Revert of commit 6d8f709fd8a5a3f16f02f53e0586bd8285700163.
Revert of commit 6d8f709fd8a5a3f16f02f53e0586bd8285700163.

This check was needed because the content_type may not exist for every sender.

jonge-democraten/website,jonge-democraten/website,jonge-democraten/website,jonge-democraten/website