Product looks awesome! So for my understanding - to add email channel you have to forward an email to single monitored inbox, correct? What email protocols do you support?
It support ingresses for Mailgun, Mandrill, Postmark, and SendGrid. You can also handle inbound mails directly via the Exim, Postfix, and Qmail ingresses
ref: https://guides.rubyonrails.org/action_mailbox_basics.html