Not spam until setting up authentication

In our first email campaign since we set up domain authentication we had a number of our subscribers let us know that the email went to their spam/junk mail folder. Even more surprising was that they told us that this was the first time our email was marked as spam. Gmail was one that specifically mentioned.

I guess my question is why are our emails being seen as spam only after we set up the authentication? Has anyone else experienced this?


Mathew Mathew, 9 years ago


If you DNS records are all setup and verified, then DomainKeys will only improve the situation, never make it worse. It is probably just an unfortunate coincidence more related to the particular content in that campaign. Soon we will introduce our spam and design testing tool that might help track down some of these issues - watch the blog for updates.

Get in touch with us on Twitter:
We're also on Facebook:
ThriveAfrica, 9 years ago

Ok, just wanted to see if anyone else has experienced this.

Thanks Mathew.

cellar46, 9 years ago

Our company has experienced "Spam Detected" in the subject line of our emails for the past 6 months. I have tried contacting our web host but they said it had to do with our content. I removed the word "free" from my last email blast and made sure I had plenty of text to graphics ratio but it still ended up as Spam.

Everyone on our email list has signed up at our retail store and they complain that they're not getting our weekly email. We have about a 25% open rate and the owner is ready to go with another email distribution system.

Please help!

Mathew Mathew, 9 years ago

Hi Donna,

These can be really tricky, and as your host says, it is most likely the content that is being flagged. You'll really need to do some testing with different content to try to narrow down what the issue is. Start with a minimal email to make sure you can get that through, and add pieces in until you can see what is triggering it.

Regarding open rates, check out our article:

Get in touch with us on Twitter:
We're also on Facebook:
Stormy Stormy, 9 years ago

Hi Donna,

Any chance we can have a look at this email? What doesn't flag up as 'spammy' to one person might be recognised by another :)

No-one expects the Spanish Inquisition!

200,000 companies around the world can't be wrong.

From Australia to Zimbabwe, and everywhere in between, companies count on 
Campaign Monitor for email campaigns that drive real business results.

Get started for free