Version 1.1.0 of package Notmuch-Indicator has just been released in GNU ELPA. You can now find it in M-x list-packages RET.
Notmuch-Indicator describes itself as: ======================================================== Display mode line indicator with notmuch-count(1) output ======================================================== More at https://elpa.gnu.org/packages/notmuch-indicator.html ## Summary: ## notmuch-indicator for GNU Emacs This is a simple package that renders an indicator with an email count of the `notmuch` index on the Emacs mode line. The underlying mechanism is that of `notmuch-count(1)`, which is used to find the number of items that match the given search terms. In practice, the user can define one or more searches and display their counters. These form a string which realistically is like: `@50 😱1000 💕0` for unread messages, bills, and love letters, respectively. ## Recent NEWS: [Not available 🙁]