At Bible-byte.com we use a service called Expert Texting.
A few routine/repeat messages the preacher likes to send include:
Sunday about 9:45am
@firstname,
Sunday morning auditorium service at 11am, Live Stream =
https://ganttstreetbaptist.org/live.aspx
Sunday about 5:00pm
@firstname,
Sunday evening auditorium service at 6pm, Live Stream =
https://ganttstreetbaptist.org/live.aspx
Wednesday about 6:00pm
@firstname,
Wednesday evening auditorium service at 7pm, Live Stream =
https://ganttstreetbaptist.org/live.aspx