It would appear that this Helpful Feature uses HTML code to phone home. You can disable HTML in Mail by going to Mail>Preferences>Viewing and unchecking "Display remote images." Search on HTML in Mail Help for details. > On 07-Mar-10, at 07:26: 58, Brian Durant wrote:: >>> Anyone know how to block MailInfo >>> http://619219.sigclick.mailinfo.com/web/signature.htm and similar >>> programs from phoning home, when I am using Mail.app to receive mail? >>> I don't want to mark the e-mails as spam because it is job related, >>> but I would like to prevent this and similar programs from sending a >>> receipt back to the sender. > On 3/10/07 10:36 AM, "Brian Durant" <globetrotterdk at gmail.com> wrote: > I guess I wasn't clear enough. I don't have MailInfo installed, but I > receive e-mails from Windows users that have it installed. I don't > want to mark their mail as spam, but I would like to make sure that I > block sending receipts back to the sender. >