Linux Tutorials - Herong's Tutorial Examples - v5.43, by Herong Yang
"mailx" Command - Send and Read Emails
This section provides a tutorial example on how to install and use 'mailx' on CentOS computers to read and send emails locally or remotely via IMAP/POP and SMTP protocols.
What Is "mailx" Command? - "mailx" command is an enhanced version of the old "mail" command. "mailx" command can:
1. Install "mailx" on CentOS computer.
herong$ sudo dnf install mailx
2. Read local emails in mailbox format. No emails found.
herong$ mailx No mail for herong
3. Read local emails in Maildir/ format.
herong$ mailx -f Maildir Heirloom Mail version 12.5 7/5/10. Type ? for help. "Maildir": 3 messages 1 unread 1 herong@example.com Nov 15 11:55 12/376 2 herong@example.com Nov 15 12:13 19/681 "Test #2" >U 3 herong@example.com Nov 15 12:14 28/930 "test #3" & 1 Message 1: From herong@example.com Nov 15 11:55:18 2020 Return-Path: <herong@example.com> X-Original-To: herong Delivered-To: herong@example.com Date: Nov 15 2020 11:55:18 +0800 (CST) From: herong@example.com Status: RO Hello! & q
4. Send an email through local agent.
herong$ mailx herong Subject: Hello again From Mailx . EOT
5. Read remote emails from a POP3 server.
herong$ mail -f Maildir/ Heirloom Mail version 12.5 7/5/10. Type ? for help. "Maildir": 3 messages 1 unread 1 herong@example.com Nov 15 11:55 12/376 2 herong@example.com Nov 15 12:13 19/681 "Test #2" >U 3 herong@example.com Nov 15 12:14 28/930 "test #3" & folder pop3://localhost:110 User: herong Password: TopSecret "pop3://localhost:110": 2 messages 2 new >N 1 herong@example.com Mon Nov 23 11:55 /386 N 2 herong@example.com Tue Nov 24 15:21 /519 "Hello 2" & q
6. Send an email through a SMTP server.
herong$ mailx -S smtp="localhost:25" herong@example.com Subject: Hello 3 From STMP . EOT
Table of Contents
Cockpit - Web Portal for Administrator
SELinux - Security-Enhanced Linux
SSH Protocol and ssh/scp Commands
Software Package Manager on CentOS - DNF and YUM
vsftpd - Very Secure FTP Daemon
Postfix - Mail Transport Agent (MTA)
Dovecot - IMAP and POP3 Server
►Email Client Tools - Mail User Agents (MUA)
►"mailx" Command - Send and Read Emails
"Alpine" - Terminal-Based Email Client
Thunderbird Installation on macOS
Thunderbird Configuration for POP3S and SMTP
Thunderbird to Accept POP3S Certificate Exception
Thunderbird Configuration for IMAPS and SMTP
Thunderbird Configuratin for SMTPS Service
macOS Mail Manual Configuration
Accept Certificate Exception in macOS Mail
Windows 10 Mail Configuration Failed
SSL/TLS Connection Issue in Windows 10 Mail