Fun fact about Outlook's image processing on Windows:
First of all, the JPEG artifacting is RIDICULOUS
If you copy-paste a PNG from word into an Outlook email composer, either via the Signature or via straight pasting image+text, upon sending, it will automatically convert it into a JPEG and artifacting will be really bad
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and AFAIK there's no option in the GUI to change this
@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
@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?