Kit CRM - A CRM for your Facebook page
Templates by Email Monster - Hundreds of free, responsive email templates. Pick and edit.
Streak for Mobile - The CRM for Gmail
MJML - The open source framework for responsive emails
Sitefly - Create beautiful websites using your Facebook business page.
Stripo - Stripo is an all-in-one email design platform. We enable our clients to build emails of any complexity, including interactive AMP emails, really fast and easy.