Letterhead

The agentic newsletter platform

Miami, United States · Founded 2020 · $5.3M raised

Headquarters
Miami, Florida
Employees
11–50
Founded
2020
Business Model
B2B
Total Funding
$5.3M
Last Round
Series AOct 2025
Rounds
2

About

Letterhead is the all-in-one newsletter platform for publishers and enterprise brands managing multi-newsletter operations. Built by the team behind WhereBy.Us and The New Tropic, Letterhead spun out as its own company around 2020 and raised a $5.3M seed round. The platform handles the full business side of newsletters — editorial workflows, governance, delivery, analytics, advertising sales, subscriptions, and monetization tools — in a unified dashboard. It serves enterprise clients like Techstars and Patch.com who manage large newsletter portfolios. The platform distinguishes itself from individual creator tools by focusing on organizations running dozens to thousands of newsletters, offering centralized control with RSS integrations, social media content pulls, and advertiser management.

Summary

Letterhead is a Marketing Tech company based in Miami, United States, founded in 2020. It has raised $5.3M in total across 2 rounds, most recently a Series A round in Oct 2025. Investors include PeakSpan Capital, Las Olas Ventures and Reign Ventures.

Tech & App Stack

6 technologies & apps tracked

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Funding History

Series ASeries AOct 2025

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Investors

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