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Email security solutions fall into three basic categories: software-based, appliance-based and managed services (also known as SaaS - Software-as-a-Service). Key weaknesses of software-based and appliance-based solutions include: difficulties in ensuring the solution stays up-to-date; major commitment of in-house IT resources; and ongoing investment in additional software/hardware etc, substantially increasing total cost of ownership. By comparison, managed services offer many clear advantages: a clean email "Pipe"; round-the-clock, constantly updated real-time protection; freeing up of in-house IT resources; and lower costs. MessageLabs is the leading vendor of SaaS worldwide.
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