Ubidots users and resellers have the flexibility to manage their end user monthly usage using Limits, a powerful feature that enables Administrators to set a maximum quota of Ubidots features. For example, an Administrator might only allow an end user the maximums: 100 emails and 10 devices per month.
How to set up Limits
From your Ubidots account, Organizations -> select an organization -> Limits (found in the left panel).
Next, click on the pencil to adjust the limits. All limits are expressed as ( "n" active "n" allowed).