Dispatchers
SMTP
Support Standard SMTP Email Servers
GMail
Use GMail server to send emails
MailGun
MailJet
Sendgrid Email
Chat
Slack
SMS
Twilio SMS
https://www.twilio.com/en-us/messaging/channels/sms ⧉
Other
WebPush
A push notification is an instant message that is "pushed" by an app in response to a certain event or process that is taking place in the app