No one likes to get called out by the teacher!! If you practice to message customers on late tasks within 1-3 days of a task becoming overdue, you increase the chances of on time task completion for all future tasks because your customer realizes you’re keeping a close eye! But don’t spam the resend button 
. Leave a note first and then hit resend and give them the opportunity to act. Rinse and repeat for future late tasks. Check out Best Practices below!
