Mails are printed with a smaller margin

Steps to reproduce:

1. Install WebApp 4.8 and connect a mailbox
2. Print a sample mail
3. Upgrade to WebApp 5.x
4. Print the same sample mail

Encountered: Mails printed from WebApp 5.0 and newer have a smaller margin. This may cause issues for printers that can't handle such small margins

Expected: Mails are printed with the same margins as in WebApp 4.8