I’ve replied in your other thread:
But overall, I wouldn’t try that:
Why SuiteCRM (and Other Email Clients) Don’t Allow iframes:
Security Risks:
iframes can be exploited to inject malicious content or exploit vulnerabilities in email clients, presenting a security threat to recipients.
Compatibility Issues:
Many email clients, such as Thunderbird, Gmail, Outlook, remove iframes to ensure email content remains safe and consistent across different platforms and devices.
Alternative Methods:
- Use a Thumbnail Image with a Link:
- Capture a screenshot or create a thumbnail of your YouTube video.
- Add a play button overlay to make it resemble a video player. (in Gimp, Canva, Inkscape or similar)
- Link the image to your YouTube video URL.
- When your recipients click on the image, they will be taken to YouTube to watch the video.
- Use an Animated GIF:
- Create a short GIF from your video to simulate a playable video.
- Link the GIF to the YouTube video.
Doing that, you’ll have the benefits of increased security and better mail client compatibility.
Additionally, with the thumbnail and play icon you’ll have a clear CTA in your email.