Kaleyra will not maintain all your historical usage data.
As per the Data Retention Policy that Kaleyra has, the data will be maintained only for the previous 1 financial year only. The older data will be purged and not maintained on our servers.
However, in case required, we can make provisions to store older data for you, at an additional cost.
Speak to your Kaleyra Account Manager on this to get started on the process of maintaining your personalized usage data reserve with Kaleyra.