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Formula Inbox is a specialized email deliverability consultancy helping B2B SaaS companies, e-commerce brands, and marketing agencies get their emails where they belong — the inbox.
We diagnose and fix the infrastructure problems that silently kill email performance: misconfigured authentication (SPF, DKIM, DMARC), damaged sender reputation, blacklisted domains, and poorly managed sending infrastructure across platforms like HubSpot, Klaviyo, Customer.io, Mailgun, and SendGrid.
Our engagements range from one-time deliverability audits and dedicated IP transition plans to full infrastructure builds and ongoing monitoring retainers — tailored to where you are and what you need.
Services include:
- Deliverability audits & remediation
- DNS/authentication setup (SPF, DKIM, DMARC)
- Dedicated IP warming & transition planning
- List hygiene & sunsetting workflows
- Blacklist remediation
- Ongoing deliverability monitoring & retainers
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Min project size
$1,000+
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Hourly rate
$100 - $149 / hr
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Employees
2 - 9
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Year founded
Founded 2025
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