The design and spam test is an automated test tool, built into your account. It shows you what your email will look like in all the major email clients, before you send it. It also runs your campaign through popular spam filters to detect anything that could prevent delivery.
You can see what your email looks like in different browsers when viewing a web-based email client, by clicking the browser names near the top.
Billing for design and spam tests
On the Essentials/Unlimited and Premier monthly plans, design and spam tests are free. If you have credits on pay per campaign, it costs 500 credits per test.
What the tests include
The test generates screenshots of how your email will look in popular web, desktop and mobile email clients.
For some email clients you can also view the result in different web browsers, as shown in the image above.
Screenshots can also be viewed by clicking on the email name, or mobile device, in the left sidebar.
If you have access to view reports, check out the Email client usage report to see which email clients are used by the majority of your recipients.
The test also runs your email through spam filters to see which ones it passes or fails. We test with two email client filters: Gmail and Outlook 2013, and two server-side filters: Spam Assassin and Symantec Messaging Gateway.
Available email clients and spam tests
Web-based email clients
- AOL
- Gmail
- Google Apps
- Microsoft 365
- Outlook.com
- Yahoo!
Desktop email clients
- Outlook 2019 (Windows 10)
- Outlook 2021 (Windows 11)
- Outlook Office 365 (Windows 10)
- Apple Mail 15
- Apple Mail 15 (Dark Mode)
- Apple Mail 16
- Apple Mail 16 (Dark Mode)
Mobile email clients
- iPad Pro (11-inch)
- iPad Pro (12.9-inch)
- iPhone SE 2nd Gen
- iPhone 12
- iPhone 12 (Dark Mode)
- iPhone 13
- iPhone 13 (Dark Mode)
- iPhone 14
- iPhone 14 (Dark Mode)
- iPhone 14 Pro
- iPhone 14 Pro (Dark Mode)
- iPhone 14 Pro Max
- iPhone 14 Pro Max (Dark Mode)
- Pixel 5 (Android 11, Gmail)
- Pixel 5 (Android 11, Gmail, Dark Mode)
- Pixel 6 (Android 12, Gmail)
- Pixel 6 (Android 12, Gmail, Dark Mode)
- Pixel 7 (Android 13, Gmail)
- Pixel 7 (Android 13, Gmail, Dark Mode)
Spam filters
- Gmail
- Outlook 2013
- Spam Assassin
- Symantec Messaging Gateway (formerly Brightmail)
Test a draft campaign
Campaign checklist
You can run an inbox test when viewing your draft campaign from the campaign checklist by clicking Run inbox tests at the top of screen.
Campaigns area
You can also run an inbox test from the Campaigns area when viewing Overview or Drafts. Find the campaign you want to test, click on the three-dot menu for that campaign, then choose the Inbox tests option.
Most results will be returned within the first few minutes. There is no need to stay on the page or logged into your account while the test is running.
If you do need to come back later, you can return to the test results or run a new test via the same steps as above.
Manual testing
If you have access to different email clients, use the Send a test option from the campaign checklist to see how your campaign is rendered in each of them. For example, you can set up free email accounts at web-based clients and use the feature to send an email to those addresses.
To test other desktop or mobile email clients, ask friends or colleagues if they use different services and devices that you could send a test to. Ask them to take a screenshot of the campaign as it appears in their inbox and send it to you.