In Tithe.ly People it is very simple to send an SMS or Email Blast to a Group. To accomplish this, simply follow these steps:
1) First go to People and then navigate to Groups in the left sidebar.
2) Click on the Group that you would like to send the blast.
3) You have two options for sending a Blast to a Group:
SMS: If you would like to send an SMS, click on the green chat bubble with the "message" label.
Email: If you would like to send an email, click on the green envelope with the "email" label.
4) That link will take you to Messaging: Create Blast and you can proceed from there as you would send a standard Blast in Messaging. Note: The Group you are sending the Blast to will be pre-selected in the "Select recipients" area.