I decided to send a short message to those customers asking them to provide me with a different email address. I changed the message format to plain text and re-sent the email to those customers who didn’t get it. I thought the problem might be in the message format (I sent a HTML email). That was strange because the email didn’t have any signs of spam. I found that a couple of dozens of emails were blocked by Barracuda and FortiGuard spam filters and returned. As always, I ran the Bounce Handler in EasyMail7 to process bounces. The majority of emails were sent successfully. The email contained a link from the domain. In fact, it wasn’t.Ī few weeks ago I sent an email campaign to my customers. I addressed this issue immediately, removed a hacked directory link exchange script from the site and removed all the scripts uploaded by scammers. Some time ago I received an email from PayPal telling that was probably hacked and used by spammers to send their PayPal fishing emails. There was only an open source directory link exchange script installed. I registered the domain 2 years ago but didn’t use it until the recent time. Here is a live example from my own experience. If your email message contains links from blocked domains, you have a “chance” to get it filtered or blocked. I thought the same until the recent time when I discovered that the links may be a cause of email blocking.

You will absolutely recognize spam emails at first sight: unknown email address in the From field, misspelled Subject, Subject lines written in ALL CAPS, large and often bold font size, pure promotional and sales content.įurthermore, have you ever paid attention to the links you use in your emails? You may think why you should care about the links if they are from your own domain. So, why do emails get blocked or filtered?Īs you probably guess the main reason why the emails are filtered is spammy looking content.

After you understand why ISPs block some emails and how to avoid the problems, you will be able to improve your email deliverability and increase your email open rate. Whatever the cause of the email blocking is, you can take it under your control and adjust your email program to overcome the ISP email blocking challenges in your future campaigns. It often happens that legitimate emails are being blocked or moved to the Junk folder by ISPs.

How to block emails in aol