How can misleading sender names violate best practices?

Misleading sender names violate best practices by deceiving recipients about message origin. Using names that imply personal relationship ("From: A Friend"), false authority ("From: Account Security"), or impersonation (using another brand's name) are problematic.

Such practices may violate regulations. CAN-SPAM prohibits deceptive header information. GDPR's transparency requirements conflict with misleading identification. Even where legal, these practices damage recipient trust.

Misleading names also trigger filtering. Spam frequently uses deceptive sender names, so patterns associated with deception trigger spam filters. Honest identification aligns with legitimate sender patterns that filters recognize.