I have an LG enV3 with $1.99/MB pay-as-you-go data plan (i.e. basically no data plan if I don't use). How much does it cost me if I send a message to an email address by composing a text or picture message?
Texts count against your text package; you shouldn't be charged for data for sending/receiving texts. If you don't have a text package, texts are 20 cents each and picture/multimedia texts are 25 cents each (charged when sending/receiving).