Hello,
Hi,
Thank you for contacting Aspose support team.
Aspose.Email can be used to access the Office365 account. You may please check this feature using following sample code and share the feedback.
IEWSClient client = EWSClient.*getEWSClient*(**"https://outlook.office365.com/ews/exchange.asmx"** , **"user@domainonmicrosoft.com"** , **"password"** );
ExchangeMessageInfoCollection coll = client.listMessages(**"Inbox"** );
System.***out*** .println(coll.size());