Can anyone clarify how to handle file uploads from customers in Web Messaging - accepted MIME types and size limits
- Using the Guest API to post media attachments for tracing purposes
- Sending a PNG file via the upload URL returned by the platform for message attachments
- Receiving a 415 Unsupported Media Type error despite correct headers
- Need to know the exact MIME whitelist enforced by the platform
- Also unsure if the 25MB limit applies to the raw payload or base64 encoded size