This fix takes a little bit of patience and hacking skills, but here it is. 

 

1. You will need to download the patch file:

Go to:

http://sourceforge.net/p/checkgmail/bugs/105/

click on Attached File ( 1 )

checkgmail.patch

click on download

2.  Run as superuser in a terminal:

$ sudo -s

Copy /usr/bin/checkgmail in the folder containing checkgmail.patch

Example:

$ cp /usr/bin/checkgmail /home/YOUR HOME FOLDER/Downloads

Change directories to the folder containing checkgmail.patch and checkgmail

Example:

$ cd /home/YOUR HOME FOLDER/Downloads

Run the patch: 

$ patch checkgmail checkgmail.patch

(Hit Yes, Enter y)

 

3.  Open checkgmail with some text editor

$ sudo pluma checkgmail

with the replace function replace every occurency of 

"https://www.google.com/accounts/"

with:

"https://accounts.google.com/"

It should give 3 occurencies.

Change the old text with the new all 3 times.

 

4.  Save the file and copy the file back (overwrite) to its original folder:

$ cp /home/YOUR HOME FOLDER/Downloads/checkgmail /usr/bin/checkgmail

 

Done!   With a new version that finally runs.