WikiPro - All-in-one Business to Customer Communication
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Respond Flow - The Mailchimp of SMS
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Proximiti MessagePro - MessagePro services include business SMS, secure messaging, interactive messaging, BOTs, scheduled messaging, and fax. Solutions for SMB and enterprise.
EZ Texting - EZ Texting provides SMS marketing solutions to businesses of all sizes.