile service, for instance, I have to send an SMS to "phone number" 500, with the email address, subject, and body of the message separated by appropriate delimiters. How does it work on other carriers?