Merging my multiple emails under one account

Microsoft accounts and their subscriptions, storage, and data cannot be merged or combined. Each Microsoft account (each email used as a Microsoft account) keeps its own purchases, OneDrive storage, and data separate.

Key points for this scenario:

1. Merging accounts or emails
   • It is not possible to link, merge, or combine Microsoft personal accounts into one, and purchases or data (including OneDrive storage) cannot be transferred from one account to another.
   • An existing Microsoft account email address cannot be added as an alias to another Microsoft account. You also cannot add an email address that is already associated with a work or school account as an alias.
   • Because of this, the two accounts that each have a Microsoft 365/OneDrive purchase must remain separate; the storage from one cannot be merged into the other.
2. Using accounts side by side
   • Both accounts can be used side by side instead of merged:
     • Add both accounts to Outlook to access email from each in one place. See “Add an email account to Outlook for Windows”.
     • In OneDrive, both personal and work/school accounts can be added to the OneDrive app and used at the same time, but their storage remains separate. Files can only be copied or dragged between them, not merged at the storage level.
3. About aliases
   • Aliases let one Outlook.com mailbox have multiple email addresses that share the same inbox and settings, but:
     • An alias cannot be an email address that is already its own Microsoft account.
     • An alias cannot be an email address already associated with a work or school account.
   • Aliases therefore cannot be used to merge the two existing Microsoft accounts or their subscriptions.
4. Refund for the duplicate subscription
   • The context provided does not include the refund process details. Refunds for an unnecessary second purchase are handled through the place of purchase (Microsoft Store, retailer, etc.). Follow the standard subscription management and billing guidance for the store where the second plan was bought.
5. Getting OneDrive to sync with the correct storage
   • Sign out of OneDrive on the PC and sign back in with the Microsoft account that actually has the active 1 TB subscription intended for use.
   • Ensure only that account is configured in the OneDrive sync client if the goal is to use that storage only. If both are configured, remember that their storage quotas are separate.

References:

• Combining Microsoft accounts
• How do I merge my OneDrive for home with my OneDrive for work or school ?
• Changes to Microsoft 365 email features and storage