[chimeracoder]

> Some emails I send are sensitive, and I’d rather not forward it to a third-party service if I don’t have to. However, those sensitive emails are often important, so I need a way to remember to follow up.

I feel this pain.

Shameless plug: I wrote an open-source version of Boomerang/Followup.cc that is designed to be self-hosted, specifically because of this concern: https://github.com/ChimeraCoder/go-yo

(For the record: I like script in the original submission script, but for me, I rarely use the Gmail web interface, so I had to make something that works over IMAP).

It's still a WIP, but I've been using it myself for the "bounce-back" feature for the last several months.