The first time you give the process looks like this...

Text your gift to [email protected]
10 means you'll giving $10.00

You'll then get a text or back with a link to follow and complete the transaction.

Complete the payment form just like on any other site. Setup a password so next time you don't have to do this all again.

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All future giving is quick and easy...

Text your gift to [email protected]
10 means you'll giving $10.00

You'll receive a confirmation text. 
Reply with "Y" if the amount is correct.

All done! You'll get a confirmation number.