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Who is Excello?

Email protection

Excello is cybersecurity specialists, dedicated to taking care of your email security through Virusfree, our flagship service. Virusfree is a cloud-based, nextgen email security solution containing antivirus, antispam and other email threat intelligence services.

Cyber-security specialist

Established in 2006, our expert team of cyber security professionals is committed to continually evolving our email threat intelligence service to meet our customers’ needs and to defend businesses around the globe from cyber threats.


Virusfree is trusted by more than 7,000,000 users in industries ranging from financial services and healthcare to government departments. It checks hundreds of millions of emails for suspicious content every day. And it gives our customers real peace of mind.

What are we doing to improve cybersecurity for our customers?

We know that reliable email is essential to your business. And we also know that there are many ways for cyber attackers to steal sensitive data and money or threaten your company in other ways. Excello’s expert team is continually evolving new technologies and methods to stop malicious email entering your inbox or being sent from your computer. We carry out analysis of the domains and DNS services so that we can identify any vulnerability within your email infrastructure.

Supporting your business to reach your goals

If you require additional details or desire a more in-depth answer to a particular question, please don’t hesitate to contact us.

Write to us

Our workplace

Virusfree operates in the cloud for instant global access. Our offices are based in Prague in the Czech Republic.

Excello s.r.o.
Rybná 716/24
110 00 Praha 1 - Staré Město
Czech Republic

Trusted by


APB Plzeň

I’m satisfied with the Virusfree service. We noticed decrease of the number of unwanted spam emails and malicious attachments.


DPMO (DP Olomouc)

The change of the internal antispam solution to Virusfree solution was the right step. It saves finances, time, and... because of the service we could be less worried. We are completely satisfied with the service.


Magistrát města Kladna

Town Kladno is using the Virusfree as the antispam security service for 400 users. With Virusfree we solved... the problem with permanent testing of the old antispam solution and ensured good and quick email deliverability. Other big advantage is quick and superior technical support. Thanks to the support, our employees from IT department have more time for other tasks. Using the Virusfree was a right choice.


DB Schenker

We use the Virusfree service for seven years and we are still satisfied. We appreciate malware detection the most... Because of this we save a lot of money, which where use for the data recovery and for covering the money lost because of the recent ransomware attacks. Ransomware attacks were now eliminated by Virusfree. We also appreciate individual approach and technical consultations about the enhancing the email service security.



Virusfree service is simple and reliable. It also contains good customer support.


Česká zbrojovka

The change of antispam solution brought to us clear immediate improvement. Good customer support of the service and well-arranged... customer portal contribute to the thought that no one is sending spams to us and that no one is attacking the users privacy through email.


Aero vodochody

Seamless and fast deployment, easy management, professional support and most importantly - Virusfree works the way we expected.


Univerzita Karlova

The best solution from all the ones we tested. In addition with great support.

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Excello s.r.o

CRN: 27444899

VAT number: CZ27444899

Prague, Czechia

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