We all know that the default courier client in Gnome es Empathy, so the integration with Gnome Shell It's great to spare, but the same is not the case with Pidgin that for me, it is much better.
Luckily there is an extension that allows us to correct this, in addition to having the notifications as with Empathy being able to respond instantly to any incoming message.
We open a terminal and put the following:
$ wget -c https://blog.desdelinux.net/wp-content/uploads/2012/02/Integracion_Pidgin.tar.gz
$ tar -xzvf Integracion_Pidgin.tar.gz
$ cd Integracion_Pidgin/gnome-shell/extensions
$ cp -R firstname.lastname@example.org/ ~/.local/share/gnome-shell/extensions/
Later we restart Gnome-Shell. We press the combination Alt + F2, we wrote «R» without the quotes and we give enter. We only have to activate the extension through Gnome-Tweak-Tool.