In Ubuntu 12.04 LTS I used Popper as e-mail checker.

It supports POP/POP3 and IMAP without and with SSL.

Has Thunderbird integration.

and integrates into indicator-messages:

• - no new e-mails
• - got new e-mails
  

Is it possible to make Popper mail notification working on Ubuntu 16.04 and 18.04 (MATE and Unity)?

1 Answer

Yes, it is possible. The result will look like as in screenshot from Ubuntu MATE 18.04 LTS:

Ubuntu 16.04 LTS (running MATE or Unity)

See comment on bug 1683516.

You can do the following:

sudo apt-get install libindicate-gtk3 libindicate5 python-indicate \
python-gnomekeyring python-notify
cd ~/Downloads
wget
sudo dpkg -i python-support_1.0.14ubuntu2_all.deb
wget
sudo dpkg -i popper_0.31.3-0ubuntu1_all.deb
wget --print-architecture`.deb
sudo dpkg -i libindicator-messages-status-provider1_0.6.0-0ubuntu2_`dpkg --print-architecture`.deb
wget --print-architecture`.deb
sudo dpkg -i indicator-messages_0.6.0-0ubuntu2_`dpkg --print-architecture`.deb
wget --print-architecture`.deb
sudo dpkg -i indicator-messages-gtk2_0.6.0-0ubuntu2_`dpkg --print-architecture`.deb

Then for MATE - mate-tweak -> Panel (Interface) -> Enable indicators.

Then Applications -> Internet -> Popper - set account settings.

Then pin installed packages:

cat <<EOF | sudo tee /etc/apt/preferences.d/pin-indicators
Package: indicator-messages
Pin: version 0.6.0-0ubuntu2
Pin-Priority: 1337
Package: indicator-messages-gtk2
Pin: version 0.6.0-0ubuntu2
Pin-Priority: 1337
Package: libindicator-messages-status-provider1
Pin: version 0.6.0-0ubuntu2
Pin-Priority: 1337
Package: popper
Pin: version 0.31.3-0ubuntu1
Pin-Priority: 1337
Package: python-support
Pin: version 1.0.14ubuntu2
Pin-Priority: 1337
EOF

Reboot and login back.
That is all. You got indicator-messages working again.

Ubuntu 18.04 LTS (running MATE or Unity)

You can do the following:

sudo apt-get install libindicate-gtk3 libindicate5 python-indicate \
python-notify libpango1.0-0
cd ~/Downloads
wget
wget
wget --print-architecture`.deb
wget --print-architecture`.deb
wget --print-architecture`.deb
wget --print-architecture`.deb
wget --print-architecture`.deb
sudo apt-get install ./*.deb

Then Applications -> Internet -> Popper - set account settings.

Then pin installed packages:

cat <<EOF | sudo tee /etc/apt/preferences.d/pin-indicators
Package: indicator-messages
Pin: version 0.6.0-0ubuntu2
Pin-Priority: 1337
Package: indicator-messages-gtk2
Pin: version 0.6.0-0ubuntu2
Pin-Priority: 1337
Package: libindicator-messages-status-provider1
Pin: version 0.6.0-0ubuntu2
Pin-Priority: 1337
Package: popper
Pin: version 0.31.3-0ubuntu1
Pin-Priority: 1337
Package: python-gnomekeyring
Pin: version 2.32.0+dfsg-3
Pin-Priority: 1337
Package: python-support
Pin: version 1.0.14ubuntu2
Pin-Priority: 1337
EOF

Reboot and login back.
That is all. You got indicator-messages working again.

Ubuntu MATE 20.04 LTS

Popper is installable with some hacks, but does not work anymore.