API Method MessageCompose
From Updox API
Provide appropriate credentials for the user who will be sending the message:
Provide any relevant additional parameters. If an attachment is to be sent, it must be specified here:
Sending this transaction consists of the following request JSON and response JSON and returns a token:
Use this token to construct a url in the following manner: https://{environment}/sso/messageCompose/{vendorId}/{token}
which for this example would look like this: https://updoxqa.com/sso/messageCompose/updox/611e840357c9dd58625436996cc2631910188c61
Browsing to this url will show the following one-use-only Direct message compose screen:
