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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.

  3. Country code top-level domain - Wikipedia

    en.wikipedia.org/wiki/Country_code_top-level_domain

    A country code top-level domain (ccTLD) is an Internet top-level domain generally used or reserved for a country, sovereign state, or dependent territory identified with a country code. All ASCII ccTLD identifiers are two letters long, and all two-letter top-level domains are ccTLDs.

  4. List of Internet top-level domains - Wikipedia

    en.wikipedia.org/wiki/List_of_Internet_top-level...

    This list of Internet top-level domains (TLD) contains top-level domains, which are those domains in the DNS root zone of the Domain Name System of the Internet.A list of the top-level domains by the Internet Assigned Numbers Authority (IANA) is maintained at the Root Zone Database. [1]

  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. Get started with Extended AOL Mail

    help.aol.com/articles/get-started-with-extended...

    Get started with Extended AOL Mail. With Extended AOL Mail, rest easy knowing that all your emails, along with the files and photos attached to them, will not be purged from your email account due to inactivity. With your subscription to Extended AOL Mail you: - No longer have to worry about logging into your AOL account.

  7. Send messages from an extra email address in AOL Mail

    help.aol.com/articles/send-messages-from-an...

    A send-only email address gives you all the benefits of multiple email addresses without any of the added hassle. Enjoy conveniences such as one password and a centralized Inbox for all your emails. Send email from an extra email address. 1. Compose a new email. 2. Select your extra email address in the "From" pull-down menu. 3.

  8. International email - Wikipedia

    en.wikipedia.org/wiki/International_email

    International email. International email arises from the combined provision of internationalized domain names (IDN) [1] and email address internationalization (EAI). [2] The result is email that contains international characters (characters which do not exist in the ASCII character set), encoded as UTF-8, in the email header and in supporting ...

  9. .us - Wikipedia

    en.wikipedia.org/wiki/.us

    about.us. .us is the Internet country code top-level domain (ccTLD) for the United States. It was established in early 1985. Registrants of .us domains must be U.S. citizens, residents, or organizations – or foreign entities with a presence in the United States or any territory of the United States. [2]