Run using SMTP Notification

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This tutorial will show you how to integrate Monika with SMTP so you can receive notifications from Monika straight to your email.

Configuring the SMTP notification channel

In order to start using Google Mail as your Monika notification channel, you need to prepare these:

  1. One Google Mail Account
  2. A Monika configuration
  3. Patience

First, go to the Less secure app access section of your Google Account. You might need to sign in first using your Google account. Then, turn on the “Allow less secure apps” like so:

Now that we enabled the ‘Allow less secure apps’ option, it is time to create a Monika configuration. As an example, let’s use a configuration from our previous article: Be alerted when your authentication API is slow with Monika: A guide for chaining request

The configuration above will hit the /login endpoint with a JSON request body and hit an API using the token from the previous request’s response in the Authorization header. If you look closely in the notifications block, it only shows you desktop notifications when an alert is triggered. What we are going to do is to add a new notification channel, which is SMTP. Here is an example of an SMTP notification block:

\- id: unique-id-smtp
type: smtp
port: 587
username: SMTP\_USERNAME
password: SMTP\_PASSWORD
  • ID: Notification channel unique ID
  • Type: Notification type (e.g smtp, desktop, etc.)
  • Recipients: An array of email addresses that will receive the e-mail from Monika (e.g ["", ""] )
  • Hostname: The SMTP host that you will use for sending the email, in this case as we are going to be using Google Mail SMTP
  • Port: The port allowed to be used for sending mail in your SMTP host. Google Mail suggested that we use port 465 or 587
  • Username: Your SMTP username. Use your existing Google Mail email address
  • Password: Your SMTP password. Use your existing Google Mail password. If you have activated 2-Factor-Authentication (2FA), you need to create an App Password from your Account Settings and then use the app password.

Now that we know the structure of the SMTP notification block, it’s time to update our Monika configuration:

- id: unique-id-smtp
type: smtp
recipients: ["", ""]
port: 587
password: p455w0rd
- id: sample_login
name: Sample Login
- method: POST
email: ""
password: "cityslicka"
Content-Type: application/json
- query: response.time > 600
message: Login API Response time is {{ response.time }} ms, expecting less than 60>
- query: response.status != 200
message: Login API Status code is not 200. Please check the service status!
- method: GET
Authorization: Bearer {{ response.[0].data.token }}
- query: response.time > 500
message: Get User API Response time is {{ response.time }} ms, expecting less than>
- query: response.status != 200
message: Get User API Status code is not 200. Please check the service status!
- query: response.time > 10000
message: Please check your internet connection

Save the configuration file as monika.yml and run the configuration. When an alert is triggered, it should send a recovery or incident email to the recipients you have configured.

Congratulations! You can now send the alert notification using Google Mail SMTP!

PT Artha Rajamas Mandiri (Hyperjump) is an open-source-first company providing engineering excellence service. We aim to build and commercialize open-source tools to help companies streamline, simplify, and secure the most important aspects of its modern DevOps practices.

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