Hi there,
Within the settings for you profile, you can setup the HTML or text that you’d like to have within an email. To do so, visit this link and then click the profile you’d like to edit:
https://www.addthis.com/settings/publisher
From there, look for Email Templates, whereby you can create additional templates to be used.
For more information Email Templates, check out our support documentation:
http://support.addthis.com/customer/portal/articles/381246-email-templates
I’m marking this thread as resolved as I expect Matt’s links to have helped and we haven’t heard back. If we’re mistaken and you’re still having issues with matching your template styles, please feel free to reopen it or reach out to us and let us know about the issue.