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Tech riderRev. 12 Oct 2026

Letter

Ch 1176.3of 189Email Marketing Software
  1. 1Runs onAPI, Web
  2. 2CostsFree plan · free trial
  3. 3Email automationYes
  4. 4Audience segmentationYes
  5. 5Native integrations6 integrations
5 lines stated Written from the maker's own pages: letter.app
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The Letter homepage

Overview

Letter is ranked #117 of 189 in email marketing software on Specifiction. It runs on API, Web. There is a free plan. A free trial is offered.

Letter plans and pricing

All plans
Free Free Free forever · no card required Up to 1,000 contacts · up to 5,000 emails sent/month · all features included · unlimited events tracked · includes a small “Powered by Letter” badge letter.app · 12 Oct 2026

Compared on email marketing software

Free plan
Yesletter.app
Email automation
Yesletter.app
Audience segmentation
Yesletter.app
Native integrations
6 integrationsletter.app

Facts

Purpose
Letter describes itself as an email marketing automation platform for SaaS, covering lead capture, event-driven sequences, broadcasts, and transactional email.letter.app · 12 Oct 2026
Forms
Embeddable forms support double opt-in and spam protection, and add contacts directly to Letter.letter.app · 12 Oct 2026
Sequences
Its visual sequence editor supports event, form-submission, and list-entry triggers, branching, waits, and test sends.letter.app · 12 Oct 2026
Broadcasts
Broadcasts can target segments built from contact traits, events, and lists, with a live audience preview.letter.app · 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 · 12 Oct 2026
Integrations
The integrations page lists Zapier, Facebook Lead Ads, Segment, PostHog, Make, and Tally.letter.app · 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 · 12 Oct 2026
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 · 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 · 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 · 12 Oct 2026
Paid billing
Paid plans are billed monthly with no contract, and users can cancel anytime.letter.app · 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 · 12 Oct 2026
Company location
The site footer identifies the company as Bromance Studio SRL and lists Brussels, Belgium.letter.app · 12 Oct 2026

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Where it ranks on Specifiction

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