eldav software package provides interface to the WebDAV servers for Emacs., 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 eldav
eldav is installed in your system.
Make ensure the eldav package were installed using the commands given below,
$ sudo dpkg-query -l | grep eldav *
You will get with eldav package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Network |
| Package | eldav |
| Version | 0.8.1-7 |
| Description | interface to the WebDAV servers for Emacs. |
| Sub Section | Net |