
HTML Countdown Timer for Email (No JavaScript Needed)
Short answer: an HTML countdown timer for email needs exactly one piece of HTML — an <img> tag whose src points at a timer URL that serves an animated GIF. There's no JavaScript to write, because email clients strip <script> from every message, and nothing about the countdown requires it: the animation lives inside the image file, and the timer service regenerates that image with the correct time remaining on every open. Copy the snippet, paste it into your ESP's code or HTML block, position it near your call to action, and send a test.
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