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Uptime Monitor

Email alerts

Who receives uptime mails, what the down, recovery and expiry mails say, and how to send alerts for one monitor to a different address.

3 min read

Email alerts work on every plan with no setup. By the end of this page you will know who gets each mail and what it says. You will also know how to route one monitor's mail somewhere else.

Who gets the mail

By default, every uptime mail goes to the email address you log in with.

You can send a monitor's mail elsewhere with an Email alert channel:

  1. Open the Alerts tab and add a channel with Type set to Email.
  2. Click Edit on the monitor's row.
  3. Tick the new address under Alert channels and click Save changes.

Once a monitor has an email channel ticked, its mail goes only to the ticked addresses. Your login address stops getting that monitor's mail. Tick more than one email channel to reach several people. Alert channels covers the other channel types.

The down mail

The subject is the monitor's name plus "is down", such as "Front page is down". The mail contains:

  • The start time of the failure, in UTC.
  • The cause, such as "HTTP 503" or "timeout".
  • The checked URL.
  • A View incident button that opens the project's Uptime Monitor page.
  • A link to acknowledge the incident. Incidents and acknowledging explains it.

The mail does not include a response time.

For HTTP monitors, the down mail goes out when the failures reach your Alert after setting. You get one down mail per incident, with no repeats while it stays open.

The recovery mail

The subject is the monitor's name plus "is back up". The mail states how many minutes the downtime lasted. Its View history button opens the Uptime Monitor page.

Wording for heartbeat and expiry monitors

The down mail always says that two check locations confirmed the failure. The recovery mail always says two checks came back healthy. For heartbeat and expiry monitors, a single reading opens and closes the incident, so those lines do not apply.

Expiry warnings

SSL and domain expiry monitors send warnings ahead of the date. The subject reads, for example, "Front page certificate expires in 14 days" or "Front page domain expires in 7 days". SSL and domain expiry monitors lists when each warning goes out.

The monthly report

On the 1st of each month you get the uptime report as a PDF. Its subject starts with "Uptime report". Monthly uptime reports covers it.

Quiet times, retries and time zones

  • A running maintenance window silences every alert for its monitors.
  • If sending a mail fails, we retry for about 12 minutes.
  • All times in uptime mails are UTC.
Alert channels Send uptime alerts to extra email addresses, Slack, Microsoft Teams, Discord or your own webhook, and attach each channel to the monitors it covers. Incidents and acknowledging Read the Incidents tab, see how long each outage lasted, and acknowledge an ongoing incident from the tab or from the link in the alert mail. SSL and domain expiry monitors Get warned before a certificate or a domain registration runs out. How the daily check works and when each warning mail goes out.