email.md

EMail

Videos

• Email Hatest the Living (Ricardo Signes, rjbs)

Links

• jwz: "HTML email, was that your fault?"
• blacklist checking

Connect via command line

# Connect via telnet
telnet example.com 25
# Encrypted connection
openssl s_client -connect example.com:587 -starttls smtp

HELO example.com
MAIL FROM: from@example.com
RCPT TO: to@example.com
DATA
Blah blah
.
<CR-LF>
<CR-LF>

Ports

• 25: SMTP, typically used for MTA to MTA
• 465: SMTPS
• 587

OfflineIMAP

• OfflineIMAP Manual
• Setting up Launchd for OfflineIMAP

Signals

• SIGUSR1 - aborts current sleep, triggering a full sync

Mutt

Manual

Open system mail spool

mutt -f /var/mail/USERNAME

Add header to messages

my_hdr X-Operating-System: TempleOS

Whitelist TLS fingerprint

tls on
tls_fingerprint <fingerprint>

Search

command	desc
~b EXPR	Search for messages containing EXPR in the body
~C EXPR	To: or CC:
~f EXPR	From:
~d [MIN]-[MAX]	messages with date-sent in date range
~l	mailing lists
~s	Subject:

Postfix

Retry delivery

postqueue -f

Drop queue

postsuper -d ALL

Print non-default configuration values

postconf -n

TinyLetter

Mailing list

5,000 subscriber limit

https://tinyletter.com/

Gmail shortcuts

desc	key
select	x
archive	e
delete	#
mark as read	S-r
select all	*-a
go to inbox	gi
go to all mail	ga
go to previous	gp
go to next	gn