No. 18 of 41 ·Transactional Email Software

QQueue

Web · Self-hosted · API

Freedom report

Two barsScore 6.3

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

QQueue is ranked #18 of 41 in transactional email software on Freedom251. It runs on API, Self-hosted, Web. There is a free plan.

QQueue plans and pricing

All plans

QQueue Core Free Self-hosted · pay for your own server and SMTP qqueue.app · 9 Oct 2026

Compared on transactional email software

Free plan: Yes
Delivery methods: both
Template options: both
Event webhooks: Yes

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The record

What it does: QQueue runs campaign, transactional, and manual email through one delivery pipeline using your SMTP server.
Campaigns: Campaigns support contact lists and dynamic segments, merge fields, A/B subject tests, and per-campaign open and click analytics.
Transactional email: Applications can send transactional email through a public HTTP endpoint, organization-scoped API keys, or the TypeScript SDK.
Scheduling: Email Studio supports immediate, one-time scheduled, and recurring cron-based sends with timezone-aware scheduling.
SMTP integrations: QQueue connects to standard SMTP servers, including Mailcow, Amazon SES, Postmark, Resend, and Brevo; provider-native APIs are not implemented.
Tracking and webhooks: It supports open and click tracking, signed outbound email-event webhooks, and a normalized inbound endpoint for provider bounce and complaint events.
Security: Saved SMTP credentials are encrypted at rest, and tracking links and webhook events use signed tokens or signatures.
Data control: QQueue is self-hosted, and its site says contacts, content, events, and API keys stay on infrastructure the operator controls.
License and status: QQueue Core is AGPL-3.0-only and described as a feature-complete self-hosted beta for early technical users.
Notable limits: Recurring sends are supported, but automated multi-step drip sequences are not.
Cloud availability: Managed QQueue Cloud is planned and not yet available.
Intended users: The documentation identifies developers, small teams, Mailcow operators, self-hosters, SaaS founders, indie hackers, and agencies as intended users.
Maker: The licensing page names Nana Aboagye as the copyright holder of QQueue Cloud and Nana Aboagye Boateng as the owner of QQueue trademarks.
Price from: Free

Where it ranks on Freedom251

Best Transactional Email Software in 2026#18 of 41

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Sources

qqueue.app· checked 9 Oct 2026
qqueue.app/docs/transactional-api· checked 9 Oct 2026
qqueue.app/docs/smtp-providers· checked 9 Oct 2026
qqueue.app/docs/faq· checked 9 Oct 2026
qqueue.app/docs/introduction· checked 9 Oct 2026
qqueue.app/docs/licensing· checked 9 Oct 2026