# MailerQ review (2026): is it worth €10,000? > Self-hosted mail transfer agent for high-volume email sending Checked Nov 13, 2026 · graded Nov 13, 2026 by ToolGPA. MailerQ is an on-premise mail transfer agent for companies that send large volumes of email from their own servers. It comes with a web management console, a REST API, per-provider throttling, IP warm-up schedules and bounce and feedback-loop handling. It is sold as a perpetual license per instance, priced in euros. - **Category:** Email Sending Services - **Made by:** Copernica BV - **Website:** https://www.mailerq.com - **Runs on:** Web - **Who should skip it:** Skip it if you want a hosted service, as it's software you install and run. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, MailerQ is a paid product with a free trial, starting at €10,000 one-time per instance, plus €2,000 a year for updates and support. - **Pricing model:** Free trial - **Free plan:** None. - **Free trial:** Free trial license available on request from the site; length not stated. | Plan | Price | What you get | | --- | --- | --- | | Regular | €10,000 one-time fee per instance | Perpetual license: 100K emails per hour, 10 domains, management console. Updates and support cost €2,000 a year. | | Enterprise | €25,000 one-time fee per instance | Perpetual license: unlimited emails per hour and domains, management console. Updates and support cost €5,000 a year. | Read from https://www.mailerq.com/pricing on Nov 13, 2026. Prices change, so confirm with MailerQ before buying. ## Key features - **Management console:** A web console shows delivery attempts, queues, error logs and statistics per IP, target domain or tag, and lets you change deliverability settings. - **Throttling and flood patterns:** Sets delivery rates for each source IP and target domain, and slows or pauses sending when a receiving server answers with rate-limit messages. - **IP warm-up schedules:** Throttle schedules define the sending rate to use on each day for a new IP address. - **Bounce and feedback processing:** Response patterns classify bounces, process feedback loops and trigger follow-up actions such as retrying or failing a delivery. - **Email authentication:** Supports DKIM, SPF, DMARC, TLS and ARC, according to the vendor. - **REST API and injection methods:** Messages can be injected in five ways, including AMQP, and a REST API can pause or cancel selected deliveries. ## Good for - Email service providers and platforms sending millions of messages a day - Teams that want to run their own sending infrastructure and IP reputation - Senders that need per-provider throttling and detailed delivery logs ## Worth knowing - It is software you install and run on your own servers; the vendor describes it as on-premise, and it uses RabbitMQ and a MySQL or PostgreSQL database. - Prices are in euros, per instance. Updates and support are an extra yearly charge of 20% of the license fee. - The Regular license caps sending at 100K emails per hour and 10 domains. - The pages do not name supported operating systems. ## ToolGPA grades **GPA: 1.6 out of 4**, graded Nov 13, 2026. MailerQ is an on-premise mail transfer agent for companies sending large volumes, with a web console, throttling, IP warm-up and bounce handling. It costs €10,000 one-time per instance plus €2,000 a year, and you run it on your own servers. - **Value for money: D.** €10,000 one-time per instance, plus €2,000 a year for updates and support. That's many years of the category's middle subscription at $15 a month, though it's a different kind of product from most of the category. - **Free plan and trial: D.** A trial license is available on request, with the length not stated. - **Features: B.** Management console, throttling, IP warm-up schedules, bounce and feedback handling, authentication and a REST API. Nothing in the listing is missing from the job of a mail transfer agent. - **Ease of use: D.** No store rating on record. It's installed on your own servers and uses RabbitMQ and a MySQL or PostgreSQL database. - **Platforms and integrations: C.** Software for your own servers with a REST API and injection methods. The pages don't name supported operating systems. These are ToolGPA's own grades. Graded from this listing, whose facts were read from MailerQ's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among email sending services - MailerQ's GPA of 1.6 is higher than 1 of the 50 other email sending services we grade, and level with 2. - It stands best on features (B, above 30 of 50) and worst on value for money (D, above 0). The category's chart of price against score: https://toolgpa.com/charts/email-sending ## Keep it, or make your own? **Keep it.** To replace MailerQ you would be making mail servers with a good name among inbox providers. That is not a weekend's work, with an AI app builder or without one. That makes this kind of software worth paying for, not this one in particular: 47 of the 50 other email sending services grade higher. It costs $11,172, paid once. - You could not: Mail servers with a good name among inbox providers. - You could not: A network of real inboxes that open and answer your emails. - You could not: Reading the reports inbox providers send about your domain. - You could not: It plugs into other products, RabbitMQ, MySQL and PostgreSQL among them, and has an API. - You could not: The depth: we grade its features B, which means it covers the whole job. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with RabbitMQ, MySQL, PostgreSQL **Tags:** Transactional email, Self-hostable, Inbox warm-up, Public API, DMARC ## Alternatives - [KumoMTA](https://toolgpa.com/tools/kumomta): Open-source mail server for high-volume, self-run email sending. [Compare](https://toolgpa.com/compare/kumomta-vs-mailerq) - [Bird Email](https://toolgpa.com/tools/sparkpost): SparkPost's successor: Bird's email API, paid from a prepaid balance. [Compare](https://toolgpa.com/compare/mailerq-vs-sparkpost) - [SocketLabs](https://toolgpa.com/tools/socketlabs): Email delivery over SMTP or API, with built-in analytics. [Compare](https://toolgpa.com/compare/mailerq-vs-socketlabs) - [Mailgun](https://toolgpa.com/tools/mailgun): Email API and SMTP relay for developers, with list validation. [Compare](https://toolgpa.com/compare/mailerq-vs-mailgun) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://www.mailerq.com/pricing - https://www.mailerq.com/ - https://www.mailerq.com/features - https://www.mailerq.com/why-mailerq Page: https://toolgpa.com/tools/mailerq Listed by ToolGPA (toolgpa.com).