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sendBatchEmails sends an ordered batch of transactional messages. Use it when one provider request should create many independent emails.

Example

automations/send-resend-batch.automation.ts

Inputs

emails is an array of 1–100 items using the same fields and custom-content or template rules as sendEmail. Batch sends do not support attachments and fail before the request if any item contains them. Per-email idempotencyKey values are ignored; use the optional batch-level idempotencyKey, retained for 24 hours. Optional account selects the Resend binding.

Output

Returns { data: { id: string }[] }. IDs use the same order as the input emails, so keep positional correspondence when storing results.