The mail module can be used to send email. The ansible-doc mail command can be used to show the Ansible documention on the mail module.

In this example, an email will be sent to john.doe@example.com.

- mail:
    host: "smtp.example.com"
    port: "587"
    secure: "starttls"
    username: "your_username"
    password: "your_password"
    from: "no-reply@example.com"
    to: "John Doe <john.doe@example.com>"
    cc: "Jane Doe <jane.doe@example.com>"
    subject: "Example Subject"
    body: "Line one \n Line two \n Line three"
  delegate_to: "localhost"

If the email is successfully sent, the play should return the following.

PLAY [all]

TASK [Gathering Facts]
ok: [server1.example.com]

TASK [mail]
ok: [server1.example.com -> localhost]

PLAY RECAP
server1.example.com   : ok=2  changed=0  unreachable=0  failed=0