批量发送

POST https://api.spacepost.dev/emails/batch

请求体是最多包含 100 个对象的 JSON 数组，每个对象的字段与发送邮件相同。批量发送可以节省往返次数，并且只占用一次速率限制。

import { SpacePost } from "@spacepost/node";

const spacepost = new SpacePost(process.env.SPACEPOST_API_KEY);

const { data, error } = await spacepost.batch.send(
  [
    { from: "Acme <hello@acme.com>", to: ["a@example.com"], subject: "Hi Ada", html: "<p>Hi Ada</p>" },
    { from: "Acme <hello@acme.com>", to: ["b@example.com"], subject: "Hi Bob", html: "<p>Hi Bob</p>" },
  ],
  { idempotencyKey: "weekly-digest-2026-w43" },
);

if (error) console.error(error);
else console.log(data.data.map((e) => e.id)); // ids in input order

curl -X POST https://api.spacepost.dev/emails/batch \
  -H "Authorization: Bearer $SPACEPOST_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: weekly-digest-2026-w43" \
  -d '[
    { "from": "Acme <hello@acme.com>", "to": ["a@example.com"], "subject": "Hi Ada", "html": "<p>Hi Ada</p>" },
    { "from": "Acme <hello@acme.com>", "to": ["b@example.com"], "subject": "Hi Bob", "html": "<p>Hi Bob</p>" }
  ]'

r = requests.post(
    "https://api.spacepost.dev/emails/batch",
    headers={"Authorization": f"Bearer {os.environ['SPACEPOST_API_KEY']}"},
    json=[
        {"from": "Acme <hello@acme.com>", "to": ["a@example.com"], "subject": "Hi Ada", "html": "<p>Hi Ada</p>"},
        {"from": "Acme <hello@acme.com>", "to": ["b@example.com"], "subject": "Hi Bob", "html": "<p>Hi Bob</p>"},
    ],
)
print(r.json())  # {"data": [{"id": "..."}, {"id": "..."}]}

{
  "data": [
    { "id": "0192e1c4-7a3b-7c1e-9d2f-3b5a8e6f4c10" },
    { "id": "0192e1c4-7a3c-7a02-8e10-6c0f9d7a2b31" }
  ]
}

返回的 id 顺序与输入数组的顺序一致。

行为

要么全部成功，要么全部失败。 只要数组中有任何一封邮件无效，整个请求就会以 validation_error 失败，且不会存储任何内容。message 会指出是哪一封邮件（(email 1)）。
配额只检查一次，按收件人总数计算。如果会超出你的限额，整个批次都会被拒绝。
每封邮件都支持完整功能：附件、标签、自定义标头、scheduled_at 和 tenant_id。如果有租户被暂停或超出上限，整个批次都会失败。
幂等键适用于整个批次。使用相同的键可以安全重试。
批次大小上限为 100 封邮件；更大的数组会返回 422。较大的列表请分块发送。

分块辅助函数

import { SpacePost, type SendEmailOptions } from "@spacepost/node";

const spacepost = new SpacePost(process.env.SPACEPOST_API_KEY);

export async function sendAll(emails: SendEmailOptions[], jobId: string) {
  for (let i = 0; i < emails.length; i += 100) {
    const chunk = emails.slice(i, i + 100);
    const { error } = await spacepost.batch.send(chunk, { idempotencyKey: `${jobId}-chunk-${i / 100}` });
    if (error) throw new Error(`${error.name}: ${error.message}`);
  }
}