Simple Poll - The easiest way to create polls in Slack
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
GitHub Polls - Polls for GitHub issues and readme
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
minipoll - Create simple shareable polls in seconds
MailClark - The Slack bot for external communications