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.
MailStore - MailStore Home - A 100% free single-private-user desktop solution
ActiveCampaign - Integrated email marketing, marketing automation, and small business CRM. Send beautiful newsletters, setup behavioral based automations, and benefit from sales automation.
MailSteward - MailSteward : The Ultimate E-mail Manager for Mac OS X
Pardot - Salesforce B2B marketing automation
Gmvault - Backup the emails in your Gmail account.