By default, IncrediMail prevents web-based images from being displayed in your messages. To disable this and keep IncrediMail from blocking external images, follow these steps:
1. Open IncrediMail.
2. Click Tools and select Options.
3. Select the Security tab.
4. Under Incoming Message, click the External Image Settings button.
5. Uncheck the Block external images checkbox.
6. Click OK.
7. Click OK to close the Options window.