Kyber for Slack - All-in-one Slack app: tasks, standups, polls, surveys & more
SendLater - Email scheduler for Mac Mail.
Huminos - Free OKR and Growth acceleration platform for Startups
The Top Inbox - The Top Inbox for Gmail helps to schedule emails to be sent later, set reminders in the inbox and follow up with email sequences.
Meetingbird - Powerful meeting scheduling and notes — right in your calendar
EmailPlayground - EmailPlayground provides solution to schedule and send emails with ease.