How to send email with attachment using cURL with Azure Logic App - azure

Question

I am trying to build a simple Logic App in Azure, that sends an email with a zip attachment using cURL from a Linux VM.
In the Logic App, without the attachment it is working fine.
But it breaks once Attachment is configured.
JSON schema, When a HTTP request is received:
{
"properties": {
"Attachments": {
"type": "array"
},
"cc": {
"type": "string"
},
"from": {
"type": "string"
},
"html": {
"type": "string"
},
"subject": {
"type": "string"
},
"to": {
"type": "string"
}
},
"type": "object"
}
Config for Outlook Send an email v2, Logic App, Azure
Commands to send email from Linux VM:
# create attachment
echo "abcd" > test.txt
zip test.zip test.txt
# curl to send json to azure logic app, with attachment
curl -vvv --request POST \
--header 'Content-Type: application/json' \
--url 'https://prod-21.southeastasia.logic.azure.com:443/workflows/xxx/triggers/manual/paths/invoke?api-version=2016-10-01&sp=%2Ftriggers%2Fmanual%2Frun&sv=1.0&sig=xxx' \
--data '{"from": "xxx#outlook.com", "cc": "xxx#outlook.com, "Attachments": [{ "Content-Type": "BASE64_ENCODED_CONTENT", "Name": "test.zip" }], "to": "xxx#outlook.com", "subject": "Hello, World!", "html": "Hey, test email." }'
Error message from the Run History, Logic App, Azure
Full error from the log:
{
"status": 400,
"message": "Parameter 'Attachment Content' cannot be null or empty.\r\nclientRequestId: 40d2dc9c-549b-4608-xxxxxxxxxxxxxxx",
"error": {
"message": "Parameter 'Attachment Content' cannot be null or empty."
},
"source": "office365-sea.azconn-sea.p.azurewebsites.net"
}
Would like to know how to handle the attachment on this scenario. Any documentation would be helpful as well.
Thank you.

Answer 1

Would be also interested in this topic!
Did you try to use --form instead of --data? Or do you already have a solution for this?
I also tried to specify the "Attachments" property in logic apps as:
"properties": {
"Attachment": {
"contentEncoding": "base64",
"contentMediaType": "image/png",
"type": "string"
},
}
...