The to array is required for all personalization objects , and must have at least one email object with a valid email address.

[alessandroperetti]

Hello community,

I have this payload in nodeJS and I am using @sendgrid/mail/7.6.1 library (node v.18.15.0):

{
    "from": "[email protected]",
    "to": "[email protected]",
    "templateId": "template-id",
    "personalizations": [
        {
            "to:": [
                {
                    "email": "[email protected]"
                }
            ],
            "customArgs": {
                "context": "example-string",
                "templateId": "template-id"
            },
            "dynamicTemplateData": {
                "confirmUrl": "example-url",
                "button": "example-button"
            }
        }
    ]
}

When I try to send the email I got the following issue in the response:

field: "personalizations.0.to"
help: "http://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html#message.personalizations.to"
message: "The to array is required for all personalization objects, and must have at least one email object with a valid email address."

Based on the response there is a missing to in personalizations array at position 0 but it seems inconsistant because is actually present. I guess the issue does not reflect the real issue is happening behind the scene.

Do you have any idea what is wrong about it?

Cheers

[alessandroperetti]

I solved moving customArgs in the root of the payload:

{
    "from": "[email protected]",
    "to": "[email protected]",
    "templateId": "template-id",
    "dynamicTemplateData": {
        "confirmUrl": "example-url",
        "button": "example-button"
      },
     "customArgs": {
         "context": "example-string",
         "templateId": "template-id"
      }
}

Actually I did not understand why is not working with the old structure. I leave the issue open in case someone helps to investigate.