Quality control tip: make sure to test your outbound marketing emails in a variety of email clients (email readers) as they will look different in each one…without a doubt.
Your email will most likely be viewed using some combination of the following devices and email clients (based on December 2013 Litmus email analysis):
You may have noticed that mobile devices make up three of the top 5: iPhone, Android and iPad. It’s important to test not only via your desktop, but also via a phone or tablet as they can all render differently.
There are so many email clients out there, getting your email to look perfect in each and every one would be a next to impossible. To narrow the scope, use your website analytics to determine what systems the majority of your audience is using and make testing and optimizing within those platforms part of your quality control SOP. Use tools like Litmus or Email on Acid to preview your message in numerous device/client combinations.