Formula Inbox

Email Deliverability Consultant

7901 4th Street North, STE 300 St. Petersburg, Florida, New York 33702, United States

https://www.formulainbox.com

Formula Inbox Overview

Year Founded: 2025

Employees: Under 49

Minimal Budget: Under $1,000

Average Hourly Rate: $150/hr

Formula Inbox is a services-only email deliverability consultancy based in St. Petersburg, Florida, serving B2B clients worldwide. We do one thing and do it well: get your email into the inbox instead of the spam folder.

Deliverability is not a single setting you flip on. It is a system built from authentication, sending infrastructure, domain reputation, and content. Most companies lose inbox placement because these pieces are misconfigured or working against each other. We find exactly where your email is failing and fix it.

We are ESP-agnostic, so we work across Google Workspace, Microsoft 365, and every major sending platform rather than pushing you toward one tool. We also treat cold outreach, marketing email, and transactional email as three separate programs, because each has different rules, different risks, and a different standard for what good looks like. Handling them the same way is how senders end up blocklisted.

Our work covers deliverability audits, authentication setup (SPF, DKIM, DMARC, BIMI, MTA-STS, DNSSEC), domain and mailbox infrastructure builds, warm-up strategy, inbox placement diagnostics, and ongoing monitoring. We take fixed-scope audits, monthly retainers, and white-label engagements for agencies that need a deliverability partner behind their own brand.

To date we have delivered over 50 million emails for 25+ clients across industries. If your open rates are dropping, your cold campaigns are stalling, or your transactional email is landing in spam, we can tell you why and rebuild it the right way.

Formula Inbox Portfolio

B2B Email Marketing

Email Deliverability Specialist for Newsletter Setup (SPF/DKIM/DMARC)

Entertainment

$5K - $20K

2 Months

2025

Formula Inbox Services

Industries

Automotive
Corporate Services
Boutique
Design
eCommerce
Beauty
Dental
Fashion
Construction
Arts

Client Types

Small Businesses
Medium Businesses

Email Marketing Expertise

AI Email Marketing
B2B Email Marketing
CRM Emailing
Cold Email
Email Design
Email Marketing Software
Experience Management
PR Outreach

Formula Inbox Clients

100yards

MatthewJCrawley

ArtHaus

Entrusted Legacy

Buchman Book Works

First Choice Background

Stonemill

Fourthwall

Formula Inbox Team Bios

Truitt Dill

Founder and Principal Deliverability Consultant

As the Founder and Principal Consultant of Formula Inbox, Truitt Dill has helped dozens of companies bolster their email deliverability. A seasoned marketing leader with over 10 years of experience, I've been tackling email deliverability issues throughout my career.