I am working with the google_gmail1 Rust library and encountering an issue while attempting to send emails. Since the doit() method for messages_send is private, I’ve been using the upload_resumable() method. However, this approach consistently results in a 400 (Bad Request) response, and the email is not sent even for simple plain-text emails.
Here’s what I’m doing:
1. I use the lettre library to construct a MIME-compliant email message.
2. The email message is Base64-encoded and stored in a file.
3. I then read the file as a stream and pass it to the upload_resumable() function:
let result = hub.users()
.messages_send(gmail_msg, "me")
.add_scope("https://www.googleapis.com/auth/gmail.send")
.upload_resumable(stream, mime_type)
.await;Despite multiple adjustments to the request body, headers, and encoding, the 400 Bad Request persists. This is the only email I’m sending during my tests, so I don’t believe it’s related to rate limits or quotas.
Steps to Reproduce:
1. Construct a MIME-compliant email using the lettre library or manually.
2. Encode the email message in Base64 and save it to a file.
3. Use the file as a stream and invoke the upload_resumable() method as shown in the code snippet above.
Expected Behavior:
The email should be successfully sent using the Gmail API without a 400 Bad Request error.
Actual Behavior:
The API consistently returns a 400 Bad Request response.
Could you confirm if this is a known issue or guide me on what might be wrong in the implementation?
I am working with the google_gmail1 Rust library and encountering an issue while attempting to send emails. Since the doit() method for messages_send is private, I’ve been using the upload_resumable() method. However, this approach consistently results in a 400 (Bad Request) response, and the email is not sent even for simple plain-text emails.
Here’s what I’m doing:
1. I use the lettre library to construct a MIME-compliant email message.
2. The email message is Base64-encoded and stored in a file.
3. I then read the file as a stream and pass it to the upload_resumable() function:
Despite multiple adjustments to the request body, headers, and encoding, the 400 Bad Request persists. This is the only email I’m sending during my tests, so I don’t believe it’s related to rate limits or quotas.
Steps to Reproduce:
1. Construct a MIME-compliant email using the lettre library or manually.
2. Encode the email message in Base64 and save it to a file.
3. Use the file as a stream and invoke the upload_resumable() method as shown in the code snippet above.
Expected Behavior:
The email should be successfully sent using the Gmail API without a 400 Bad Request error.
Actual Behavior:
The API consistently returns a 400 Bad Request response.
Could you confirm if this is a known issue or guide me on what might be wrong in the implementation?