An error occurred while saving the commentmceolsen commented
For this to work - and for people I email to not get signature images as attachments after I reply to emails, I need to add the images to an external server. Airmail was saving these images in a folder buried on my computer - so - seeing them as images still on not links. All you need to do it upload them to a server and change the link from what it is (view the html in the signature settings) and change it to the new URL for where you uploaded them. I have a personal website I could load them into, but I'm assuming something like a public Dropbox folder might work as well.