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Mail Ports

 
TCP/IP:
 
TCP- Transmission Control Protocol
 
IP- Internet Protocol

 
IMAP (Internet Message Access Protocol)
 
is a standard email protocol that stores email messages on a mail server,
but allows the end user to view and manipulate the messages as though
they were stored locally on the end user's computing device(s).

IMAP
by default uses TCP port 143.

 
Simple Mail Transfer Protocol (SMTP)
 
is an Internet standard for electronic mail (email) transmission.
 
SMTP by default uses TCP port 25.
 
 
 
SMTP is used only for sending messages, while IMAP (and POP3) are used to both send, receive, and read email messages.
 
 
Note:
 
IMAP uses port 143,
 
SSL/TLS encrypted IMAP uses port 993.
 
 
POP uses port 110.
 
SSL/TLS encrypted POP uses port 995.
 
 
SMTP uses port 25.
 
SSL/TLS encrypted SMTP uses port 465 .





 
         
Googlemail - Gmail
        


Googlemail - Gmail           Server:           Authentication:     Port:
SMTP Server
(Outgoing Messages)        smtp.gmail.com      SSL                 465

                                       smtp.gmail.com     StartTLS           587
IMAP Server
(Incoming Messages)       imap.gmail.com       SSL                993



        
     


 
         
Outlook.com                                      Server:                       Authentication:        Port:

            
SMTP   Server (Outgoing Messages) smtp-mail.outlook.com       StartTLS                      587
            
IMAP   Server (Incoming Messages) imap-mail.outlook.com        SSL                            993



 
         
Office365.com                                  Server:                        Authentication:                     Port:
            
SMTP   Server (Outgoing Messages)  smtp.office365.com         StartTLS                         587
            
IMAP   Server (Incoming Messages)  outlook.office365.com       SSL                               993
       
       


 
         
Yahoo Mail                                              Server:                        Authentication:                Port:
            
SMTP   Server (Outgoing Messages)        smtp.mail.yahoo.com       SSL                          465
            
IMAP   Server (Incoming Messages)        imap.mail.yahoo.com        SSL                          993
       
 
 
         
Yahoo   Mail Plus                                      Server:                         Authentication:               Port:
            
SMTP   Server (Outgoing Messages)         plus.smtp.mail.yahoo.com      SSL                     465
            
IMAP   Server (Incoming Messages)          plus.imap.mail.yahoo.com      SSL                     993
       


AOL.com                                              Server:                       Authentication:                     Port:
SMTP Server (Outgoing Messages)     smtp.aol.com             StartTLS                           587
IMAP Server (Incoming Messages)      imap.aol.com             SSL                                 993


 
AT&T                                                     Server:                           Authentication:                   Port:
            
SMTP   Server (Outgoing Messages)     smtp.att.yahoo.com         SSL                               465
            
IMAP   Server (Incoming Messages)      imap.att.yahoo.com         SSL                               993


 
         
Verizon                                                       Server:                            Authentication:               Port:
            
SMTP   Server (Outgoing Messages)     outgoing.verizon.net                                                    587
            
IMAP   Server (Incoming Messages)     incoming.verizon.net                                         143
       
       



   
Mail.com                                               Server:                   Authentication:              Port:
     
SMTP  Server (Outgoing Messages)      smtp.mail.com           SSL                         465
     
IMAP  Server (Incoming Messages)       imap.mail.com           SSL                         993
 






 
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