WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Clearbit - Clearbit provides Business Intelligence APIs
NEWOLDSTAMP - Email signature generator
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Exclaimer - Exclaimer is the industry's leading provider of email signature solutions, empowering businesses to unlock the potential of email as a key digital advertising channel.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.