Debugging email_configs in Alertmanager

[Renan Campos]

Given that an Alertmanager receiver is properly configured with an email_configs clause, how can it be verified that the smtp server is receiving a valid call from Alertmanager?

[Brian Candler]

By looking in logs in your SMTP server
By checking if an E-mail is received

By running alertmanager with --log.level=debug and looking at its output

By looking at the metrics which alertmanager gives:

    curl localhost:9093/metrics | grep email