Sendgrid sg_event_id not sent with all events?

Question

Does anyone know why, when tracking Sendgrid events I don't see sg_event_id in every event? E.g. Open event doesn't have it, yet, Processed and Delivered do.

I was hoping to store events in DynamoDB with sg_event_id as PK, but its not always present...

My research is returning conflicting information:

http://it.toolbox.com/companies/sendgrid/news/event-api-update-new-tracking-parameter-added-74458 - added to the spec

https://github.com/sendgrid/docs/issues/239 - removed from the spec

Answer 1

I work for SendGrid.

We haven't finished adding this parameter to every event yet. We had a miscommunication where docs were released before it was fully implemented. Apologies for the trouble!