You might be interested in https://github.com/zedshaw/lamson
It's super old (died when python 2 was still the king) but probably more suited for making programmatic mail applications
There is an active lamson fork https://github.com/moggers87/salmon that retains the original GPL license and supports current Python 2.x and 3.x versions.
Difficult to search for, so I'll ask on the chance that you know: I see .vel files in that repository. Do you know anything about what language or format that is?
jfkw|6 years ago
datashaman|6 years ago
shuzchen|6 years ago
cbsks|6 years ago
https://github.com/zedshaw/vellum