Clearbit - Clearbit provides Business Intelligence APIs
GoZen.io - GoZen Growth is a user-friendly email marketing software with outcome-driven and industry-specific email templates. Get started and grow your business now.
Memotoo - Memotoo allows you to sync your data (contacts, calendar, tasks, .) with phones (iPhone, Android, Samsung, ..
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.