Spam Testing ResultsTesting your design in all the different email clients out there is the most frustrating part of sending email campaigns. Our design and spam testing tool changes all that by doing the hard work for you. For only £5 you'll get all this with a single click...

See screenshots in all the major email clients

See screenshots of exactly how your email will look in more than 20 of the most popular desktop, web and mobile email clients like Outlook 2007, Windows Live Hotmail, Gmail, Lotus Notes, iPhone, BlackBerry and many more.

Image blocking and browser variations

Most of the popular email clients enforce image blocking and sometimes the same email client renders your emails differently in Firefox or IE. Not only will we take screenshots of your design, but we'll take multiple versions with images on, images off and when we can, how it looks in two different browsers.
Browser Variations



Included in each test

We'll generate screenshots with images on and off for these clients:

Desktop Email Clients

Web-based Email Clients

  • AOL 9
  • Apple Mail 3
  • Apple Mail 4
  • Lotus Notes 6.5.4
  • Lotus Notes 7
  • Lotus Notes 8
  • Outlook 2000
  • Outlook 2003
  • Outlook 2007
  • Outlook 2010
  • Outlook XP
  • Thunderbird
  • Windows Mail
  • AOL Web
  • Gmail
  • Mobile Me
  • Hotmail
  • Yahoo! Mail

Mobile Email Clients

  • Apple iPhone
  • Apple iPad
  • BlackBerry
  • Nokia Symbian S60
  • Windows Mobile 6.5

Tested against spam filters & firewalls

Spam Filter ResultsGetting your email delivered isn't just about choosing a great email service provider. Your content might be triggering filters and not being read.

Instead of just scanning your content for "spammy words", we’ll pass your email through real spam filters and tell you which ones it passes, and which failed (though unfortunately we can't find out why).

We’ll also run your email through a number of key spam firewalls - the gatekeepers for most ISP’s and large corporations.

Can't I just do this myself?

Sure, but it's a big job, and costly. You'll need to create test accounts at all the free ISP's above like Hotmail and Yahoo, sign up (and pay) for other ISP's like Earthlink and Comcast, set up a few virtual machines to cover different operating systems and purchase and install each of the spam filters we test in. Total cost, just under a cool £6,500.

Or, you can click your mouse once and we'll do the lot for you.

Do I have to be a customer?

Nope. As long as you have a free account with us, you can pay for just our testing tool to get your design sorted out with no obligation to use Doo Mails for anything else.

Read next...

Mobile phone app

iPhone AppDoo Mails now on your mobile devices like the iPhone and Android phones.


Email client & spam testing

Test your design before you send it in all of the following email clients...

AOLApple MailGmailHotmailLotus NotesMobile MeMicrosoft OutlookThunderbirdWindows MailYahoo!

...and while you're at it we'll test it against key spam filters and firewalls.


Doo Mails in 30 seconds

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