Freedom251 › Transactional email services
QQueue

What QQueue is
QQueue brings campaign, transactional, and manually sent email into a single pipeline that uses an operator’s SMTP server. Campaign tools include contact lists, dynamic segments, merge fields, A/B subject tests, and analytics for opens and clicks. Applications can send transactional messages through a public HTTP endpoint, organization-scoped API keys, or a TypeScript SDK. Email Studio handles immediate delivery, one-time scheduled sends, and recurring cron-based sends with timezone-aware scheduling. QQueue works with standard SMTP servers such as Mailcow, Amazon SES, Postmark, Resend, and Brevo; it does not implement provider-native APIs. It supports open and click tracking, signed outbound event webhooks, and an inbound endpoint for bounce and complaint events. QQueue is self-hosted, and its site says contacts, content, events, and API keys remain on infrastructure the operator controls. Core is AGPL-3.0-only and described as a feature-complete beta for early technical users. The plan is free, though operators pay for their own server and SMTP. Multi-step automated drip sequences are not supported; managed QQueue Cloud is planned, not available.
Who it suits
QQueue is aimed at developers, small teams, Mailcow operators, self-hosters, SaaS founders, indie hackers, and agencies that want to manage several kinds of email through their own SMTP setup. It suits operators comfortable running self-hosted beta software.
What it does well
- Campaigns include segments, merge fields, and A/B subject tests.
- Transactional sending is available by endpoint, API key, or SDK.
- Supports immediate, scheduled, and recurring timezone-aware sends.
- Self-hosted data remains on operator-controlled infrastructure.
- Free plan; Core is AGPL-3.0-only.
What to know first
- Operators pay for their own server and SMTP.
- Provider-native APIs are not implemented.
- No automated multi-step drip sequences.
- Managed QQueue Cloud is not yet available.
Limits
QQueue Core is self-hosted, so operators pay for their own server and SMTP. Recurring sends are available, but automated multi-step drip sequences are not; managed QQueue Cloud is not yet available.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| QQueue Core | Self-hosted · pay for your own server and SMTP | Free |
As qqueue.app lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://qqueue.app/.
- Use QQueue Core, the free self-hosted plan.
- Arrange a server and SMTP service to run it.
- Connect a standard SMTP server such as Mailcow, Amazon SES, Postmark, Resend, or Brevo.
- Use the web, API, or self-hosted platform route.
Verdict
QQueue combines campaign and transactional email with self-hosted control, tracking, and webhook support. Its beta status, SMTP requirements, and lack of multi-step drip automation are important constraints to weigh.
Questions
Is QQueue free?
Yes. QQueue Core is listed as free, but operators pay for their own server and SMTP.
Can I use it without hosting it myself?
Managed QQueue Cloud is planned and is not yet available.
Which SMTP providers does QQueue support?
It connects to standard SMTP servers, including Mailcow, Amazon SES, Postmark, Resend, and Brevo. Provider-native APIs are not implemented.
Is QQueue open source?
QQueue Core is licensed AGPL-3.0-only.
What email scheduling does it support?
It supports immediate sends, one-time scheduled sends, and recurring cron-based sends with timezone-aware scheduling. Automated multi-step drip sequences are not supported.
Who is named as the maker?
The licensing page names Nana Aboagye as the copyright holder of QQueue Cloud and Nana Aboagye Boateng as the owner of QQueue trademarks.
Facts from QQueue's own pages
- Campaigns
- Campaigns support contact lists and dynamic segments, merge fields, A/B subject tests, and per-campaign open and click analytics. · qqueue.app, 9 Oct 2026
- Cloud availability
- Managed QQueue Cloud is planned and not yet available. · qqueue.app, 9 Oct 2026
- Data control
- QQueue is self-hosted, and its site says contacts, content, events, and API keys stay on infrastructure the operator controls. · qqueue.app, 9 Oct 2026
- Delivery methods
- both · qqueue.app, 20 Sept 2026
- Event webhooks
- Yes · qqueue.app, 20 Sept 2026
- Free plan
- Yes · qqueue.app, 20 Sept 2026
- Intended users
- The documentation identifies developers, small teams, Mailcow operators, self-hosters, SaaS founders, indie hackers, and agencies as intended users. · qqueue.app, 9 Oct 2026
- License and status
- QQueue Core is AGPL-3.0-only and described as a feature-complete self-hosted beta for early technical users. · qqueue.app, 9 Oct 2026
- Maker
- The licensing page names Nana Aboagye as the copyright holder of QQueue Cloud and Nana Aboagye Boateng as the owner of QQueue trademarks. · qqueue.app, 9 Oct 2026
- Notable limits
- Recurring sends are supported, but automated multi-step drip sequences are not. · qqueue.app, 9 Oct 2026
- Scheduling
- Email Studio supports immediate, one-time scheduled, and recurring cron-based sends with timezone-aware scheduling. · qqueue.app, 9 Oct 2026
- Security
- Saved SMTP credentials are encrypted at rest, and tracking links and webhook events use signed tokens or signatures. · qqueue.app, 9 Oct 2026
- SMTP integrations
- QQueue connects to standard SMTP servers, including Mailcow, Amazon SES, Postmark, Resend, and Brevo; provider-native APIs are not implemented. · qqueue.app, 9 Oct 2026
- Template options
- both · qqueue.app, 20 Sept 2026
- 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. · qqueue.app, 9 Oct 2026
- Transactional email
- Applications can send transactional email through a public HTTP endpoint, organization-scoped API keys, or the TypeScript SDK. · qqueue.app, 9 Oct 2026
- What it does
- QQueue runs campaign, transactional, and manual email through one delivery pipeline using your SMTP server. · qqueue.app, 9 Oct 2026
Where QQueue stands on Freedom251
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