Even with the best Mass Text Messaging Service, your text messages will not reach your people if your phone numbers are not valid. For example: landlines which are not text-enabled or VOIP numbers. That’s why PastorsLine has a phone number lookup feature to reduce the number of invalid (landline, incorrect, etc.) numbers used. Check out more SMS best practice tips in the link. https://pastorsline.com/bulk-text-messaging-for-churches-best-practices/