We’re trying to determine if some of our customers could use our outlook add-in and we are finding it difficult to determine this information from the web page Outlook JavaScript API requirement sets Documentation
Our add-in uses requirements set 1.5. We have customers using Exchange 2013 and 2016 (on-premise) along with an exchange web portal to access their mailboxes. Is this the same as Outlook on the web or is this different?
Can a customer use Outlook on Android or iOS along with any email account (say gmail) without having to use Office 365? How do roaming settings work in this case?