Question

I’ve managed to get email attachments onto Amazon S3 from a GAE incoming email, but does anyone know a technique to get an attachment, like an image, into the blobstore.

Any help would be much appreciated.

Code so far (with help from Alex)

upload_url = blobstore.create_upload_url('/upload')
msg = MIMEMultipart()
msg.set_type('multipart/form-data')
msg.set_payload({'file': content})
result = urlfetch.fetch(upload_url, payload=urllib.urlencode(msg), method=urlfetch.POST, headers={'Content-Type': 'multipart/form-data'})

Answer 1

App Engine (version 1.4.3) allows you to directly write data to the blobstore.
You no longer need to use the upload url method.