Userscripts.org

If you're on a laptop with a small screen and need all the extra space you can get, you can remove the right column entirely by adding these three lines to the script.

// hiding right col altogether
GM_addStyle(".Bu { display:none; }");
GM_addStyle(".Bu:first-child { display:block; }");
GM_addStyle(".Bu .hx { padding-right:0; }");

Thanks so much for making a script that's so concise, and uses functions native to gmail! Very smart!

Thanks for the addition! This is the smallest script I've seen that removes the gmail ads AND regains the space.