clawsker software package provides Configuration tweaker for Claws Mail, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install clawsker
clawsker is installed in your system.
Make ensure the clawsker package were installed using the commands given below,
$ sudo dpkg-query -l | grep clawsker *
You will get with clawsker package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | |
| Package | clawsker |
| Version | 1.0.0-1 |
| Description | Configuration tweaker for Claws Mail |
| Sub Section |