Address completion

Vim

vim-notmuch-address can be used to get address completion for the vim editor.

If you use mucomplete, the following settings should give you automatic completion:

au FileType mail setlocal completeopt=menuone,noselect,noinsert
let g:mucomplete#chains.mail = [ 'user', 'ulti' ]

Emacs

Since notmuch 0.22, you can also have address completion directly in emacs (press Tab on the "To:" line) when editing an email in notmuch-message-mode.

Sublime Text

sublime-notmuch-address copying the vim version above to work in Sublime Text 3.