What’s the best way to test before and after an MBP update?

The best way to test before and after an MBP update involves establishing clean baselines, maintaining consistent testing methodology, and isolating variables. Send controlled test messages before suspected changes to establish normal behavior.

After the update, replicate the same test messages to the same seed accounts. Compare results using identical measurement criteria. Differences in inbox placement, delivery timing, or other metrics indicate update effects.

Control variables carefully. Use the same content, sending patterns, and timing relative to recipient time zones. Changes in your testing methodology confound results. Document test conditions precisely to ensure valid comparison.