Unlock the full potential of your email campaigns with strategic ALT text on every image.
Campaign Cleaner automatically adds and optimizes ALT text for every image in your campaign - using AI to generate meaningful descriptions that keep your message clear even when images are blocked.
Quick Overview of Features
Alt text - the alternative text attribute on an HTML image tag - tells email clients and recipients what an image contains when the image itself cannot be displayed. In email, this happens more often than most marketers realize: corporate email clients like Outlook block external images by default, many mobile users open emails before images fully load, and visually impaired recipients rely on screen readers to describe images through their alt attributes.
Beyond accessibility, alt text plays a direct role in deliverability. Spam filters look at the ratio of image content to readable text in an email. When images have no alt text and there's little visible text in the message, the email looks like it's hiding its content behind images - a tactic historically used by spammers. Properly written alt text gives spam filters something to read and evaluate, which improves your overall spam score.
Modern spam filters like SpamAssassin assign penalty points for specific HTML patterns, and missing alt text is one of them. The rule HTML_IMG_ONLY_NUMS and similar checks target emails where images dominate the layout without descriptive text alternatives. Even if your content is legitimate, a design-heavy email with multiple hero images and no alt text can accumulate enough spam points from these technical signals to shift delivery from inbox to junk.
Effective email alt text describes what the image shows and, where relevant, its function. For a product image, the alt text should name the product and any key detail like color or model. For a CTA button image, it should mirror the button's text exactly. For a banner image, it should summarize the message or offer the banner conveys. The alt text should be concise - typically under 125 characters - and avoid keyword stuffing or generic phrases like 'image' or 'photo here.'
Email accessibility affects a significant portion of your audience. Approximately 7-8 million Americans have some form of visual impairment, and many use screen reader software to navigate email. When your images have no alt text, screen readers announce 'image' or skip the element entirely - leaving visually impaired recipients with a degraded experience. Proper alt text is the single most impactful step toward making your email campaigns accessible.
Campaign Cleaner uses AI to analyze your images and generate meaningful, contextually appropriate alt descriptions for images that have missing or empty alt text. It audits every image tag in your campaign HTML, distinguishes between content images (which need descriptive text) and decorative images (which should use alt=''), and applies the correct treatment to each - saving significant time for large campaigns while ensuring every image has a proper description.
Are You Ready To Experience The Difference?
Become a part of the Campaign Cleaner community today, and join countless satisfied customers who have witnessed significant improvements in their email deliverability and campaign success. Don't let HTML issues hold you back; let Campaign Cleaner optimize your campaigns and boost your inbox rates.
