Popular topics: How many characters can I send in an SMS? How to get started with ClickSend

How to securely supply files for post/fax

Our send letters and send fax endpoints accept a public URL to a PDF file.

If you prefer to not supply a public URL, there's another option: You can pass a file object to our 'uploads' endpoint first, which returns a URL that can be used with any of our send endpoints. The uploads endpoint returns a URL which is public by default, but can be changed to private here: https://dashboard.clicksend.com/#/account/settings/security. If you set it to Private, only we will be able to access that URL. It will also be destroyed within 10 mins.


To clarify:

  1. Update this setting to Private: https://dashboard.clicksend.com/#/account/settings/security
  2. POST your file to /uploads https://clicksend.docs.apiary.io/#reference/uploads/upload-a-file/upload-a-file
  3. Passed the returned URL from the API response above to the send letters or send fax endpoints.



Was this article helpful?

Can’t find what you’re looking for?

Our award-winning customer care team is here for you.

Contact Support