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  2. Message transfer agent - Wikipedia

    en.wikipedia.org/wiki/Message_transfer_agent

    A message transfer agent receives mail from either another MTA, a mail submission agent (MSA), or a mail user agent (MUA). The transmission details are specified by the Simple Mail Transfer Protocol (SMTP). When a recipient mailbox of a message is not hosted locally, the message is relayed, that is, forwarded to another MTA.

  3. Proton Mail - Wikipedia

    en.wikipedia.org/wiki/Proton_Mail

    Proton Mail (previously written as ProtonMail) is a Swiss end-to-end encrypted email service founded in 2013 headquartered in Plan-les-Ouates, Switzerland. It uses client-side encryption to protect email content and user data before they are sent to Proton Mail servers, unlike other common email providers such as Gmail and Outlook.com.

  4. Comparison of email clients - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_email_clients

    As of October 2016, email clients supporting SMTPUTF8 included Outlook 2016, mail for iOS, and mail for Android. [citation needed] See also. Comparison of feed aggregators; Comparison of browser engines; Comparison of mail servers; Comparison of webmail providers; List of personal information managers; Unicode and email; Webmail; References

  5. List of mail server software - Wikipedia

    en.wikipedia.org/wiki/List_of_mail_server_software

    Gordano Messaging Suite [b] hMailServer. IceWarp Mail Server (formerly Merak Mail Server) [b] Ipswitch IMail Server [b] IBM Lotus Domino [b] Kerio Connect. Kopano. Mailtraq. MDaemon.

  6. United States Department of Health and Human Services

    en.wikipedia.org/wiki/United_States_Department...

    The United States Department of Health and Human Services ( HHS) is a cabinet-level executive branch department of the U.S. federal government created to protect the health of the U.S. people and providing essential human services. Its motto is "Improving the health, safety, and well-being of America". [3]

  7. Office of the National Coordinator for Health Information ...

    en.wikipedia.org/wiki/Office_of_the_National...

    The Office of the National Coordinator for Health Information Technology ( ONC) is a staff division of the Office of the Secretary, within the U.S. Department of Health and Human Services. ONC leads national health IT efforts, charged as the principal federal entity to coordinate nationwide efforts to implement and use the most advanced health ...

  8. Internet Message Access Protocol - Wikipedia

    en.wikipedia.org/wiki/Internet_Message_Access...

    t. e. In computing, the Internet Message Access Protocol ( IMAP) is an Internet standard protocol used by email clients to retrieve email messages from a mail server over a TCP/IP connection. [1] IMAP is defined by RFC 9051 . IMAP was designed with the goal of permitting complete management of an email box by multiple email clients, therefore ...

  9. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.