Recursive SPF with the 10-lookup limit, DKIM keys and DMARC policy
Email Template Generator
Build a responsive HTML email template with tables and inline CSS at 600px with preheader text, a button, dark-mode metadata, automatic UTM and a plain-text version, with size and compliance warnings.
Workspace
Preview
HTML
Plain text
How the result is calculated
The template is built with nested HTML tables and inline style attributes at a maximum width of 600px, which mail clients (Gmail, Outlook, Apple Mail) support. A hidden preheader is placed at the top of the body, with color-scheme meta tags for dark mode and a “bulletproof” table-based button with a background colour. UTM tags are appended while preserving the existing query and # fragment, all text is escaped, a plain-text version is produced, and the HTML size is checked against Gmail’s ~102KB clipping limit.
Limits:
It does not include MSO/VML conditionals for rounded Outlook buttons and does not test real clients, so send a test message before the campaign. Images are not embedded (add them as https links). Postal address and unsubscribe link are your legal responsibility.
FAQ
What is a preheader?
A line shown beside the subject in the inbox; it is hidden inside the message.
Why is my email clipped in Gmail?
Gmail clips messages above about 102KB; reduce the HTML.
