Event Webhook duplicates

[alexroussos]

The docs state that it's possible to receive duplicate events. In reality, it is virtually guaranteed. I receive each event an average of 3 times, and some events I have received as many as 46 times over a 29 hour period.

A reasonable dev would assume possible means infrequently, and that you might receive an event twice, maybe three times. This has implications when designing an integration with this API. I believe this should be considered a bug, but that's a separate issue; at minimum, the docs should not try to downplay a detail that is relevant for devs integrating with this API.

https://sendgrid.com/docs/API_Reference/Webhooks/event.html#-Duplicate-Events

[apigirl]

Hello @alexroussos,

This is definitely a bug. Please go ahead and contact our support team to report the bug. They also may be able to help you troubleshoot your specific use case. You can access support contact options by logging into https://support.sendgrid.com.

SendGrid Docs Team

[stotlyakov]

Hi all,
Why is this closed when is not fixed? I can confirm that as of now i still get 2-3 duplicate event for each type.

[sstrycker-zspace]

Found the issue, posting here for reference - in the docs it says you have to return a "2XX" HTTP response when the webhook posts to your endpoint otherwise it will keep trying.

[stotlyakov]

Nope, this does not change anything. I do return 200 ok and still same thing.

[stotlyakov]

Hmm, i wander if they can't understand new OkResult() .What exactly did you return?

[mars-boy]

Hi @stotlyakov any update on this. I am getting multiple events I have a requirement where I need to track click count too showing 3 clicks instead of 1 means its an issue .

[stotlyakov]

Yes, sorry for the late response. You have to ensure you return 200 ok to SendGrid
This is the response I give back. this ensures only one event and SendGrid will not try again.

return new OkObjectResult("Email progress logged.")

[reezvi]

@stotlyakov - not quite true. From my web api, I am returning new HttpResponseMessage(HttpStatusCode.OK), yet receiving multiple events for same status (i.e. Processed, Delivered, etc).