When you create a message in Mailing Designer 2 (MD2), you can use the Virtual Inbox Test feature to test your message to see how will render in various desktop, mobile, and webmail email clients.
TIP: Learn more about Virtual Inbox Test in Create Messages (MD2).
The following tables list, by type, which email clients will be tested.
Desktop clients
| Apple Mail 12 | Apple Mail 13 | Outlook 2007 |
| Outlook 2010 | Outlook 2010 (120 dpi) | Outlook 2013 |
| Outlook 2013 (120 dpi) | Outlook 2016 | Outlook 2016 (120 dpi) |
| Outlook 2019 | Outlook 2019 (120 dpi) | Outlook Office 365 |
| Mozilla Thunderbird |
Mobile clients
| iPad Air 3 | iPad Pro (9.7-inch) | iPad Pro (11-inch) |
| iPad Pro (12.9-inch) | iPhone 7 | iPhone 7+ |
| iPhone 7 Outlook | iPhone 8 | iPhone 8+ |
| iPhone 11 | iPhone 11 Pro | iPhone 11 Pro Max |
| iPhone SE | iPhone X | iPhone XR |
| iPhone XS | iPhone XS Max |
Webmail clients
| AOL Chrome | AOL Firefox | Comcast Chrome |
| Comcast Firefox | Comcast IE 11 | Free.fr Chrome |
| Free.fr Firefox | Free.fr IE 11 | Freenet.de Chrome |
| Freenet.de Firefox | Freenet.de IE 11 | Google Apps Chrome |
| Google Apps Firefox | Google Apps IE 11 | Gmail Chrome |
| Gmail Firefox | Gmail IE 11 | GMX Chrome |
| GMX Firefox | GMX IE 11 | Libero Chrome |
| Libero Firefox | Libero IE 11 | Mail.ru Chrome |
| Mail.ru Firefox | Mail.ru IE 11 | Office 365 Chrome |
| Office 365 Firefox | Office 365 IE 11 | Outlook.com Chrome |
| Outlook.com Firefox | Outlook.com IE 11 | T-Online.de Chrome |
| T-Online.de Firefox | Telstra/BigPond Chrome | Telstra/BigPond Firefox |
| Telstra/BigPond IE 11 | Web.de Chrome | Web.de Firefox |
| Web.de IE 11 | Yahoo! Chrome | Yahoo! Firefox |