From your post, it sounds like you want to move all existing mail from one account to another using Outlook on your iPad.
If that’s the goal, please kindly note that Outlook for iOS can add and switch between multiple accounts, but it does not provide a mailbox migration/import tool in the iPad app itself.
I can see there's already a Q&A Assist reply under your post. To avoid repeating it, could you please confirm whether you already tried those suggestions, and if yes, what part was difficult or did not fit your situation?
To narrow this down properly, could you also clarify what the destination account is:
- another Microsoft 365 / Exchange mailbox, or
- a personal Outlook.com mailbox?
And just to confirm, do you also have access to a Windows PC or Mac with desktop Outlook, or do you need a solution that works only on the iPad?
If you need to move the entire mailbox: Microsoft’s official import/export articles show that mailbox export/import is done through desktop Outlook using a .pst file. Microsoft documents.
You can see these fficial Microsoft references:
- Export emails, contacts, and calendar items to Outlook using a .pst file
- Import email, contacts, and calendar from an Outlook .pst file
- Import and export Outlook email, contacts, and calendar
Looking forward to your reply and thanks for your understanding.
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