Three Red Boxes

Three Red Boxes is a fully managed cold email agency built on deliverability. We handle everything — infrastructure, targeting, and content — so B2B companies can focus on closing deals instead of figuring out why their emails are landing in spam.
Our approach starts with the foundation most agencies skip: dedicated sending domains, proper DNS authentication, and a 30-day warmup before a single prospect email goes out. From there we build targeted contact lists matched to your ideal customer profile, write email sequences that sound like a real person wrote them, and manage the campaigns ongoing — monitoring deliverability, optimizing messaging, and reporting weekly.
We specialize in B2B outreach across a wide range of industries including financial services, real estate, SaaS, legal, and more. If you're selling to businesses and have a clear ICP, we can likely help.