Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

MailChimp - MailChimp is the best way to design, send, and share email newsletters.

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

Elastic Email - Elastic Email is an all-in-one email delivery platform for both marketing and transactional email.

HelpScout - Help Scout is a simple, straightforward way to provide excellent support

Zoho Campaigns - Smart email marketing software that helps you reach your target audiences, engage in a personalized way, and grow your brand presence.