1. Purchase Domains
Buy lookalike or backup domains (e.g. from GoDaddy, Porkbun).
Register 1 domain per Google Workspace account for maximum safety.
Do not create more than 3 inboxes per domain to avoid reputation damage.
2. Create Google Workspace Account
Go to workspace.google.com and sign up.
Enter your organization info (can’t be changed later).
Add your domain when prompted.
Create the admin account (you can add more inboxes later).
Store all login credentials in a secure spreadsheet for scale.
3. Domain Verification & Email Activation
Verify the domain inside your Google Workspace Admin Console.
If you’re using GoDaddy, Namecheap, Cloudflare etc., this can often be automated.
Activate Gmail services in the Admin Console.
4. Downgrade to Starter Plan (Optional)
Go to Billing > Subscriptions.
Find your current plan and choose "Upgrade or Downgrade."
Switch to "Business Starter" with a flexible plan.
5. Set Profile Picture for Each Mailbox
Go to your Google Account > Manage Your Account > Profile.
If editing is restricted, enable profile picture editing via Admin Console > Users > Other Options.
Set visibility to "Visible to everyone."
6. Set Up SPF, DKIM, and DMARC
SPF is usually auto-configured when activating Gmail.
DKIM: Go to Admin Console > Apps > Gmail > Authenticate Email.
Generate new record (selector: google, key length: 2048).
Add TXT record to your domain DNS and click "Start Authentication."
DMARC: Add a TXT record like:
v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=90; sp=none
7. Enable IMAP for Each Mailbox
Go to Gmail > Settings > See all settings > Forwarding and POP/IMAP.
Enable IMAP and save changes.
8. Authorize Prospi App in Google Workspace
Go to Admin Console > Security > API Controls > Manage Third-Party App Access.
Click "Add App" > "OAuth App Name or Client ID."
Paste the Client ID provided by Prospi and authorize it.
Mark the app as "Trusted" and enable access for all organizational units.
9. Connect Inbox to Prospi
Inside Prospi, go to "Email Accounts" and click "Add Account."
Choose "Google Workspace" or "Microsoft."
Follow the on-screen authorization steps.
Once authorized, the inbox will appear in your list.
10. Verify Inbox Status in Prospi
Go to Email Accounts page.
Wait a few minutes and check if the inbox shows a green checkmark under the "Authorized" column.
Inbox warm-up will start automatically.
You're Done
Inbox is now connected, verified, and warming up.
You can add up to 3 inboxes per domain and 10–60 inboxes per Prospi plan depending on your tier.
Make sure to let inboxes warm up for 2 weeks before launching campaigns.
💡 Want to skip the manual setup?
You can purchase Google Workspace inboxes directly through Prospi at 2.5x lower cost—and we’ll handle all configuration automatically for cold outreach.