Data from D&B Hoovers comes straight from the D&B database, which is considered one of the most reliable sources of business intelligence, especially for mid- to large-sized businesses. D&B Hoovers doesn’t re-verify information at purchase like UpLead, but is generally considered to be reliable, as the D&B database is updated over five million times per day and is the primary source that other services often use for verification.
Salesfully validates business and consumer email addresses, and offers a refund of the monthly subscription fee when incorrect information is provided. Unlike D&B Hoovers, Salesfully doesn’t continue to update information if it changes after your purchase, but does use a variety of public and proprietary databases to verify information on a regular basis.
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