Email Verification on Google Sheets - An add-on for email verification directly in Google Sheets
Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
Verifier - Weed out disposable, non-existent domains or invalid emails.
SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.
Clearbit Salesforce Prospector - Quickly build targeted lead lists directly in Salesforce
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.