Set up external deliverability data integrations

Connect Google Postmaster Tools, Microsoft SNDS, or both to bring external sender reputation and inbox-placement data into the email deliverability dashboard.

For guidance on what to look for once connected, see Monitor email deliverability dashboard.

Prerequisites

Email channel enabled on the project
Analyses Viewer role
Permission to manage project integrations
Microsoft SNDS only: Dedicated sending IP. SNDS isn’t available if your project sends from shared IPs.

Project limits

Each project can monitor up to 50 domains and IPs combined. This limit is shared across all external data integrations.

Data history and retention

Source	History at first connect	Kept while connected
Google Postmaster Tools	Up to 120 days	Up to 13 months
Microsoft SNDS	Up to 90 days	Up to 13 months

If you disconnect an integration, data already collected stays in the dashboard for up to 13 months. Reconnecting restores the full available history.

Troubleshooting

If data doesn't appear or a connection stops working, see Troubleshoot email deliverability dashboard.

Best practices

Use a separate subdomain for each type of email. For example, keep transactional and marketing sends on different subdomains. This makes it easier to spot delivery issues by stream.
Label your IPs before connecting SNDS. It takes a few minutes and saves a lot of time reading charts later.
Add a campaign identifier to your email headers. This is the only way to see campaign-level data in the feedback loop panel.