# Formula Inbox

> Inbox Placement = Revenue

- Canonical listing: https://agencysource.com/agencies/formula-inbox
- Categories: [Custom Software Development](https://agencysource.com/categories/custom-software-development), [Email & Lifecycle Marketing](https://agencysource.com/categories/email-marketing), [Cold Email](https://agencysource.com/categories/cold-email), [HubSpot Agencies](https://agencysource.com/categories/hubspot-agencies)
- Services: Email Marketing
- Team size: 2 - 9
- Hourly rate: $100 - $149 / hr
- Minimum project: $1,000+
- Founded: 2025
- Website: https://formulainbox.com
- Listing: Not yet claimed
- Agency Source rating: no Agency Source reviews yet

## About

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

---

Source: Agency Source, https://agencysource.com/agencies/formula-inbox. Ratings and reviews come only from reviews submitted and moderated on Agency Source; agencies cannot pay for rank.