At any time, donors and supporters can reply to a text message by texting back the word STOP and unsubscribe from all future messages. They will then be unsubscribed from all of your keywords, and if you try to upload their number in a new list it will show up as "Unsubscribed."
Each text message you send is automatically appended with the message "Text STOP to unsubscribe."
For donors who do not wish to or are unable to unsubscribe themselves, you can manually unsubscribe them from your account by selecting Communication & Marketing > Manage Lists
Click By Individual in the left and search for the subscriber you wish to edit.
Click on the Plus sign (+) by their Lists and click which list(s) they are subscribed to edit.
Find their number in the list and click on the three dots to the right of their number, then on Unsubscribe.
People can re-subscribe to receive messages from your organization at any time by texting any of your subscription (51555) keywords or entering their number into a mobile subscription form.