How to Read Outlook Email Signature in HTML

@Aaron_Ko: One is to create an html file for it, no images. Read that html file, output in a variable, and append it to your email body. Make sure to check isBodyHtml.

The 2nd way is to fetch your own default Outlook email signature. It should be sitting somewhere inside %AppData%\Microsoft\Signature\Default English - Main.htm. Exact path may vary depending on how your microsoft folder is structured. Caveat is that images won’t work.

Please refer: How to send a signature with the 'Send Outlook Mail Message' activity? - #5 by melodia04
[UIPath] How to include default Outlook signature dynamically in Send Outlook Mail Message activity - Surf & Perf