About Formula Inbox
Formula Inbox is an email deliverability consultancy founded in 2024. We audit why your email misses the inbox, fix the causes, monitor placement so the fixes hold, and build email infrastructure for new programs. For years, we’ve watched companies struggle with their email deliverability, only to turn to unreliable software solutions that promise to unlock high inbox placement rates. Then those same companies end up in an unfavorable situation just a few weeks later.
Mission and achievements
Mission
Software promises high inbox placement but rarely keeps it there. Formula Inbox started in 2024 to give companies a better option: unbiased experts who find why email misses the inbox and fix the cause, not the symptom.
Achievements
Within 12 months, Formula Inbox grew into a full email deliverability consulting practice. Since then, we’ve helped more than 100 companies get their email back into the inbox. A few results:
Truitt Dill
Founder & Principal Deliverability Consultant
Meet the Founder
As the Founder and Principal Consultant of Formula Inbox, Truitt Dill has helped +100 companies bolster their email deliverability.
A seasoned marketing leader with over 10 years of experience, he has been tackling email deliverability issues throughout his career.
His work covers the problems that keep mail out of the inbox: Gmail blocks, Microsoft 365 spam filtering, domain reputation damage from cold outreach, and list-bombing attacks. He has escalated directly to Microsoft’s anti-abuse and deliverability teams to clear false-positive phishing flags, and he works with senders on any platform.
As the instructor of the top-rated email deliverability course on Udemy, Truitt has helped thousands of professionals conquer their email deliverability challenges. Now he would like to share his insights with you, whether that is an email deliverability audit, infrastructure setup, or a conversation with a deliverability expert.
Results From Our Clients
Since 2024
How We Work
Every fix starts from an audit, so we fix causes, not symptoms.
Launching a new program or setting up a new platform from scratch? That's an email infrastructure build, a separate service.
Expert Email
Deliverability Managers
Our highly experienced email deliverability managers uncover and resolve the issues that keep messages from their intended recipients. After a full audit and remediation, Formula Inbox clients see inbox placement rates above 90%, based on seed list tests that reflect their ideal customer profile. Are you ready to do the same?