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List reserved legacy field names

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List reserved legacy field names

Use SendGrid: its Sendgrid Custom Fields API lets you list reserved legacy field names in a single step (GET /v3/contactdb/reserved_fields). capabilities.work can help you get signed up and connected.

  • Which field names are reserved and can't be used for custom fields?
  • Why was my custom field name rejected as reserved?
Say it to your AI assistant
  • List the reserved field names in the legacy contactdb.
  • Show me which names I cannot use for a custom field.
For your developer

GET /v3/contactdb/reserved_fields in Sendgrid Custom Fields API. Full spec on APIs.io.