Yes. Xink supports fully Office 365 with Outlook as your email program. Supported versions are Outlook 2010, 2013 and 2016 for Windows and Outlook 2012 and 2016 for Mac OS.
You need to install or deploy the Xink app only if you are using Outlook as the email program with Office 365. If you do not use Outlook but only use ‚Outlook on the Web‘ you do not need to install the Xink app. When the Xink app is installed, you can see the signature while you compose the email in Outlook. You also see the signature in ‚Outlook on t he Web‘ even if you have not installed the app, but only set up the cloud Office 365 integration.
No. If you only use ‚Outlook on the Web‘ you will not need to install the Xink app. Xink integrates directly in your Office 365 account then.
If you use both Outlook and ‚Outlook on the Web‘ you need to install the Xink app to get the signature into Outlook. You also need to set up the Office 365 integration in Xink to be able to see the signature in ‚Outlook on the Web‘ when you compose the email.
The Office 365 integration is needed if you want the signatures to show up in ‚Outlook on the Web‘ when composing an email with Office 365. If you do not use ‚Outlook on the Web‘ with Office 365 you do not need to set up this integration, but only install the Xink app because you will then be using Outlook as your email program.
No. If you are using Outlook only, then you don’t need to add the Office 365 integration stuff. You only need to install or deploy the Xink app.
Yes. See it here.
The permissions needed to complete the Office 365 integration are described in this KB article. Basically you need to assign application impersonation from Office 365 center but this is very easy to do for the Office 365 administrator.