Hi @Jonathan Brotto ,
According to my test, signatures between desktop and mobile devices do not support synchronization.
As a workaround, you can copy and paste your signature from a previous email to ensure it shows up the way you want it to.
However, the signature line on your phone is not HTML-enabled, so things like images or icons will not show up in a mobile signature.
If the answer is helpful, please click "Accept Answer" and kindly upvote it.
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