Migration guide
Plan an email migration step by step.
Keep recipient preferences and delivery evidence in view while you prepare a new sending path.
Inventory what you send
Separate account messages from promotional campaigns. Record current sending volume, contacts, domains, templates and webhook consumers.
Protect the audience
Export suppression and consent records. Run authenticated contact preflight with import authorization and eligible plan access before a separate persistence step, then review exclusions before any campaign. Tenant-wide suppression import requires privileged authenticated access; project-scoped API keys are rejected.
Prepare the new path
Set up a project, domain authentication and API credentials. Test a small sample and inspect actual Email activity before moving production traffic.
Cut over deliberately
Move message categories in a controlled order. Keep request keys stable when retrying the same event, and confirm outcomes through activity and signed updates.
Run import preflight · Read the integration guide · Compare plans · Contact support