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Welcome to OpenMQTT ("the Service"). By creating an account, accessing the Service, or using any part of our platform, you agree to these Terms of Service ("Terms"). If you do not agree, do not use the Service.
OpenMQTT provides cloud-hosted MQTT brokers and related tools for building IoT projects, prototyping, automation, and non-critical data messaging.
You must:
If you create an account on behalf of a company, you confirm that you have authority to bind that entity.
You are responsible for:
You must notify us immediately if you suspect unauthorized access.
You may use OpenMQTT for:
You may not use OpenMQTT for:
We reserve the right to suspend accounts engaged in abuse or illegal behavior.
MQTT does not guarantee message delivery, ordering, or timeliness. Accordingly:
You are solely responsible for handling MQTT behavior in your devices and applications.
Depending on your subscription plan and settings, the Service may store:
We do not inspect or process MQTT payloads except to operate the Service you request. Retention periods vary by plan and are documented on the Pricing page.
We may modify, suspend or discontinue:
We will provide reasonable notice when practical.
Paid plans are billed through Stripe. By subscribing, you agree that:
If payment fails, your plan may be downgraded or suspended.
All software, branding, dashboards, visuals, source code, and platform tools are owned by us or our licensors. You may not reverse engineer, copy, or redistribute the Service.
We use trusted subprocessors including:
Use of the Service implies acceptance of their terms where applicable.
The Service is provided "as is" and "as available" without warranties of any kind. We explicitly disclaim:
You use the Service at your own risk.
To the fullest extent permitted by law:
This limitation applies regardless of legal theory.
You may close your account at any time. We may suspend or terminate accounts that:
Upon termination, your brokers and stored data may be deleted.
These Terms are governed by the laws of Sweden. Any disputes shall be resolved in the courts of Stockholm, unless mandatory law specifies otherwise.
Email: support@openmqtt.com
Last updated: November 24, 2025
This Privacy Policy explains how OpenMQTT ("we", "us", "our") collects, uses, stores and protects personal data in connection with the OpenMQTT cloud MQTT service ("the Service"). We are committed to processing personal data in compliance with the EU General Data Protection Regulation (GDPR).
The data controller is OpenMQTT. Email: privacy@openmqtt.com
If you are using OpenMQTT as a business customer and request a Data Processing Agreement (DPA), we may act as a data processor for MQTT payloads and device data.
We collect the minimum information necessary to operate a secure, reliable MQTT service.
When subscribing to a paid plan, billing information is processed by our payment processor: Stripe Payments Europe, Ltd. (Stripe Privacy Policy). We do not store full credit card numbers on our servers.
To operate your broker, we process:
By default, we do not store the contents of MQTT messages. Payloads may be stored only if you explicitly enable:
We may process device IP, reconnect attempts, authentication success/failure, and usage statistics (traffic, sessions, quotas). This helps ensure stability, performance, and abuse prevention.
We use cookies for login sessions, user preferences, and website analytics (anonymised). We may use tools such as Plausible Analytics, Google Analytics (optional, consent-based), and Cloudflare.
We process data exclusively for:
We do not sell or share data with advertisers.
We process personal data under the following legal bases:
To provide the Service: account creation, MQTT broker operation, dashboards, logs, flows, billing
Security monitoring, abuse prevention, analytics for product improvement
Optional analytics, optional logging of MQTT payloads, optional newsletters
Bookkeeping, anti-fraud safeguards, tax/VAT documentation
We only share data with trusted subprocessors necessary to operate the Service:
We ensure all subprocessors sign GDPR-compliant DPAs and operate under European data protection standards. We never sell personal data.
If data is transferred outside the EU/EEA, we ensure Standard Contractual Clauses (SCCs), supplemental safeguards, and GDPR-compatible protection levels. Most user data is stored within the EU (depending on region/plan).
We retain data only as long as necessary:
| Data Type | Retention |
|---|---|
| Account data | Until deletion |
| Billing data | 7–10 years (legal requirement) |
| Connection logs | 7–30 days (depending on plan) |
| Message payloads (if enabled) | 1–30 days (depending on plan) |
| Debug logs | 24–72 hours |
| Support tickets | Until resolved + 12 months |
You may request deletion at any time (see Section 9).
We implement industry-standard security measures:
However, no service is 100% secure. You are responsible for securing your IoT devices and client code.
You have the right to:
To exercise rights: privacy@openmqtt.com
The Service is not intended for children under 16. We do not knowingly collect data from children.
We may update this Privacy Policy. If changes are significant, we will notify you via email or in-app message.
For privacy inquiries: privacy@openmqtt.com
Last updated: November 24, 2025
This Acceptable Use Policy ("AUP") describes activities that are prohibited when using OpenMQTT ("the Service"). This AUP applies to all users and all MQTT brokers created under an account. By using the Service, you agree to this AUP.
The Service is designed for:
You must not use the Service for any activity that violates law, harms the platform, or puts people at risk.
You may NOT use OpenMQTT for:
OpenMQTT is not a real-time guaranteed or safety-certified service.
You must not use the Service to:
The following is strictly prohibited:
You must not:
Automation that may cause physical risk if messages are delayed, lost or duplicated is strictly forbidden. Examples:
You agree to comply with:
We may throttle, restrict or suspend accounts exceeding acceptable usage.
You must:
We may take the following actions:
We determine violations at our sole discretion.
We may update this AUP from time to time. Continued use of the Service constitutes acceptance of changes.
Questions about this AUP: abuse@openmqtt.com
⚠️ Important: This page explains our terms in plain language. It's here to help you understand what you're agreeing to – but the full Terms of Service are the legally binding document.
This page explains our terms in plain, human language.
The full Terms of Service is the legally binding version — this one exists because lawyers don't understand normal people.
We host MQTT brokers so you don't have to install Mosquitto, open ports on your router, fight with certificates, or reboot a Raspberry Pi that overheated in your shed.
We're built for:
If your project involves sensors, automations or something weird you built on your kitchen table, you're in the right place.
Super important:
Do NOT use OpenMQTT for:
We're here to make your projects easier — not to keep people alive. Please choose responsibly.
We aim for stability.
But MQTT is not magic, and the internet sometimes has… "personality."
Messages can be:
So don't connect your heart monitor or your missile launcher to this.
You must secure:
If your ESP32 starts spamming a million messages a second, that's on you (and we'll probably temporarily block it 😅).
Please avoid:
Play nice. Build cool things. Don't be that guy.
You can cancel your account whenever you want — no drama, no hidden fees.
If you leave, we'll delete your data according to our retention settings.
We're not an ad-tech company.
We don't sell or share your personal data with marketers or villains.
We never store your full payment info.
Stripe does that. They're good at it.
We're humans.
We answer like humans — not like robots pretending to be lawyers.