Install HTML editor in Gmail from Chrome Web Store.
How to get started and troubleshoot this extension is explained in support note.
HTML Editor for Gmail
HTML Editor for Gmail: FAQ (Frequently Asked Questions)
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How to send HTML email in Gmail?
Since Gmail was introduced way back in 2004, many changes have been made to the email provider. One of the first changes was to remove the HTML editor and just keep the WYSIWYG editor. While Gmail doesn’t offer the functionality of an HTML editor, it does still support HTML.
Can I embed my iframe into an email?
Most email platforms don’t support iframes due to security risks and the static nature of emails. As a result, platforms like Gmail and Yahoo block iframe content. Instead, consider sharing a direct link or using an image of your form linked to its URL in emails.
Video: How to customize emails with an HTML editor in Gmail
The video demonstrates the use of a split-screen HTML editor in Gmail for creating custom-designed emails. It provides a step-by-step guide on accessing the editor, offers a real-time HTML design preview, and explains how to incorporate various elements into emails. The editor also includes a WYSIWYG tab for code-free design, and allows users to preview the design on different devices. Additionally, it describes how to save the HTML files to Google Drive.