Is it possible to have 2 Minecraft accounts associated with the same email?

Two separate Minecraft/Microsoft accounts cannot share the same single sign‑in identity at the same time, but multiple accounts can be used side by side with different emails.

From the Microsoft account side:

• Microsoft personal accounts cannot be merged or combined, and purchases/progress cannot be transferred between accounts.
• Each Microsoft account has its own primary sign‑in email and any aliases; changing the associated email moves the same account to a new sign‑in address, it does not create a second account with the same email.
• It is not possible to “link, merge, or combine Microsoft personal accounts,” and one Microsoft account cannot be added as an alias to another.

Applied to the described timeline:

• When the email on the original Minecraft Java account was changed from email#1 → email#2 → email#3, that was still the same underlying Microsoft account being re‑aliased each time.
• After the last change, that original account would have been associated with email#3 (as its sign‑in address or alias) unless later changed again or the account was closed.
• Creating a new account after migration would have been a separate Microsoft account with its own email; it would not “share” ownership of the original Java license.

Regarding recovery:

• If the original account still exists and email#3 (or another alias on that same account) can be used to sign in, the Minecraft license should appear under that Microsoft account. If sign‑in works but the game does not show as owned, it usually means a different Microsoft account actually holds the license.
• If the original account was compromised or access was lost and standard account‑recovery steps fail, the account and its purchases (including Minecraft) cannot be moved to another Microsoft account, as transfers and merges are not supported.

So, the old account is not “shared” between two emails; it is a single Microsoft account whose sign‑in email was changed over time. Recovery depends entirely on successfully regaining access to that specific Microsoft account; if that is not possible, the old Minecraft account and its entitlements cannot be merged into or transferred to the new account.

References:

• Combining Microsoft accounts
• Help with "phone number is already used" in a Microsoft account
• Forgot my mail to my old account - Microsoft Q&A
• Need help with hacked microsoft account - Microsoft Q&A