Letterhead

Paid APIWeb

What Letterhead is

Letterhead offers Studio, a newsletter production layer for existing email service providers, and Suite, a unified email operating platform. Studio includes drag-and-drop editing, global and lockable templates, content curation, and approval flows. Its intelligence tools report content performance and audience engagement and provide recommendations based on billions of sends. Revenue tools handle direct and programmatic ads, house promotions, and conversion calls to action. Suite adds a unified reader view, audience segments, journeys, triggered flows, and preference management. It also supports newsletter and transactional delivery, dedicated IP pools, migration and warmup, and deliverability reporting and repair. Letterhead lists more than 30 integrations, including Mailchimp, Iterable, Braze, HubSpot, WordPress, Shopify, and Google Ad Manager. Developers can use a versioned REST API, webhooks, Zapier, and per-tenant MCP servers. The platform describes SAML single sign-on, workspace-scoped role access, and audited SOC 2 controls. Letterhead says it handles GDPR and CCPA access, deletion, and export requests on time and does not sell audience data or use it to train models. Pricing is on request and based on newsletter count and audience size.

Who it suits

Suite is positioned for companies managing many newsletters and audiences that want to grow and convert their audience into revenue on one platform. Studio may suit teams that already use an ESP or CRM and want added production and revenue tools.

What it does well

Studio includes editing, templates, curation, and approvals.
Suite supports audience segments, journeys, and triggered flows.
Revenue tools cover direct and programmatic ads.
Offers a versioned REST API, webhooks, and Zapier.
Lists more than 30 integrations.

What to know first

Studio requires an existing ESP or CRM for sending.
Pricing is on request and based on newsletters and audience size.
Letterhead is based in Miami, with a U.S.-distributed team.

Limits

Studio requires an existing ESP or CRM for sending; customers continue to send through their current system. Pricing for both Studio and Suite depends on newsletter count and audience size.

Plans

Plan	Billed and limits	Price
Letterhead Studio	Price based on number of newsletters and audience size	On request
Letterhead Suite	Price based on number of newsletters and audience size	On request

As tryletterhead.com lists them, read 10 Oct 2026. The maker's own page has the final word.

Getting started

Visit https://www.tryletterhead.com/.
Choose Letterhead Studio or Letterhead Suite.
For Studio, use an existing ESP or CRM for sending.
Arrange onboarding for template migration, account setup, and integration testing.

Verdict

Letterhead gives newsletter teams a choice between adding a production layer to their current sending system and consolidating more operations in Suite. The key distinction is that Studio relies on an existing ESP or CRM for delivery, while pricing for both plans is quoted on request.

Questions

How much does Letterhead cost?

Pricing is available on request. The price is based on the number of newsletters and audience size.

What are the differences between Studio and Suite?

Studio adds a newsletter layer to an existing ESP or CRM. Suite is a unified email operating platform with audience tools and newsletter and transactional delivery.

Can Studio send newsletters on its own?

Studio requires an existing ESP or CRM for sending. Customers continue to send through their current system.

What platforms does Letterhead support?

Letterhead lists web and API platforms.

What integrations does Letterhead offer?

The integrations page lists more than 30 products, including Mailchimp, Iterable, Braze, HubSpot, WordPress, Shopify, and Google Ad Manager.

What security and privacy measures does Letterhead describe?

It describes SAML single sign-on, workspace-scoped role access, and audited SOC 2 controls. It says audience data is never sold or used to train models.

Facts from Letterhead's own pages

Analytics: Its intelligence tools report content performance and audience engagement and provide recommendations based on billions of sends. · tryletterhead.com, 10 Oct 2026
API: The platform offers a versioned REST API, webhooks, Zapier, and per-tenant MCP servers. · tryletterhead.com, 10 Oct 2026
Headquarters: Miami, Florida, United States · tryletterhead.com, 28 Sept 2026
HQ: Letterhead says it is based in Miami, with its team distributed across the United States. · tryletterhead.com, 10 Oct 2026
Integrations: The integrations page lists 30+ products, including Mailchimp, Iterable, Braze, HubSpot, WordPress, Shopify, and Google Ad Manager. · tryletterhead.com, 10 Oct 2026
Monetization: Revenue tools manage direct ads, programmatic ads, house promotions, and conversion calls to action across newsletters. · tryletterhead.com, 10 Oct 2026
Notable limit: Studio requires an existing ESP or CRM for sending, with customers continuing to send through their current system. · tryletterhead.com, 10 Oct 2026
Privacy: Letterhead says GDPR and CCPA requests for access, deletion, and export are handled on time, and audience data is never sold or used to train models. · tryletterhead.com, 10 Oct 2026
Product: Letterhead offers Studio, a newsletter layer for existing ESPs, and Suite, a unified email operating platform. · tryletterhead.com, 10 Oct 2026
Production: The email builder includes drag-and-drop editing, global and lockable templates, content curation, and approval flows. · tryletterhead.com, 10 Oct 2026
Security: The platform page describes SAML single sign-on with workspace-scoped role access and documented, audited SOC 2 controls. · tryletterhead.com, 10 Oct 2026
Sending: Suite supports newsletter and transactional delivery, dedicated IP pools, migration and warmup, and deliverability reporting and repair. · tryletterhead.com, 10 Oct 2026
Suite audience tools: Suite provides a unified reader view, segments, journeys, triggered flows, and preference management. · tryletterhead.com, 10 Oct 2026
Support: Studio onboarding includes template migration, account setup, and integration testing, with a dedicated customer success manager and subject-matter experts for ongoing support. · tryletterhead.com, 10 Oct 2026
Who it serves: Suite is positioned for companies with many newsletters and audiences that want to grow and convert audience into revenue on one platform. · tryletterhead.com, 10 Oct 2026

Where Letterhead stands on Freedom251

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