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  2. Email address - Wikipedia

    en.wikipedia.org/wiki/Email_address

    An email address consists of two parts, a local-part (sometimes a user name, but not always) and a domain; if the domain is a domain name rather than an IP address then the SMTP client uses the domain name to look up the mail exchange IP address. The general format of an email address is local-part@domain, e.g. jsmith@[192.168.1.2], jsmith ...

  3. Simple Mail Transfer Protocol - Wikipedia

    en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

    The Simple Mail Transfer Protocol ( SMTP) is an Internet standard communication protocol for electronic mail transmission. Mail servers and other message transfer agents use SMTP to send and receive mail messages. User-level email clients typically use SMTP only for sending messages to a mail server for relaying, and typically submit outgoing ...

  4. List of postal codes - Wikipedia

    en.wikipedia.org/wiki/List_of_postal_codes

    The first digit in NNN format and the first two digits in NNNN format refer to one of the 12 municipalities of the country. PO Box address does not need a block number or city name, just the PO Box number followed by the name of the country, Bahrain. Bangladesh: 1972-12-16 BD: NNNN Barbados: BB: CCNNNNN 5 digit postal code preceded by BB ...

  5. Block and unblock email addresses in AOL Mail

    help.aol.com/articles/block-and-unblock-email...

    Block email addresses. 1. Open an email or select it from your mailbox. 2. Click the More icon . 2. Click Block Senders. 2. Optionally, select to also delete emails you've received from the sender.

  6. International email - Wikipedia

    en.wikipedia.org/wiki/International_email

    Although the traditional format for email header section allows non-ASCII characters to be included in the value portion of some of the header fields using MIME-encoded words (e.g. in display names or in a Subject header field), MIME-encoding must not be used to encode other information in a header, such as an email address, or header fields like Message-ID or Received.

  7. Variable envelope return path - Wikipedia

    en.wikipedia.org/wiki/Variable_envelope_return_path

    Variable envelope return path. Variable envelope return path ( VERP) is a technique used by some electronic mailing list software to enable automatic detection and removal of undeliverable e-mail addresses. It works by using a different return path (also called "envelope sender") for each recipient of a message.

  8. Uniform Resource Identifier - Wikipedia

    en.wikipedia.org/wiki/Uniform_Resource_Identifier

    Uniform Resource Identifier. A Uniform Resource Identifier ( URI ), formerly Universal Resource Identifier, is a unique sequence of characters that identifies an abstract or physical resource, [1] such as resources on a webpage, mail address, phone number, [2] books, real-world objects such as people and places, concepts. [3]

  9. Compose and send emails in AOL Mail - AOL Help

    help.aol.com/articles/aol-mail-compose-and-contacts

    2. In the "To" field, type the name or email address of your contact. 3. In the "Subject" field, type a brief summary of the email. 4. Type your message in the body of the email. 5. Click Send. Want to write your message using the full screen? Click the Expand email icon at the top of the message.