If you’re having trouble downloading attachments from your Mailbox webmail, the issue is often related to an outdated browser version or stored cache data.

Start by checking that your browser is updated to the most recent version. Running an outdated browser can prevent attachments from downloading properly. Install any available updates.

How To Update Your Browser

• Google Chrome
• Safari
• Mozilla Firefox
• Microsoft Edge

After updating, completely close the browser application. Do not just close the tab. Quit the browser fully, then reopen it and log back into your Mailbox webmail. Test the attachment download again.

If the issue continues, clear your browser’s cache and cookies.

Helpful Guides for Popular Browsers

Use the appropriate guide below to clear your cache and cookies:

• Google Chrome
• Safari
• Mozilla Firefox
• Microsoft Edge

Once the cache is cleared, fully quit the browser again and reopen it before signing back into your Mailbox webmail. Then try downloading the attachment.

If the issue continues after updating your browser and clearing cache and cookies, try using a different browser or device to determine whether the problem is browser-specific.

If you still need help, contact support for further assistance.