alertmanager.yml

global:

templates:
- '/etc/alertmanager/*.tmpl'
# The root route on which each incoming alert enters.
route:
  # default route if none match
  receiver: alert-emailer

  group_by: ['alertname', 'priority']

  # All the above attributes are inherited by all child routes and can
  # overwritten on each.

receivers:
- name: alert-emailer
  email_configs:
  - to: 'receiver1@example.com'
    send_resolved: false
    from: 'sender@example.com'
    smarthost: 'smtp.example.com:587'
    auth_username: 'sender@example.com'
    auth_password: 'IamPassword'
    auth_secret: 'sender@example.com'
    auth_identity: 'sender@example.com'
  - to: 'receiver2@example.com'
    send_resolved: false
    from: 'sender@example.com'
    smarthost: 'smtp.example.com:587'
    auth_username: 'sender@example.com'
    auth_password: 'IamPassword'
    auth_secret: 'sender@example.com'
    auth_identity: 'sender@example.com'