Roundcube - Web-based IMAP email client
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.
HEY - Email at its best, new from Basecamp.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.