ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Nylas Mail - The Nylas Cloud API powers your application with email, calendar & contacts features. Built-in features for better email, calendar, and contact management.
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
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
Hooks Bot - Easiest way to stay up to date on anything through Messenger
MailClark - The Slack bot for external communications