Prevent doubled header of html part
Prevent doubled header of html part
controlshift/premailer-rails,fphilipe/premailer-rails,doorkeeper/premailer-rails,fphilipe/premailer-rails,doorkeeper/premailer-rails,controlshift/premailer-rails,controlshift/premailer-rails,uswitch/premailer-rails,fphilipe/premailer-rails,uswitch/premailer-rails