Parcimonie's author is also the maintainer of the package in Debian [1], apt checks PGP signatures on packages so you could trust that. I'll contact the author

Parcimonie's author is also the maintainer of the package in Debian [1], apt checks PGP signatures on packages so you could trust that. I'll contact the author about the SSL issue. [1]: https://packages.debian.org/stretch/parcimonie https://packages.debian.org/stretch/parcimonie