SendX.io - SendX (https://sendx.io) provides remarketing and retargeting tools for web businesses. You can use popups, landing pages, email, web push notification, automation workflows and FB / Google retargeting to drive more revenue.
Carrd - Simple, responsive one-page site creator.
Nova Inbox - Personalize emails in seconds, right from your inbox
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Mailblast - Email marketing on a budget using Amazon SES
GetChat.App - Add WhatsApp chat to your website for free