How to use Gmail API without raw attribute in JSON - google-api

Question

I'm try to send email using google gmail API. I've used Request body JSON with bearer token and Content-Type - message/rfc822.
Then I've used link below to send post request but I received the following errors.how to fix this issue ???
Post request Link -
https://www.googleapis.com/upload/gmail/v1/users/kasunysoft#gmail.com/messages/send
Request Body
{
"threadId": "Hi kasunjith",
"payload": {
"mimeType": "message/rfc822",
"headers": [
{
"name": "To",
"value": "hvn#gmail.com"
},
{
"name": "From",
"value":"kasunysoft#gmail.com"
},
{
"name":"Subject",
"value":"Subject Text"
}
]
}
}
I got response
{
"error": {
"errors": [
{
"domain": "global",
"reason": "invalidArgument",
"message": "Recipient address required"
}
],
"code": 400,
"message": "Recipient address required"
}
}

Answer 1

This means that your format in sending email is not valid. Check the documentation for Users.messages and Users.messages: send for the proper format.
{
"id": string,
"threadId": string,
"labelIds": [
string
],
"snippet": string,
"historyId": unsigned long,
"internalDate": long,
"payload": {
"partId": string,
"mimeType": string,
"filename": string,
"headers": [
{
"name": string,
"value": string
}
],
"body": users.messages.attachments Resource,
"parts": [
(MessagePart)
]
},
"sizeEstimate": integer,
"raw": bytes
}
You can also check out the following SO post for more in depth discussion about you error.
400 error. Recipient address required. JavaScript
How to send a message successfully using the new Gmail REST API?