Version 1.1.11 of package Mastodon has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Mastodon describes itself as: ==================================================== Client for fediverse services using the Mastodon API ==================================================== More at https://elpa.nongnu.org/nongnu/mastodon.html ## Summary: ━━━━━━━━━━━━━━━━━━━ A MASTODON CLIENT ━━━━━━━━━━━━━━━━━━━ 1 README ════════ `mastodon.el' is an Emacs client for the ActivityPub social networks that implement the Mastodon API. For info see [joinmastodon.org]. NB: `mastodon.el' now ships this readme as an .info file, so if you have it installed you should be able to browse this readme inside emacs. `C-h i' for info, then `m masto RET' should load it for you. [joinmastodon.org] <https://joinmastodon.org/> 1.1 Installation ──────────────── You can install `mastodon.el' from ELPA, MELPA, or directly from this repo. It is also available as a GUIX package. 1.1.1 ELPA ╌╌╌╌╌╌╌╌╌╌ You should be able to directly install with: ## Recent NEWS: [Not provided 🙁]