- Add notifications for campaign state change
- Add notifications for import state change
Related changes.
- Add a new 'templates' directory with HTML templates
- Move the static campaign template as a .tpl file into it
- Change Messenger.Push() to accept multiple recipients
- Change exhaustCampaign()'s behaviour to pass metadata to admin emails
When a campaign exceeds N number of message send errors, for instance
SMTP errors, it is now auto-paused until there is manual intervention.
For this, the master goroutine in runner.Run() that was synchronising
between the tick based DB scanner and subscriber fetching has been
split into two. A new queue aggregates send errors from workers
again a threshold after which the campaign is paused.
