AbstractMailHelper A class all mail view helpers can extend from to ensure they're using the correct partials folder, etc.
Button Render a big call-to-action button.
Content This helper renders the white content area that contains the bulk of the message's actual content. You'd typically open this just after opening the document itself. You may want to include some supplemental content after closing this helper but before closing the document, however (e.g.
Document This helper renders the HTML document's header and footer. Just call its open() and close() methods to wrap the remainder of your message's view script.
Footer Render a footer area for things like unsubscribe links.
HeaderOne Render an H1.
HeaderTwo Render an H2.
Link Render a link (<a>) tag with all the needed inline styles.
Paragraph Render a paragraph tag with all the needed inline styles.