Email Options Template Body

Inside Options page of the plugin I edited the template of the email: Email Options > Body

The text inside the textarea is displaying correctly, also after saving changes.

But inside the source message sended are addes backlash \ can’t understand why.

Portion of source template:
style="background-color:#f5f5f5; margin:0; padding:70px 0 70px 0; -webkit-text-size-adjust:none !important; width:100%">

Portion of email message:
style="background-color:\#f5f5f5; margin:0; padding:70px 0 70px 0; -webkit-text-size-adjust:none \!important; width:100%">

So the messagge is not styled correctly.