Our email template can be download via: Email template
Note we do not use any tags that are not in the template above unless approved by your team leader. All cells styles are copied when creating new ones (i.e. for example, to create a new text cell, copy the styles from the template).
We currently use Email on Acid to test our emails.
When the test has run, we then check through each screenshot to ensure it displays correctly across all email clients.
If not, we then fix and re-test.
Once testing is complete, we share the link with the agency client.