Add method for sending warning emails before cancelation

Albert Volkman → made their first commit to this issue’s fork.

Reviewed and tested and functionality works as expected. Ready for maintainer to review.

I need to review and test this. Sorry for the delay. I plan on looking at this next weekend.

Thanks

Thank you all for working on this and getting it across the finish line.

Automatically closed - issue fixed for 2 weeks with no activity.