I have been pulling my (thinning) hair out in recent months, dealing with spam filters. I send thousands of newsletters to subscribers as e-mail messages; yet, many of them do not arrive in the recipients' in-boxes. The problem revolves around a handful of e-mail providers. Indeed, most mail servers will accept and deliver this newsletter to subscribers, but a handful do not. The errant mail servers delete these newsletters in the spam filters.
Hotmail has been one of the "problem children" for some time. In fact, the problem has become worse in recent weeks: subscribers using a Hotmail address no longer receive this newsletter in e-mail although most other people do. Now a controlled test by publishing site HubPages.com proves the problem. In fact, Hubpages.com found that the problem is even bigger than anyone suspected.
The test focused on attached files (which are not a factor with this newsletter). Testing shows that Hotmail fails to deliver up to 81% of all attachment e-mails. The testing methodology was described in some detailed and reportedly has now been duplicated and confirmed by others.
If you have a Hotmail address and suspect that you are not receiving all your e-mail messages, you really need to read the article entitled Hotmail Fails To Deliver Up To 81% Of All Attachment Emails at http://hubpages.com/hub/Hotmail_Fails_To_Deliver_Up_To_81_Of_All_Attachment_Emails
Anyone for a Gmail account?