Email & Website Domain Migration

I’m moving everything from teneekahill.com.au to teneekahill.com and need a savvy tech to make the switch smooth and tidy over the next few days.

Here’s what I’m looking to achieve:
• Migrate every Gmail-hosted email (inbox, folders, contacts, and history) from my current *.com.au account into the matching addresses on teneekahill.com.
• Shut down the old *.com.au mailbox once all data is confirmed on the new domain.
• Update my website so it now lives at teneekahill.com, including redirects that preserve SEO and ensure visitors or links pointing to the .com.au domain land on the correct .com pages.

I already hold admin rights to both domains and their email accounts but would like hands-on guidance to double-check DNS, MX, SPF and any Google Workspace settings so everything keeps flowing without interruption.

Please let me know how you plan to handle the migration, what checks you’ll run to confirm nothing is lost, and your estimated timeframe to wrap it up.