Google Workspace Domain Migration & Email Deliverability

Hello talented Upwork freelancers! I am in need of a Google Workspace guru... PRIMARY OBJECTIVES: - Change Google Workspace primary domain. - Resolve email deliverability issues (may be resolved by the domain migration) CURRENT SETUP: My Google Workspace primary domain is an old one that I don't use anymore, except for this. Let's call it olddomain.com A few years ago, when I launched this business, I added the new domain as a secondary domain on the Google Workspace account. We've been using this for all email since then. Let's call it seconddomain.com We've now pivoted our business a bit, so have changed the domain we're using for the website and email. I added that as a new, additional secondary domain to the existing olddomain.com Google Workspace account. Let's call it newdomain.com GOAL: Make the Google Workspace Primary Domain = newdomain.com olddomain.com - is not used except for some old logins, so I still need access to email. But it can become a secondary domain. seconddomain.com - was used until recently, so we will need to maintain access to receiving emails indefinitely. Again, can be a secondary domain. I don't plan on using it to send emails much, if at all. EMAIL DELIVERABILITY: I've heard in the past week of a couple of people who've had my emails (sent from @newdomain.com) go to their spam folders. These are people who I had regularly communicated with before via @seconddomain.com This is concerning of course. Not even dealing with marketing emails, just general work emails to existing contacts. I'm wondering if they're getting flagged as spoofed emails due to the primary/secondary domain setup. GOOGLE WORKSPACE DETAILS: (6) active users (2) of those users are general mailboxes - office@ and service@. So they should have no Drive data to migrate. A few of the users have multiple aliases that we need to maintain. I.e. former employee emails, other general emails (info@ etc) Apps: - Drive, Calendar, Gmail, Voice, Meet, Keep* • I think I'm the only one that uses Keep, but there's a lot of data there I can't lose. EMAIL CLIENT: Not sure if it matters, but we use Front as our email client. DELIVERABLES: - I would like you to manage the Workspace migration and ensure we don't lose any emails, Drive contents, calendar entries, or Keep notes. - Resolve email deliverability issues. Although we're not doing any email marketing now, it is on the agenda for 2024, so let's proactively resolve any issues that might crop up Apply Job!