Is there a way to address email (i.e. a word or some code) that would place that email in a specified inbox folder? not using internal rule, rather the beginning of this sort happening as it comes in?

Question

is there a way to address email (i.e. a word or some code) that would place that email in a specified inbox folder?  not using internal rule, rather the beginning of this sort happening as it comes in?
In other words
I tell a friend if he is emailing me on a particular subject, is there something he can do at his end ([email protected]/research)
like adding the word research at the end of my eamil address that would tell my inbox to place that in the inbox/research folder?
If I have to use a rule on my end, then do I tell him to just place the word research in the subjct line and then I write a rule to place anything with the word research in the subject line in my inbox/research folder?
will the subject line be required to only have the one word research to work, or will the rule look for any presense of that word in the subject line?
thanks
eric

Answer 1

iCloud email supports 'plus' addressing. http://en.wikipedia.org/wiki/Email_address#Address_tags
So your friend could just add '+research' to the username part of your email address, and you setup a rule at icloud.com to put all emails sent to that address into a particular folder.
For example:
[email protected]
There's no way to do it without rules on the server though.