Emailexpert has learned that Halon has partnered with Constant Contact, a strategic collaboration aimed at enhancing scalability, efficiency, and overall customer experience as both companies navigate rapid growth. This partnership reflects a trend among ESPs moving away from legacy MTA infrastructure.
Constant Contact has taken control of its email infrastructure, a shift that was previously part of a larger group decision. In February 2021, Clearlake Capital, which acquired Endurance International (the former owners of Constant Contact), announced a $400 million investment in a joint venture with Siris Capital. This led to Constant Contact becoming a standalone business again, with a focus on improving their email infrastructure to support their growth and scale.
Selection Criteria: Constant Contact outlined the following criteria for selecting a new infrastructure partner:
- Scalability: Ability to accommodate growing demand with a flexible architecture.
- Efficiency: Enhance performance for optimized email operations.
- Usability: Ensure an intuitive operating environment.
- Compliance: Uphold and adapt to modern delivery standards.
- Deliverability: Maintain and improve exceptional message deliverability rates.
Why Halon? After a thorough evaluation, Constant Contact chose Halon Engage for their email infrastructure. Halon’s ability to provide a scalable, flexible, and robust solution, along with their commitment to excellent customer support, made them the ideal partner for Constant Contact.
Smooth Transition: Halon conducted a detailed assessment of Constant Contact’s existing infrastructure to ensure a smooth transition. A collaborative migration plan was developed to minimize service disruption, with continuous support and training provided to ensure seamless adoption of the new infrastructure.
Results: The partnership has reportedly already led to significant improvements:
- Scalable Infrastructure: Halon’s technology handles increasing email traffic without compromising performance.
- Operational Efficiency: Constant Contact has seen a notable enhancement in operational efficiency.
- End-to-End Support: Comprehensive support from Halon ensures smooth implementation, ongoing management, and optimization.
- Email Delivery: Reliable email delivery has continued to improve, benefiting Constant Contact’s customers.
This strategic collaboration positions both Constant Contact and Halon for continued success in the evolving email marketing landscape, enabling them to serve a growing customer base and explore new market opportunities.
About Constant Contact
For over 25 years, Constant Contact has enabled small businesses to market themselves online. Founded in 1995, their mission has been to give small businesses a way to level the playing field against larger competitors. What started as email marketing has grown into a comprehensive digital marketing solution with all the tools small businesses need to grow and thrive.
While much has changed since Constant Contact began, their purpose remains the same, and their partnership with Halon marks the next chapter in their ongoing commitment to supporting small businesses.
About Halon
Halon, founded in Sweden in 2010, specialises in maximising email performance, reliability, and security for businesses worldwide. Their key products, Halon Engage and Halon Protect, cater to large-scale email senders and provide robust security for email infrastructure.
Halon Engage enhances flexibility and control for marketing and transactional emails, while Halon Protect safeguards against emerging threats, ensuring secure and reliable email communication. Halon’s commitment to innovation ensures their solutions remain future-ready and effective in meeting the evolving needs of their clients.






