George King said:
To change your actual internet email address, you need to
talk to your Internet Service Provider. They need to
change it on their system.
If you're on a company network, same applies except you
need to talk to your network admin.
If lexi was asking how to change their *real* e-mail address then, yes,
lexi will need to contact their ISP to have their username changed
(providing the ISP doesn't already provide a Member Service page to do
this). If it is a disposable webmail account, like at Hotmail or Yahoo,
lexi won't get any support and the only option is to cancel their
current e-mail account (to kill that e-mail address) and open a new
account (for a new e-mail address).
If, however, lexi wants to keep the current real e-mail account but
simply report to recipients a different e-mail address, no change is
needed at the ISP. Your e-mail address reported to the recipient is NOT
captured from the e-mail account that you use its SMTP server to send
your message. Whatever e-mail address that the recipient sees is what
the *client* told the SMTP server to use; i.e., the client gets to put
the From and Reply-To headers in the e-mail data, not the SMTP server.
That's why spammers have bogus addresses; they can say it is whatever
they want, whether bogus, someone else's valid e-mail address, or
(rarely) their own (but usually for a disposable webmail account which
is not for the ISP from which they spewed their crap). According to RFC
2821, "the mail data include the memo header items such as Date,
Subject, To, Cc, From"
(
http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2821.html). The data is
what the client generated and sent. For the format of Internet message
(i.e., the data sent by the client), see RFC 2822
(
http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2822.html).
Simply open your account in your e-mail client. You will see a Name
field where you can enter whatever name you want to report (and has
nothing to do with the username for the billing account with your ISP).
In the e-mail address field, put whatever you want in there. If it is
an e-mail account then you should use your real e-mail address; you
shouldn't be e-mailing anyone with a fake return e-mail address
(although it can still be for an account other than with your ISP, it
should still be for a valid e-mail account; you might send from your ISP
but you want to retrieve your e-mails at, say, Yahoo). If it is a
newsgroup account, you should munge your e-mail address (or use a bogus
one if you never want to receive e-mails from newsgroup users); see
http://members.aol.com/emailfaq/mungfaq.html about munging your e-mail
address (but always be sure to munge so that it is NOT nor CANNOT be
someone else's e-mail address now or in the future).
Note that the above applies if you are using an ISP and an SMTP server.
If you are on a corporate network and using, say, Exchange, the
administrator can force your From and Reply-To headers to match those
for your account despite what you have specified within your local
e-mail client.