{{::ts('The email subject is a single line. However, template codes may use multiple lines.')}}

{{:: ts('This content is a full HTML document (it has its own doctype/html/head/body). Switching to the rich text editor will discard that wrapper and keep only what is inside the body. This is normally fine for a User-Driven message, since CiviMail sends it as the body between a separate Header and Footer. If anything in this document\'s head is required - for example a style block used for a responsive email layout - stay in Raw HTML mode instead, since that would be lost.') }}

{{:: ts('If left blank, a plain-text version will be generated automatically from the HTML Content when the message is sent.') }}