Multitone Appear
Multitone Appear transcends in-app messaging: messages can be sent with the app to colleagues by email, SMS, or pager - even if they don't use Appear. All communication is facilitated and logged by the Multitione i-Message system, on-premises or in the Cloud. This provides a detailed audit trail - Sent, Recieved, etc. - providing valuable management information.
Find out more - https://www.multitone.com/solutions/multitone-appear-messaging-app/