You are presented with the search results when you run :NotMuch.
Keybindings:
- <Enter> - show the selected message
+ <Space> - show the selected thread colapsing unmatched items
+ <Enter> - show the entire selected thread
a - archive message (remove inbox tag)
f - filter the current search terms
o - toggle search screen order
b - toggle folding of message bodies
c - toggle folding of citations
h - toggle folding of extra header lines
+ i - toggle folding of signatures
m - compose a new message
- s - toggle folding of signatures
+ r - reply to the message
+ s - enter search criteria
q - return to search display
? - reveal the message and thread IDs of what's under cursor
^] - search using word under cursor