Issue Summary
When parsing email bodies with the header "Content-Type: text/html; charset=utf-16," the description in the email request is displayed in Chinese, which is not the expected behavior.

Steps to Reproduce

1. Set the email service to use "Content-Type: text/html; charset=utf-16."
2. Create a new email request.

Expected Results
The description for email requests should match the language of the content in the email body.

Actual Results
The description of the email request is displayed in Chinese and does not correspond to the actual content of the email body.

Workaround
To avoid this issue, refrain from using "Content-Type: text/html; charset=utf-16." Instead, use "Content-Type: text/html; charset=utf-8."