Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates

ManyChat - ManyChat lets you create a Facebook Messenger bot for marketing, sales and support.

Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.

Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.

Nylas Mail - The Nylas Cloud API powers your application with email, calendar & contacts features. Built-in features for better email, calendar, and contact management.

iDoneThis - iDoneThis The fun, easy way to get stuff done. Every day we’ll email your team to ask, “What’d you get done today?” Just reply to our email. The next day, everyone gets an email with the team's accomplishments