To sign documents created in DRD and forwarded by e-mail, you can use the third-party DocuSign service.

DocuSign setup

In order to be able to work with this service, you need to register with DocuSign to create an account, create a login and password, and get IntKey and AccountID. Contact the developers, they will provide you with all the credentials.
Then all this data must be saved in Dr Dispatch System Configuration in the DocuSign section
The "Set to Default" button allows you to fill URLs with default values that most likely coincide with those given to you by the developers.

E-Mail Setup

Depending on which mail service you use, select the appropriate setting

Adding a signature to the letter

To sign a document, then before printing it on the “Print Control” form that appears after clicking the [Print Forms] button, check the 2 flags "Email Report (No Preview)" (1) and "Sign via DocuSign" (2)
"Email Report (No Preview)" - forces the system to generate an e-mail in which this document will be attached instead of printing the document. Therefore, after clicking OK, the email preparation form will appear. Work in it is no different from usual.
The letter will be signed automatically after clicking the Send button.
After that, the DocuSign service will put an inscription on each page of the attachment and the letter will be immediately sent to the addressee. If all the settings are correct, then everything happens without additional windows or messages, completely invisible to the user.

Example1: this is the part of the page on which there is a signature

Example2