Install and Configure Mutt E-mail Client

$ sudo pacman -S mutt

mkdir -p ~/.mutt/cache/headers
mkdir ~/.mutt/cache/bodies
touch ~/.mutt/certificates
touch ~/.mutt/muttrc

# IMAP
set imap_user = <username>@gmail.com
set imap_pass = <password>
set spoolfile = imaps://imap.gmail.com/INBOX
set folder = imaps://imap.gmail.com/
set record="imaps://imap.gmail.com/[Gmail]/Sent Mail"
set postponed="imaps://imap.gmail.com/[Gmail]/Drafts"
set mbox="imaps://imap.gmail.com/[Gmail]/All Mail"
set header_cache = "~/.mutt/cache/headers"
set message_cachedir = "~/.mutt/cache/bodies"
set certificate_file = "~/.mutt/certificates"
# SMTP
set smtp_url = "smtp://<username>@smtp.gmail.com:587/"
set smtp_pass = $imap_pass
set ssl_force_tls = yes # Require encrypted connection
# Editing
set editor = "nvim"
set edit_headers = yes
set charset = UTF-8
# Sender
unset use_domain
set realname = "<name>"
set from = "<username>@gmail.com"
set use_from = yes

Allow less secure apps: ON