Message size and frequency limitations
Each application registered to send Pushover notifications may send 10,000 messages per month for free, where one message is defined as successfully sending a message through our API to one user, regardless of the number of devices on their account. For Delivery Groups, each user in the group receiving that message counts as one message towards the application's quota.
One application assigned to a Team can send up to 25,000 messages per month for free. All other applications can send the usual 10,000 amount for free.
To send more than the free amount of messages per month, upgrade packages are available.
For per-message size limitations, please see the limitations section of our API documentation.