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Leanest way to send an email from bash

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# 8  
Old 07-22-2014
I agree that expect is a much more robust way to do this. In my case the mail server is on my intranet and the connection is very robust.


PS. It looks like the To: CC: and BCC: is just for the sake of the client. RECP TO: controls who actually gets the mail.
# 9  
Old 07-23-2014
You can also use "nc" (netcat) instead of telnet. Should be a lot simpler as you don't have to spawn a subshell.
# 10  
Old 07-23-2014
AFAIK, expect always spawns a subshell.

The script generated with expect and using netcat doesn't look much different.
Kind of a toss up, I guess.
set timeout -1
spawn $env(SHELL)
match_max 100000
expect -exact "\$ "
send -- "nc localhost 25\r"
expect -exact "nc localhost 25\r
220 Laptop ESMTP Postfix\r\r
send -- "ehlo localhost\r"
expect -exact "ehlo localhost\r
250-SIZE 10240000\r\r
250 DSN\r\r
send -- "mail from: me\r"
expect -exact "mail from: me\r
250 2.1.0 Ok\r\r
send -- "rcpt to: you\r"
expect -exact "rcpt to: you\r
250 2.1.5 Ok\r\r
send -- "data\r"
expect -exact "data\r
354 End data with <CR><LF>.<CR><LF>\r\r
send -- "subject : Test\r"
expect -exact "subject : Test\r
send -- ".\r"
expect -exact ".\r
250 2.0.0 Ok: queued as 52D7ED2060C\r\r
send -- "^D"
expect -exact "\$ " 
send -- "^D"
expect eof

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