How can I automatically forward an e-mail and change sender?

"I use E4ward for that purpose. E4ward allocates aliases, which look like alias@username.e4ward.com. I give out these aliases, and E4ward forwards emails sent to them to my real email address, but with a tricked return address that I can use to respond such that my answer would seem to come from the alias.

The advantage in that kind of service is that I'm less exposed to spam, and when I do receive an unsolicited email I know exactly who is to blame.

I have tried a dozen such services before settling on E4ward as the best.
I used a free account for a couple of months, and was so satisfied that I paid the $10 yearly subscription.
Their service is very complete, missing only the feature of auto-expiring aliases, which I don't need.

Read this article for a description E4ward.com - Disposable Email Address Service:

E4ward.com is a down-to-earth and very
useful disposable email service that
makes it easy to prevent spam to your
real email address with easily
erasable aliases. You can use your own
domain with E4ward.com, but auto-expiring aliases
are not offered.


E4ward.com lets you set up unlimited disposable email
addresses.
You can set up custom aliases or use random characters to make
guessing more difficult.
Each E4ward.com can have a memo to help you remember which site or use
it was set up for.
E4ward.com lets you create aliases for multiple real email addresses.
You can use aliases at your own domain name with E4ward.com.
E4ward.com protects your real address even in replies by routing
them through its servers."

"I think you have a few options:

Sign on with a web hosting company which gives you SSH access and the ability to tweak your own mail settings. Then set up procmail to do this. My host does this for $10/month.
Use a local mail client to do this. At the moment I have a rule set up in my University Mail program (a Web version of Outlook, connected to their Exchange server) to do just what you're asking. (In fact I wish I could do real forwarding where it looks like the email actually came from its original recipient, but that client won't allow it.) If you do this, all the email will be downloaded and then resent.
Talk to an email forwarding service (like pobox.com), explain your case, and see what they can do for you. It's a pretty simple request, which they may not offer as a stock option simply because most people want their forwarded mail to show the original sender."

"If I understood you correctly, then there is a much easier way - you can simply add rules to Outlook:

http://www.technipages.com/automatically-forward-email-in-outlook-2007.html"

"In case anyone is still looking for an answer to this I looked everywhere and couldn't find a solution that didn't involve running Microsoft Outlook & leaving your computer on 24/7.

I've figured out a way to do it via IFTTT & Gmail, visit the App at the following URL: ifttt.com/applets/JDHcT76p-automatically-forward-all-emails-from-a-specific-email-address-hide-original-sender-s-email .

Sign up with the email address that is currently receiving the emails you want to be forwarded (this has to be a Gmail account, if your account is not a Gmail account you may be able to create a Gmail account & automatically forward all emails to that address from your current provider)
Put the email address of the person who is sending you the emails
Put the email address of the person who is going to be receiving the emails

You're good to go, it hides the original senders email address & shows your email, the same subject & body message."