Importing and updating contacts
with 
To automate the import and update of contacts from one application to another.
Emails, SMS and voice messages
with
To automate the sending of messages between Digitaleo and your application.
What you can do with 
Synchronise your contacts on one side only
For example: update a contact in Digitaleo when a request is generated in Jira Service Desk.
Automate your SMS, emails and voice messages
For example: send an SMS to a Digitaleo contact when their request is updated on Jira Service Desk.