- Create folder named
Staff Info Request.mailstationery
- Inside, create folders
Contents/Resources/
- Save as image and convert to thumbnail.tiff: http://i.stack.imgur.com/t7239.png
- Replace auto-generated
thumbnail.tiff
after installation with custom image.
Location of custom mac mail stationery:
~/Library/Containers/com.apple.mail/Data/Library/Application Support/Mail/Stationery/Apple/Contents/Resources/Custom/
More info here: http://www.chriswrites.com/create-custom-html-email-templates-in-the-os-x-mail-app/