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The format of an email address is local-part@domain, where the local-part may be up to 64 octets long and the domain may have a maximum of 255 octets. [5] The formal definitions are in RFC 5322 (sections 3.2.3 and 3.4.1) and RFC 5321—with a more readable form given in the informational RFC 3696 (written by J. Klensin, the author of RFC 5321 [6]) and the associated errata.
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.
To use Unicode in the domain part of email addresses, IDNA encoding must traditionally be used. Alternatively, SMTPUTF8 [3] allows the use of UTF-8 encoding in email addresses (both in a local part and in domain name) as well as in a mail header section. Various standards had been created to retrofit the handling of non-ASCII data to the ...
Etsy, Inc. is an American e-commerce company with an emphasis on the selling of handmade or vintage items and craft supplies. These items fall under a wide range of categories, including jewelry, bags, clothing, home decor, religious items, furniture, toys, art, as well as craft supplies and tools.
The client notifies the receiver of the originating email address of the message in a MAIL FROM command. This is also the return or bounce address in case the message cannot be delivered. In this example the email message is sent to two mailboxes on the same SMTP server: one for each recipient listed in the To: and Cc: header fields.
Users who registered before the switch to Google Mail were able to keep their Gmail address, although the Gmail logo was replaced with a Google Mail logo. Users who signed up after the name change receive a googlemail.com address, although a reverse of either in the sent email would still deliver it to the same place.
It provides guidelines for the presentation of telephone numbers, email addresses, and web addresses in print, on letterheads, and similar purposes. As described by the standard, + is the international prefix symbol , should precede the country code, and serves to identify the number following as the international telephone number.
In particular, this allows email addresses to use non-ASCII characters. Such addresses are supported by Google and Microsoft products, and promoted by some government agents. [41] The message header must include at least the following fields: [42] [43] From: The email address, and, optionally, the name of the author(s). Some email clients are ...