and AFAIK there's no option in the GUI to change this
@brandon that might actually be a server side (I.e. exchange) option. Sounds like an effort to conserve bandwidth by compressing the hell out of images in emails. Is the exchange server corporate run? If so, I doubt that option is needed anymore. Maybe contact IT and suggest a change?
@splatt9990 It's not.
I can paste a PNG directly into the signature say from explorer or Windows Photo Viewer, and that doesn't get converted or compressed
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