On 03/12/10 11:13, steve-ALUG@hst.me.uk wrote:
"marketing" emails from companies are widely distributed, and consequently just for this reason, some anti-spam systems will mark them as spam. Putting the sender of the marketing email in your address book really may prevent their email being marked as spam and ensures it gets through.
The other reason they want to be added to the addressbook is, presumably, to make it more likely that remotely hosted graphics will be shown as intended, now that many (most?) email clients require the recipient to click a button to download remote graphics (again for anti-spam reasons).