Here at E-dreamz we have our own email marketing tool called Emailz Direct where we manage hundreds of clients email marketing campaigns. We focus heavily on delivery rate which ensures clients get their email inbox’d to every customer on their list. Stats like Bounce Rate, Marked As Spam, Open Rates, etc. all are on our radar every time a blast gets sent out. In watching this I started to notice quite an interesting trend on who was marking email as spam.
I collected around a month’s worth of emails that totaled 103,436 unique sends. I then broke them down by which service/ISP they were sent to:

Nearly 61% of emails were sent to “The Rest” which was anything outside of the AOL, Hotmail, etc. Typically these consisted of company emails or personal domains. I was surprised to see Yahoo and AOL out numbering Gmail in recipients. I guess my perception is skewed since I typically email people in the tech business where their email is a company’s domain or Gmail.
Out of those 103,436 emails above we had 384 marked as spam. So 0.37% of all the emails processed thru Emailz Direct were marked as spam. This number still seems quite high considering how much we protect lists. Majority of the emails in Emailz Direct come directly from and opt-in form on the clients website. No one is buying emails or blasting viagra sales. The typical client we cater to is industrial B2B. To get on these lists you did business with the company, gave them your email, or filled out an online form with an opt in.
You would assume the ratios of Emails Sent Vs Marked as spam would stay mostly correlated right? Wrong! Check out which providers actually marked emails as spam:

AOL is boasting 39% of all emails marked as spam. Hotmail is in a not so far second place with 25%. How can two companies that represent only 19% of emails sent generate 64% of email spam reports?
The first place I thought to investigate is how the spam button is placed on the email tool bar. Let's take a look:
AOL:

Hotmail:

Gmail:

Comcast (Note: This might be dated. No Comcast Accounts here):

Yahoo:

Interestingly enough AOL has the most pronounced spam button. It is the last button on the right and even has a nice little “No” image right on the button. Hotmail labels spam as “Junk” unlike the rest. The other tool bars mostly follow the same template.
So we know part of the problem is related/correlated to the tool bar, but what about the users themselves? Hunch.com has done a great job breaking down of What your email domain says about you. A little less scientific study was performed over at The Oatmeal. AOL users take a beating in every study. It appears they need some education on how to properly unsubscribe from an email list they opted into.
Spam buttons are for.. spam!
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