Masked Emails by 1Password - Taking control of your privacy and keeping your email private is now as easy as generating a strong password.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Throttle - Nov 5, 2016 - Welcome to the DOS throttle homepage.
MailClark - The Slack bot for external communications
InboxKitten - An open-source, disposable email service 💌
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