[1]: http://www.mutt.org/
-[2]: http://notmuchmail.org/
-[3]: http://upsilon.cc/~zack/blog/posts/2011/01/how_to_use_Notmuch_with_Mutt/
+[2]: https://notmuchmail.org/
+[3]: https://upsilon.cc/~zack/blog/posts/2011/01/how_to_use_Notmuch_with_Mutt/
Requirements
notmuch-mutt is released under the terms of the GNU General Public License
(GPL), version 3 or above. A copy of the license is available online at
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.