MailChimp - MailChimp is the best way to design, send, and share email newsletters.
HubSpot CRM - Free CRM software for small businesses.
BirdSend - BirdSend is the email marketing software that allows you to create beautiful and appealing marketing campaigns, and achieve the desired results.
Less Annoying CRM - A simple customer relationship manager made just for small businesses. Manage contact info, track leads, and never miss a follow-up.
SmartEngage - Cross-channel autoresponder for marketing automation
Keap - Grow Sales. Save Time. Get Organized.