A company has a third party to host their emails on the 3rd party exchange 2010. All the users of this company is able to access emails using regular OWA and outlook. This company wanted to migrate all its users to office 365 as they have the credentials to control MX records. The third party has limitations in creating migration endpoints and IMAP all access has to happen using the Outlook anywhere.
The question here is without migration endpoint or IMAP having only the end users credentials is there a possibility of office 365 migration?