Images received with an attachment icon
Some email clients will show an attachment icon, regardless if the email signature has been coded correctly to not show images as attachments. Images are not actually attached to the email, in most cases, it's simply showing that user that their is an image in the email body.
We code our HTML email signature templates using best practices, which shows images without an attachment icon in a majority of email clients, however some email clients will always show the attachment icon, especially some MacOS clients, indicating that there is an image in the email, regardless if the image is actually attached or only included in a URL.
Outlook 2007, Outlook 2010, Outlook 2013 and Outlook 2016 Images showing as attachments
If you're sending an email from any version of Outlook on Windows and images are coming through as attachments, you need to install your signature using our Advanced Installation Guide or our Installer App instead.
When you simply copy and paste the signature directly into Outlook's native signature settings, Outlook works it's magic and extracts the images from the URL paths, compresses the images and saves them, and then re-attaches the images to email signature - which causes the images to come through as attachments to your recipients. By following the Advanced Installation Guide or using our Installer App, the HTML won't be touched by Outlook.
Image blocking occurs when an email client has settings to not show images enabled, and until the recipient either presses a "Load Images" button or link, the images will not show.
We cannot force images to be shown in email clients where users have settings to block images enforced. When your recipients press the load images link, the images will show correctly, in the body of the email.
Please be assured our code has been developed and tested over time by a Development Team that works consistently with HTML email signatures, and we do all that we can to ensure maximum compatibility between email clients. But no code in the world can force users to download images if they have settings enabled to block images, for privacy and security reasons.
Want to know which email clients allow blocking images? Read this article.