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Full user review
"Displays attachments (not logos) in Mac and Outlook."
I have used this app for years with NO problems. Non-Mac contacts receive in-line images in the email body (not icons); you set parameters for size and other attributes, for sent and received mail. A logo in your signature, will display properly.
None that I have found.
Well made plugin for Apple's Mail.app. Ensures compatibility with Outlook and G-Mail. Displays in-line images (such as signature logos) according to your settings.