Techniques are provided for generating a transaction alert for a transaction whether the transaction was processed by a first payment processing network associated with an alerting platform or the transaction was processed by a second payment processing network not associated with an alert platform. An authorization request message associated with a transaction is received by a transaction processing server configured to receive authorization request messages from a first payment network and a second payment network. If the authorization request message was routed through the second payment network, alert initiation data is transmitted to an alert platform associated with the first payment network. The alert platform is configured to apply at least one alert criterion to the alert initiation data to determine if an alert is to be generated, generate the alert, and transmit the alert to a mobile application.