MailChimp - MailChimp is the best way to design, send, and share email newsletters.
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.
ActiveCampaign - Integrated email marketing, marketing automation, and small business CRM. Send beautiful newsletters, setup behavioral based automations, and benefit from sales automation.
EZ Texting - EZ Texting provides SMS marketing solutions to businesses of all sizes.
Pardot - Salesforce B2B marketing automation
SimpleTexting - SimpleTexting offers SMS and text marketing services for companies of all sizes.