When I send an e-mail and if someone replies from a smart phone / or tablet I see an old e-mail signature , which is NOT even saved in : OPTIONS > E-mail > Signatures
If I send e-mail from Outlook and someone replies from Outlook : all works fine , NO issue.
But , if recipient replies from an iPhone - at the bottom of original e-mail I see new signature and old signature.
I checked = C:\Users\%username%\AppData\Roaming\Microsoft\Signatures , , OLD signature not found here.
What can I check?