Integrations
Connect Letters to the tools you already use.
Shopify
Sync products, orders and customers.
ManageStripe
Trigger receipts from payments.
ManageKlaviyo
Import audiences and events.
ConnectSegment
Stream events into Letters.
ConnectZapier
Automate with 6,000+ apps.
ConnectSlack
Get send alerts in channels.
ManageHubSpot
Two-way contact sync.
ConnectWebhooks
Post events to your endpoint.
ConnectGA4
UTM and revenue attribution.
Connect