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I know this email address is valid, but it hard bounced

Valid email addresses can hard bounce for many reasons. Reading bounce headers (SMTP replies) can provide insight on what caused an address to hard bounce.

Design an Email with the Legacy Builder

Get tips for using layout, calls to action, style, branding, content, tone, and testing in your campaign in our legacy builder.

Customize Your Footer Content

Learn how to customize your Mailchimp footer. And get tips for what to include in your footer.

Create an Email on iOS

Learn how to create, design, and send email campaigns on your iPhone or iPad.

Create an Email on Android

Learn how to create, design, and send email campaigns on your Android device.

Add an Audio Link to an Email

Add a link to your music or podcasts or other audio files to your Mailchimp emails.

Add Alt Text to Images

Alt text is a short description that displays when a subscribers is unable to access an image. Learn how to add alt text to your email campaigns.