Email signature image size/appearance problem
I am trying to include a company logo in my email signature. It is 4kb image, 144x129 pixels, 72 DPI. I am copying the image from co-workers signatures. They are on Outlook primarily and aren't have this trouble -- the image shows perfectly in their email. When I try to include it in mine, it turns gigantic. Properly displayed, the image should be roughly .5 cm; in mine, it is 3+ cm. It looks fine as the email is being drafted, but on receipt (and even in my sent folder) it turns large. I can send the same email in Mac Outlook and it looks fine.
I've even tried editing the HTML in the Library..Signatures folder. I either get the same problem (large image) or just an image placeholder comes up -- a blank square.
I am on a MacBook Pro running Big Sur 11.2.3.
MacBook Pro 13″, macOS 10.12