Will the email ecosystem become transparent to end users?

Limited transparency increase is likely. BIMI makes authentication visible through logos. Some MBPs expose sender reputation to recipients. User control over filtering increases.

Full transparency unlikely: complexity would overwhelm typical users, competitive dynamics prevent full disclosure, and detailed transparency enables gaming. Recipients benefit from better outcomes, not technical understanding.

Likely evolution: more visual trust signals (BIMI, verification badges), better user controls over preferences, and improved defaults protecting users. Transparency improves where it helps user decisions without requiring technical understanding.