How often do MBPs roll out silent updates?

MBPs roll out silent updates frequently, often multiple times per week for algorithmic changes. Model retraining, weight adjustments, and minor threshold changes typically occur without announcement. Only major policy changes receive formal communication.

This frequent silent updating explains why deliverability can shift without obvious cause. Small incremental changes accumulate. A model weight adjustment that individually seems minor, combined with several others over weeks, can significantly change filtering behavior.

Expect constant evolution rather than stability punctuated by discrete changes. Continuous monitoring catches gradual shifts that announced policy changes alone would miss. The baseline for comparison should update regularly to reflect ongoing evolution.