notmuch
Command-line based program for indexing, searching, reading, and tagging large collections of email messages.
TLDR
Configure for first use
$ notmuch setup
Add a tag for all messages matching a search term
$ notmuch tag +[custom_tag] "[search_term]"
Remove a tag for all messages matching a search term
$ notmuch tag -[custom_tag] "[search_term]"
Count messages matching the given search term
$ notmuch count --output=[messages|threads] "[search_term]"
Search for messages matching the given search term
$ notmuch search --format=[json|text] --output=[summary|threads|messages|files|tags] "[search_term]"
Limit the number of search results to X
$ notmuch search --format=[json|text] --output=[summary|threads|messages|files|tags] --limit=[X] "[search_term]"
Create a reply template for a set of messages
$ notmuch reply --format=[default|headers-only] --reply-to=[sender|all] "[search_term]"
