Unfortunately this is a manual process. If you follow Google's workflow, you will have up to several days where emails will not be received.
https://support.google.com/a/answer/12099366?hl=en#zippy=%2Cdownload-google-workspace-data-optional%2Cset-up-the-new-google-workspace-account%2Ccopy-users-data-to-the-new-account My recommendation is to follow this, but before making the change final, switch mx records to a different email company during the transitions, so that no email is lost. | |
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