QQueue
QQueue: A developer-focused self-hosted queue for transactional email and campaigns. Ranked #16 of 38 in Transactional Email Software by our editors (7.4/10); pricing: Free plan; best for developers building an open-source email queue.
At a glance
- Editor score7.4 / 10
- PricingFree plan
- Best forDevelopers building an open-source email queue
- Free planYes
- Paid fromNone
- Delivery methodsBoth
- Facts checked20 Sep 2026
Where it wins
- Transactional API with API-key authentication and a TypeScript SDK
- Templates, campaigns, scheduling, tracking, and contact segmentation
- Queues, retries, suppression, failure monitoring, and signed webhooks
Where it doesn't
- Self-hosted beta requires operator-managed infrastructure
- Managed cloud offering is planned but unavailable for signup
- SMTP-provider configuration adds operational responsibility
Our verdict on QQueue
QQueue is an open-source, self-hosted email platform for developers building transactional email workflows and campaign delivery. It combines a transactional HTTP API with API-key authentication, a TypeScript SDK, SMTP-provider delivery, saved templates, contacts, lists, segmentation, scheduled sends, recurring sends, and event tracking. The core platform is licensed under AGPL-3.0 and can be self-hosted for transactional messages and campaigns.
The main commitment is operational rather than licensing-based. QQueue is free to self-host, but it is currently presented as a beta, so the operator is responsible for running the platform and controlling the SMTP-provider infrastructure. Delivery can connect with Mailcow, Amazon SES, Postmark, Resend, Brevo, or SMTP. A managed cloud offering is planned, but it is not available for signup, making QQueue better suited to teams comfortable managing their own deployment and email delivery configuration.
Its strongest area is the combination of queue operations and application-facing email features. Developers get retries, failure monitoring, bounce and unsubscribe suppression, signed outbound webhooks with retries, variable-based templates, campaigns, scheduling, and open and click tracking in one system. Choose QQueue if self-hosting, source availability, provider choice, and control over delivery are priorities. An alternative may fit better for organizations seeking an immediately available managed service or a lower-operations path to transactional email.
Your product? Our editors can test QQueue in depth and publish a review, labelled as paid · from $99/mo →
QQueue pricing
QQueue fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Delivery methods | Both |
| Template options | Both |
| Event webhooks | Yes |
| Delivery log retention | Not verified |
| Dedicated IP option | Not verified |
| Monthly send limit | Not verified |
| Deployment | Self-hosted |
| Platforms | Web |
| Support | Docs |
| Built for | Small business, Mid-market (editorial estimate) |
| Integrations | 6 integrations: Mailcow, Amazon SES, Postmark, Resend, Brevo, SMTP |
| Pricing | Free plan |
| Website | qqueue.app |
| Facts checked | 20 Sep 2026 |
QQueue integrations
QQueue lists 6 integrations on its own site.
- Mailcow
- Amazon SES
- Postmark
- Resend
- Brevo
- SMTP
Alternatives to QQueue
- Twilio SendGridA developer-focused email service with APIs, SMTP, templates, webhooks, and inbound parsing.9.2
- PostmarkA focused email delivery service for teams separating transactional and broadcast traffic.8.8
- Mailchimp Transactional (formerly Mandrill)A paid transactional email service with API, SMTP, templates, and volume pricing.8.7
Used QQueue? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used QQueue for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
QQueue is listed in our Transactional Email Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/qqueue/"><img src="https://www.itechguides.com/best/badge/qqueue.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Guides on transactional email software
- Choose a Transactional Email Service That Fits Your Delivery Needs in 2026Oct 2026
- Transactional Email Service Alternatives: 7 Welcome Email API Signals for StartupsOct 2026
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.
Last updated · How we research and update