mutt

Настройка IMAP сервера
https://www.dmosk.ru/miniinstruktions.php?mini=mutt

Настройка отправки через реальный почтовик:

• nano ~/.muttrc

set realname = "Backup Account"
set use_from = yes
set editor='nano'
set sort = reverse-threads
set sort_aux = last-date-received
## confirmation skipping
set fast_reply=yes        # when replying, don't prompt for address
set include=yes           # include original text on reply?
set forward_quote=yes     # include original text on forward?
set delete=yes            # don't ask for delete confirmation
set from = olegvilkotests@gmail.com
set imap_user = olegvilkotests@gmail.com
set imap_pass = PASS
set smtp_url= smtp://olegvilkotests@smtp.gmail.com:587/
set smtp_pass = PASS
## don't let your firewall kill your idle connection
set imap_keepalive  = 900

Пример отправки:

• ls > file.txt
• echo "Смотри вложение" | mutt -x -s "Метод 3" -a file.txt -- olegvilkovsky@gmail.com

Решаем ошибку:
No authenticators available
Could not send the message.

• yum install cyrus-sasl-plain