What are the best Trial Expiry Emails?

Hey fam,

Last week I launched Thought Train 2, the new version of my super popular menubar app for taking notes and keeping a to-do list!

The launch went well, I almost have 900 trial signups so far, but...

I've just written my trial expiry emails (there's a 7 day trial) and I'm wondering what the best or most converting trial "Dunning" emails look like.

Have any of you had experience with what works best?