250ok DESIGN

Preview your campaign in 30+ email clients and devices.

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Identify revenue-impacting issues before you send.

As new devices and applications are constantly introduced, it’s increasingly difficult to ensure consistent design and user experience across your campaigns. With 250ok Design, you can access the industry’s leading rendering providers – Litmus and Email on Acid – to stay ahead of the ever-changing email landscape.


Comprehensive Spam Filter Testing

250ok Design tests your creative against common spam filters including Barracuda, Symantec, Spam Assassin, Outlook, and many more so you can identify and fix spam triggers before deploying your campaign.

Great Presentation = Happier Customers


Ensure Design Consistency

You’ve spent countless hours assembling your creative. 250ok Design helps you ensure that it’s presented to your customers in the way you envisioned. Effective, optimized communication means highly engaged recipients.


Actionable Feedback

Large file sizes, broken images or links, and invalid markup are just a few issues we’ll help you fix. 250ok’s optimization engine provides actionable feedback and suggestions on how to optimize your campaign for success.


Are you a #SeriousSender?