EmailBison vs Overloop: Top Agency Cold Email Tool in 2026?
Cold email infrastructure determines whether agencies land in the inbox or disappear into spam folders. Agencies sending 100K+ emails per month in 2026 face a critical choice between two fundamentally different approaches: dedicated email infrastructure and multichannel AI-driven automation. EmailBison operates as a private cold email infrastructure platform built for agencies at scale, priced at a flat $599 per month with unlimited sending.