Create identities

Create adds a new identity/mailbox POST /api/v1/identities

Authentication & compatibility

Use a scoped bearer API key with identities:manage. The key is bound to its user and organization.

Owned sender identities support SES. Legacy identities with a Stalwart account can also synchronize password/deletion changes to Stalwart; SES identities do not require a separate mailbox server.

Contract 2026-10-04. Your running instance's /api/v1/openapi.json is authoritative for its deployed release.

Request

Set MAILAT_BASE_URL to your instance origin (without /api/v1) and MAILAT_TOKEN to an appropriate credential. Replace path placeholders and example data before running. These examples do not execute in this page.

curl --request POST "$MAILAT_BASE_URL/api/v1/identities" \
  --header "Authorization: Bearer $MAILAT_TOKEN" \
  --header 'Content-Type: application/json' \
  --data '{
  "displayName": "Example",
  "domainId": "00000000-0000-4000-8000-000000000001",
  "email": "[email protected]"
}'

Responses

HTTP statuses and body shapes below come from the pinned contract. Not every shared error applies to every request. Retain the original idempotency key when retrying a send.