Letterhead

Letterhead is the Newsletter Operating System for brands that publish at scale. Teams use Letterhead to bring together content from CMSs, RSS feeds, and saved sources, collaborate on curation and approvals, assemble editions with consistent layouts, and govern quality across an entire newsletter portfolio.

Letterhead replaces fragmented tools and manual processes with a single system of record for newsletter management. Editorial, marketing, and revenue teams can standardize templates and modules, enforce brand and QA standards, coordinate sponsorship placements, track what shipped and who approved it, and maintain visibility across performance at the portfolio level.

Built for organizations running multiple newsletters across audiences, regions, and business lines, Letterhead scales production without sacrificing speed or control for brands including Townsquare Media, iNFOnews, Global Post, and Techstars.

Letterhead complements Iterable by managing upstream newsletter production at scale, while Iterable handles sending, lifecycle, and optimization.

• Scale production without slowing delivery: teams plan, build, and govern newsletters in Letterhead, then hand off finished editions to Iterable for sending, scheduling, and lifecycle execution.
• Improve quality and consistency across programs: Letterhead standardizes templates, approvals, QA, and sponsorship placement upstream, reducing errors and last-minute fixes before Iterable handles distribution and optimization.
• Operate portfolios, not just single sends: Letterhead provides visibility and control across multiple newsletters and teams, while Iterable powers audience targeting, experimentation, and performance at send time.