无法取消预定的 SendGrid 电子邮件（batch_id）

Question

使用 SendGrid 安排电子邮件，但我立即取消并删除（查看 scheduled_events 显示状态实际上已取消）。但是，电子邮件仍会发送给用户。

我知道它说“您可以取消或暂停与批次 ID 关联的所有 mail/send 请求，方法是将 batch_id 传递给“取消”或暂停预定的发送“端点”。 (https://docs.sendgrid.com/api-reference/cancel-scheduled-sends/delete-a-cancellation-or-pause-from-a-scheduled-send)

但在这个示例代码中，我将时间设置为 20 分钟，并且还尝试了 90 分钟或更长时间，电子邮件仍然送达。最后，我尝试在删除和不删除电子邮件的情况下执行相同的操作 (request4)。

我联系了他们的支持人员，但还没有收到回复，想知道我是否在这里做错了什么。

顺便说一句，我检查了状态代码和响应 - 它们看起来都很好（添加了描述打印状态的评论）

谢谢

package main

import (
    "fmt"
    "time"

    "github.com/sendgrid/sendgrid-go"
    "github.com/sendgrid/sendgrid-go/helpers/mail"
    "github.com/tidwall/gjson"
)

const apiKey = "*******" // replace with yours
const host = "https://api.sendgrid.com"

func main() {
    const MINUTES_TO_ADD = 20 // 20 mins
    email := "test@test.com"

    from := mail.NewEmail("X", "sender@test.com")
    subject := "subject"
    to := mail.NewEmail("Test", email)

    request := sendgrid.GetRequest(apiKey, "/v3/mail/batch", host)
    request.Method = "POST"
    response, err := sendgrid.API(request)

    if err != nil {
        return
    }

    batchId := gjson.Get(
        response.Body,
        "batch_id",
    ).Str

    htmlContent := `Hi`

    message := mail.NewSingleEmail(from, subject, to, "", htmlContent)
    message.SendAt = int(time.Now().Add(time.Minute * MINUTES_TO_ADD).Unix())
    message.BatchID = batchId
    client := sendgrid.NewSendClient(apiKey)
    mailSendResponse, err := client.Send(message)

    if err != nil {
        return
    } else {
        fmt.Println(mailSendResponse.StatusCode) // prints 202
    }

    request3 := sendgrid.GetRequest(apiKey, "/v3/user/scheduled_sends", host)
    request3.Method = "POST"
    request3.Body = []byte(`{
"batch_id": "` + batchId + `",
"status": "cancel"
}`)

    response3, err := sendgrid.API(request3)

    if err != nil {
        fmt.Println(err.Error())
    }

    fmt.Println(response3.StatusCode) // prints 201

    request4 := sendgrid.GetRequest(apiKey, "/v3/user/scheduled_sends/"+batchId, host)
    request4.Method = "DELETE"
    response4, err := sendgrid.API(request4)

    if err != nil {
        fmt.Println(err.Error())
    }

    fmt.Println(response4.StatusCode) // prints 204

    request5 := sendgrid.GetRequest(apiKey, "/v3/user/scheduled_sends", host)
    request5.Method = "GET"
    response5, err := sendgrid.API(request5)

    if err != nil {
        fmt.Println(err.Error())
    }

    fmt.Println(response5.StatusCode) // prints 200
}

Answer 1

当您批量发送电子邮件时，您可以通过取消批量来取消这些电子邮件。但是，我认为你在这里做的是通过删除批处理来取消取消。

From the docs:

When a batch is canceled, all messages associated with that batch will stay in your sending queue. When their send_at value is reached, they will be discarded.

When a batch is paused, all messages associated with that batch will stay in your sending queue, even after their send_at value has passed. This means you can remove a pause status, and your scheduled send will be delivered once the pause is removed. Any messages left with a pause status that are more than 72 hours old will be discarded as Expired.

批次保持 cancelled/paused 状态，但邮件仍在队列中。如果删除批次，则消息仍在队列中，不再知道它们已被取消。

要解决此问题，我认为您需要在第三次请求时停止上述代码。不执行请求4（删除批量），您的消息应该无法按要求发送。

无法取消预定的 SendGrid 电子邮件（batch_id）

Unable to cancel scheduled SendGrid email (with batch_id)

go

sendgrid

sendgrid-api-v3