Bring the SendGrid pieces back together. Keep sending stable while the lifecycle moves.
Inventory the API, Dynamic Templates, contact data, suppressions, event callbacks, and marketing journeys before changing any live stream.
✓One stream first. Verify it, then move the rest.
Inventory before cutover
Inventory
Source material read
Rebuild
Created paused
Verify
Real inbox test
Switch
One trigger first
Destination flow
Paused until validation and explicit cutover
[ 01 / 03 ]What moves
Map every SendGrid surface that can change who receives what, when, and through which sender.
Find every sending owner
Record API keys, subusers, authenticated domains, senders, application call sites, and webhook consumers.
Version the templates that remain
Map Dynamic Templates and variables to tested, publishable versions instead of copying unused assets.
Reconcile contacts and suppressions
Resolve list membership, unsubscribes, bounces, and complaints before any replacement journey can send.
[ 02 / 03 ]Concept map
Translate SendGrid by responsibility, not product menu.
Separate delivery, customer state, template content, and journey logic so each can move safely.
Delivery
SendGrid can remain the carrier
Connect the existing key or move later
Templates
Dynamic Templates
Immutable published template versions
Journey
Marketing automation material
Paused flows rebuilt from source evidence
Questions people ask us
Untangle the stack before you move the traffic.
Inventory every SendGrid owner, rebuild one bounded path, and verify the evidence.