September 28, 2025
8 min

Case Study

How Atrea unified e‑mail communication across 15 countries with Chillisign

Atrea, a leading European manufacturer of ventilation systems and solutions for healthy indoor environments, uses Chillisign to ensure professional e-mail signatures across its branches in 15 countries.

The original situation was characterized by non-uniform signatures — they used different code and behaved inconsistently when sending e-mails. They often broke on other devices or in different e-mail clients, which looked unprofessional and reduced the consistency of corporate communication.

Seamless implementation across branches

The deployment of Chillisign went smoothly in all countries at once. Employees did not have to handle any technical details. The signatures were applied automatically thanks to the Outlook synchronization app.

The IT department saved dozens of hours of manual work, and the marketing teams gained full control over the visual appearance of both signatures and banners.

Multilingual templates and local management

Signatures are available in multiple language versions and each branch has its own template. This not only preserves a unified visual style but also lets teams adapt banners for specific markets.

Signature management is handled directly by marketers. The Czech team covers the domestic branch, while the export team manages foreign markets. Thanks to this setup, each country can target its campaigns without compromising global brand consistency.

Banners as an effective marketing channel

Every e-mail also serves as ad space. Atrea uses banners to promote its products and events, and the results show high effectiveness:

  • Czech Republic: 160,000+ impressions, 1,000+ clicks
  • Export branches: 70,000+ impressions, 300+ clicks

Results

Chillisign eliminated previous technical issues with signatures breaking apart and ensured that all e-mails now look professional and consistent.

  • 205 signatures and 200 users unified under a single design
  • 15 countries served with one tool
  • The implementation went smoothly with no burden on employees
  • Multilingual templates and local banners for individual markets
  • Over 1.1 million banner impressions and 1,300+ clicks

“Chillisign helped us unify email signatures across all 15 countries. The rollout went smoothly, and employees didn’t have to deal with any complexities. Banners in signatures are a great marketing channel for us - they raise brand awareness, inform about key activities of each branch, and drive visitors to the website. I highly value the ability to centrally manage content for individual markets.”

Miroslav Řepka

Miroslav Řepka

Marketing Manager, Atrea

Before / After

Before: Signatures were not unified, differed in code, and often broke in various e-mail clients. They served only as a formal ending of the e-mail without any added value.

After: Professional, consistent signatures that display correctly on all devices and in all e-mail clients. Thanks to banners, they have also become a marketing channel through which Atrea promotes its products and activities across all markets.

Atrea Signature

IN CONCLUSION

Thanks to Chillisign, Atrea unified e-mail communication across all branches while retaining flexibility for local customization.

Result: a professional visual identity, technically flawless signatures, simple management for IT, and a measurable marketing impact with over one million banner impressions.

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