Email is one of the most popular ways for businesses to reach potential customers and make sales. And yet email is still vulnerable to unwanted messages called spam, which adversely affect business productivity. What’s worse, spam has been known to be a common means for phishing, data breaches, and malware that can cripple systems.

Accounting firms have built their practices on being trusted with sensitive client information — tax returns, financial statements, personal information, and bank account information — that is stored and managed on a day-to-day basis in those firms’ computer systems.