This document summarizes benchmarks for nonprofit organizations using text messaging. It finds that the average list growth rate for mobile numbers is 49.5% annually, while the average churn rate is 30.7%. The average unsubscribe rate for text messages is 0.69%. Fundraising and advocacy text messages had higher response rates than emails, with advocacy texts seeing a 4.7% response rate. The document outlines best practices for different types of outbound text messages and notes that 73-87% of text subscribers could be matched to email lists.