Mailpictures is a nautilus extension in gtk/perl, designed to be a more featured nautilus-sendto alternative / replacement.

If there are data files in the selection :
Create a zip archive in case of several files
The minimal number of files for archive create can be set in the main window

If there are pictures in the selection :
Automatic resizing : 640, 800, 1024 or custom width
Keep correct EXIF orientation
Change JPEG compression
ZIP archiving of the pictures
Very fast processing (use imlib2)

In every case :
Check for the size, and show a message warning if it is too big for an email
Get rid of the main window and launch directly the email writing window, if set in main window app
Evaluate the size of the attachment
Support for Evolution, Thunderbird, Icedove, and Kmail.
Save results in a folder : can be use to resize several pictures and save somewhere
Store settings

Installation:
If your distribution is debian type, use the deb file and the package manager of your distribution
For another cases, use the tar archive and run the "install.sh" script as root in a shell.
As for all nautilus extensions, you need to restart your session or the nautilus process to have the mailpictures item in the nautilus edit menu

Locales:
English
French
Italian
German
Dutch
Note : I'm looking for translators, please leave a comment here to contribute

Mailpictures is in gtk/perl, and need :
Python nautilus : python-nautilus
Gtk2 perl library : libgtk2-perl
Glade perl library : libgtk2-gladexml-perl
Imlib2 perl library : libimage-imlib2-perl
Exiftool perl library : libimage-exiftool-perl
Filetype perl library : libfile-type-perl
Zip archive perl library : libarchive-zip-perl