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Letter

Plans and prices

Free

Free

Up to 1,000 contacts · up to 5,000 emails sent/month · all features included · unlimited events tracked

Every plan, in full

On the record

AI assistants
Letter offers a remote MCP server for Claude, ChatGPT, and GitHub Copilot with OAuth and read-only or read-and-write access modes.letter.app · read 12 Oct 2026
Broadcasts
Broadcasts can target segments built from contact traits, events, and lists, with a live audience preview.letter.app · read 12 Oct 2026
Company location
The site footer identifies the company as Bromance Studio SRL and lists Brussels, Belgium.letter.app · read 12 Oct 2026
Custom plans
Letter invites users with more than 500,000 contacts or needs for custom routing, dedicated IPs, or SLAs to request custom pricing.letter.app · read 12 Oct 2026
Data and billing limits
Pricing is based on the number of contacts stored, with unlimited events; the free plan is limited to 5,000 emails per month.letter.app · read 12 Oct 2026
Developer access
Letter provides a REST API, CLI, typed SDKs, webhooks, and SDK examples for Node.js, Python, and Ruby.letter.app · read 12 Oct 2026
Email automation
Yesletter.app · read 20 Sep 2026
Forms
Embeddable forms support double opt-in and spam protection, and add contacts directly to Letter.letter.app · read 12 Oct 2026
Integrations
The integrations page lists Zapier, Facebook Lead Ads, Segment, PostHog, Make, and Tally.letter.app · read 12 Oct 2026
Native integrations
6letter.app · read 20 Sep 2026
Paid billing
Paid plans are billed monthly with no contract, and users can cancel anytime.letter.app · read 12 Oct 2026
Paid trial
Every paid plan starts with a 14-day free trial with no card up front; afterward, the account drops back to the free plan if the user does not continue.letter.app · read 12 Oct 2026
Purpose
Letter describes itself as an email marketing automation platform for SaaS, covering lead capture, event-driven sequences, broadcasts, and transactional email.letter.app · read 12 Oct 2026
Audience segmentation
Yesletter.app · read 20 Sep 2026
Sequences
Its visual sequence editor supports event, form-submission, and list-entry triggers, branching, waits, and test sends.letter.app · read 12 Oct 2026
Transactional email
Transactional email can be sent with a POST /v1/send API call using existing HTML and the same verified domain and delivery infrastructure as marketing email.letter.app · read 12 Oct 2026

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