MailerQ

MailerQ, developed by Copernica, is an on-premise Mail Transfer Agent (MTA) designed specifically for sending and controlling large volumes of email. According to the vendor, MailerQ is suitable for businesses of all sizes, ranging from small businesses to large enterprises. It caters to a wide range of professions and industries, including Email Service Providers (ESPs), e-commerce platforms, banks and financial institutions, government institutes, and marketing agencies.

Key Features

Fast: According to the vendor, MailerQ is designed with a strong focus on performance, allowing a single instance to handle thousands of messages per second. It utilizes message queueing in memory and a multi-threaded non-blocking architecture, enabling it to handle high email volumes and deliver and monitor millions of emails per hour.

Flexible: MailerQ offers users the flexibility to send emails in various ways and extend its functionality. According to the vendor, it provides support for five different injection methods and allows the use of plugins. It also provides a REST API for easy integration and control. MailerQ utilizes open source components like RabbitMQ and MySQL/PostgreSQL, making it adaptable to different environments. Users can organize, control, and monitor groups of messages using tags, and integrate result data into other systems using JSON result objects.

Cutting edge: According to the vendor, MailerQ continuously brings out the latest improvements to stay ahead of the market. It aims to empower users to maximize email delivery operations, improve sender reputation, and achieve higher deliverability rates.

Ease of use: MailerQ stores all deliverability settings in a relational (SQL) database, allowing users to modify them on the fly from a web-based Management Console. According to the vendor, users have easy access to real-time performance insights and the ability to change settings on-the-fly. The system can be managed without the need to modify configuration files.

Insights: MailerQ provides extensive insight into real-time deliveries through the Management Console. According to the vendor, it offers result data per delivery in JSON format, including attempts chain and other relevant result properties. This allows users to integrate result data into local dashboards or monitoring tools.

Control: MailerQ provides granular control over delivery settings, including delivery rates, IP warmup schedules, message reroutes, and adaptation to server responses. Users can organize IPs into pools for different uses, such as shared and dedicated pools, and manually pause deliveries based on MTA IP, domain, or tag. Individual or groups of deliveries can be canceled, paused, failed, or rerouted in real-time based on tags.

IP Warmup: According to the vendor, MailerQ helps establish a legitimate sender reputation by gradually increasing sending speed and volume when using a new IP address. This aims to minimize deliverability issues and maximize email campaign results.

Email Throttling: MailerQ allows users to limit the number of emails sent to specific domains, servers, or ISPs. According to the vendor, this helps prevent temporary blocks and negative impact on reputation. It provides control over sending speed and volume for domains, IP addresses, and SMTP connections.

Email Throttle Schedules: MailerQ allows users to set up daily email throttle schedules for each domain or IP address. According to the vendor, this automation helps in the warm-up process while maintaining control. It allows for a gradual increase in message throughput based on domain or IP address.

Flood Patterns and Response Patterns: According to the vendor, users can set specific sending rules for recipient server errors, limit or pause sending to destinations that blocked them, and classify bounce responses to set suitable follow-up actions.