Auto-incrementing Bounce IDs will exceed signed 32-bit integers in the next 2-3 months. If you store these IDs in a database, or process them using your own code, please ensure you update your DB/application to use int64 values. As an even better solution, instead of using Bounce IDs for your application needs, consider switching to using our new Suppressions API, which avoids the need for this ID altogether. Please let us know if you have any questions.
