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Deliverability Letter

Alternative Text

Also known as: Alt Text, Descriptive Text

Short text that explains what an image shows and why it is in your email. It helps people and email clients understand your message when the image does not load.

Alternative text is the short description you write for an image. It tells people what the image shows in plain words. Screen readers read it out loud for people who cannot see the image.

Alt text matters a lot in email. Many inboxes block images by default. Without it, your main message can be lost. With clear alt text, people still understand the offer or idea even if nothing loads.

When you write alt text, think about what the reader needs to know. Focus on the purpose of the image, not every small detail. For a sale banner, you might write "Summer sale, 30 percent off all swimwear" so the offer is clear even without the design.