Hello @PratapB ,
There's a known issue where Outlook desktop programs will force the buttons to have squared corners instead of rounded. Our devs are looking into what can be done from our side to address this, but at this time the only "workarounds" to avoid this would be to:
view the email via a View as Webpage link
view the email in another email program / app
If the issue is occurring on an email program / app other than an Outlook desktop client, please let us know which one and what device types you're replicating the issue on so we can get that info to our devs.
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