Noto - Email yourself. Fast.
Timy - Best way to send scheduled messages in Slack
fwrdto.me - Send web pages to your email inbox in just one click
SKEDit Scheduling App - SKEDit Scheduling App is a rich-featured scheduling application that entitles you to automate your messages by scheduling your WhatsApp messages, SMS, e-mails, post, and set call reminders to experience a healthy or tension-free lifestyle.
Captio - Captio enables companies and their employees an improved control of their expenses and the discovery of new savings opportunities.
Slater by Convergely - Schedule your Slack messages now, post them later