Nonprofits should establish opt-in text connections with potential donors first before soliciting donations, a Sumotext executive advised at an event. It is also important to note the differences between mobile codes that can be used for fundraising and codes that can be used for marketing. "When someone gives you money, that is not an opt-in. ... If you want to remarket to them to let them know about your next fundraiser, your next meeting, your next event, you need to get an opt-in. I say lead with marketing and then have the giving be behind that," said Tim Miller, CEO of Sumotext.