SMTP - 25, 465, and 587
POP - 109, 110, and 995
IMAP - 143, 220, and 993
Port number of SMTP is 25 and of IMAP is 143. (These are the standard port numbers used)
To send and receive email, the primary ports that need to be open are TCP port 25 for SMTP (Simple Mail Transfer Protocol) used for sending mail, and TCP port 143 for IMAP (Internet Message Access Protocol) or TCP port 110 for POP3 (Post Office Protocol) used for receiving mail. Additionally, secure connections often utilize TCP port 587 for SMTP with encryption and TCP port 993 for IMAP over SSL. Ensuring these ports are open allows for proper email communication.
SMTP and HUB ports!
Gmail uses the technology or the protocols to send mails. It works on port number 487 for SSL. IMAP and SMTP are the protocols used.
SMTP (simple transfer mail protocol) which is used as the outgoing mail server and it uses port number :25 POP3 (Post Office Protocol 3) is the most recent version of a standard protocol for receiving e-mail. POP3 is a client/server protocol in which e-mail is received and held for you by your Internet server and it uses port 110
IMAP and SMTP use the standard Simple Authentication and Security Layer (SASL), via the native IMAP AUTHENTICATE and SMTP AUTHcommands, to authenticate users. The SASL XOAUTH2 mechanism enables clients to provide OAuth 2.0 credentials for authentication. The SASL XOAUTH2 protocol documentation describes the SASL XOAUTH2 mechanism in great detail, and libraries and samples which have implemented the protocol are available.
80 is HTTP, 25 is SMTP and 20/21 are used for FTP.
POP3 is one of two e-mail inbox protocols (POP3: Post Office Protocol version 3; IMAP: Internet Message Access Protocol). SMTP (Simple Mail Transfer Protocol) is used in conjunction with either POP3 or IMAP to allow users to send e-mail addresses as well as receive them. Most web-based e-mail services does this transparently behind their networks and present a fancy UI for users to access their e-mail inboxes. However, you can opt to enable IMAP/POP3 + SMTP if you wish to not have to open up a Web browser every time you want to look at your e-mails, and use a dedicated e-mail program instead (i.e. Microsoft Outlook or Mozilla Thunderbird)
Common protocols like HTTP and HTTPS are used for transferring web pages and secure communications over the internet, with HTTPS providing encryption for data security. FTP (File Transfer Protocol) facilitates the transfer of files between computers on a network. SMTP (Simple Mail Transfer Protocol) is used for sending emails, while IMAP (Internet Message Access Protocol) and POP3 (Post Office Protocol) are used for retrieving emails from a mail server, with IMAP allowing for message management on the server and POP3 typically downloading messages for local storage.
SMTP (Simple Mail Transfer Protocol) - sends mail only POP (Post Office Protocol) - retrieves mail and manages mailboxes IMAP (Internet Message Access Protocol) - retrieves mail and manages mailboxes
FTP; HTTP; DNS (uses both TCP and UDP); several e-mail protocols including POP3, SMTP, IMAP4.
There is no "website" that can create email. Email is a type of communication handled by a server through a certain protocol (POP3, SMTP and IMAP being the most common).There are various free email services that offer a free email address like Hotmail, GMail and Yahoo! Mail.However, if you wanted to set up your own mail server so that you could use a custom domain, protocol, etc., you would need to install software such as SMTP and IMAP.