
The LetterStack Podcast · 2025-09-22 · 37 min
Hitting the primary inbox (not spam or promotions) is make-or-break for every newsletter and cold-email campaign. In Episode 4 of the LetterStack Podcast, Renga sits down with Anthony Baltodano, founder of Mission Inbox and a decade-long deliverability expert, to unpack the exact tech and tactics that keep your emails landing where they belong.