Email Files Thunderbird extended -
Email Files Thunderbird extended adds a service menu to send files with thunderbird (std).
+ send normal
+ send and resize images
It will automatically resize images bigger than $maxImgSize (std:500000b) by factor $resizefactor (std:50%) and show a notification if resized.
libnotify should be installed, but you may also alter lines 46-49 (EmailWithThunderbirdResizeLargeImages.sh) to use boring kdialog popups.
Tested on my gentoo sys, works properly.
Use at own risk, i'll not be reponsible for any possible data-loss or system damages.