Email Image Best Practices: Size, Alt Text, Blocking
Many email clients block images by default. Design emails that work with images off, and optimize those that load for faster rendering.
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Tags: image, email, best-practices
Email Images: Size, Format, and Deliverability Best Practices Email is the only digital channel where images can actively hurt your deliverability, cause your message to silently fail for a portion of recipients, and sometimes trigger spam filters — all without any error being reported back to you. Most other mediums are forgiving: a slightly oversized image just loads slowly. In email, an image handled incorrectly can mean your carefully crafted message is never seen. This guide covers every aspect of email images that affects both deliverability and user experience, from maximum width to alt text, from the @2x retina trick to the risk of image-only emails. Maximum Width: 600 Pixels The standard maximum width for HTML emails is 600 pixels. This isn't a technical limit — it's an industry…
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