To install your seal in Outlook for Mac, download the installer app below.
Please Note: Apple secures your system to protect you from opening apps unverified my Apple. To open, right click on the file and while holding the "option/alt ⌥" key, click open. A dialog box will appear and you can click the open button to launch the file.
Step1: enter your seal URL, the one that ends with an s then click OK
Step 2: enter your certificate url, the one that ends with a c then click OK