Mutt

Configuration file:

~/.muttrc

delete:

[Shift + d]
Delete messages matching:
  # delete all ~s: subject 
  ~s .* 
  # delete all emails matching the pattern in "from" field
  ~f pattern

# purge
$

move:

s

flags:

clear: W
set: w
select: 
  /
  ~F

show only match:

l
~f pattern

show all:

l
all

http://www.mutt.org/doc/manual/

Example:

l
  ~f pattern
  OR
  ~s pattern
[Shift + Del]
l
  all