How to send files (Images, Audios, PDF documents) hosted in Google Drive
you can now send Whatsapp Images, Audios and PDF documents that are stored in Google Drive. This is very useful if you don’t have a web server to serve those files through http/https.
The process is exactly the same but you need to ensure first that the file is available to anyone who has the link to the file.
How to do it step-by-step.
1) Go to your Google Drive and Share the file
2) Share the file as “Viewer” to “Anyone with the link”
3) Copy the link 
4) You can use the link to send the file (image, audio, document) using the respective endpoint in the “file”, “audio” or “document” parameter.
Problems?
If you get an error, try to dowload the file using the link from another browser (or anonymous browser) where the user is not logged in. If the problem persist, please contact support@textmebot.com