I tweaked a basic follow-up email for my running group and it worked wonders
At my IT job, I have a standard email for checking in with people after we fix their issue. I thought, why not use something similar for my running club? When I needed to confirm who was coming to a weekend jog, I copied the format but made it friendlier. I start with a quick hello, mention the time and place, then ask for a reply if they can make it. It's so much faster than typing new emails each time. Now I use it for any casual group where I need a head count. It keeps things organized without feeling like work.