Once you've connected your Litmus account to Taxi, you can preview your emails across all the devices and email clients available to your Litmus account.
To preview your email in Litmus:
Go to the email you want to test
This will open the dropdown where you can preview your email across different devices.
Select 'Litmus Previews'
After a few seconds, your email will be rendered across all the devices
This is inherited from your Litmus account settings.