If you're having problems with MaxMon remote control it could be one of the following:


The phone running the MaxMon app must be connected to a data network (WiFi or cellular). Verify that it is connected to a data network using the phone browser to access the Internet, or send a test email from the MaxMon app ("MENU> Settings> Diagnostics> Email test"). If the phone is at a remote location it is possible the data network there has failed. Are you still receiving email reports? Check the network sensors in the reports for network errors.


The Google account used by the MaxMon app to send (and receive) emails must have IMAP enabled - see Q: How do I create a new Google account for MaxMon? Log into that account in a web browser and see if remote control commands are being marked as Spam (look in the Spam folder). If they are, mark them as 'Not Spam' and add the sending account (it should be This email address is being protected from spambots. You need JavaScript enabled to view it.) as a contact.

Background service

The MaxMon app background service must be running to process remote commands. Can you see the cat in the mousehole on the home screen of the MaxMon app?

Phone time

Remote control commands are time-stamped (to prevent replay attacks). If the time on the phone is inaccurate the remote control commands will appear to have been sent in the future or past and will either be ignored, or you may receive an 'Old signature' error response. The solution is to ensure that the phone time is reasonably accurate (within a few minutes of the actual time). You may also receive the 'Old signature' error response if the network at your monitored location is intermittent, causing receipt of a remote control command to be delayed.

Have you enabled remote control?

Have you enabled remote control in the MaxMon app? See Enabling remote control.


The MaxMon remote control web application uses specially formatted emails to transport commands to the remote MaxMon app, which is meant to read them almost immediately (via the magic of "push email notification") and in most cases respond by email to its configured email recipient(s). This typically results in a delay between sending a remote command and receiving an email response of a minute or so, i.e. a typical email round trip.

However, if the data connection at the remote MaxMon app is patchy it may not receive the command email, or be unable to send an email reply (it will not normally try again). So if you do not receive a response to a remote command don't panic ... just try again later. The larger the response email the more likely it is to fail if the remote data connection is patchy. The smallest response email results from a "Get configuration", the largest (by far) from "Get support info". So sending a "Get configuration" is the best way to ping your remote MaxMon app.

Passwords & passphrases

Two different passwords or passphrases are involved in using MaxMon remote control:

  1. Remote control passphrase - when you enable remote control in the MaxMon settings you specify a secret passphrase, so that other users who know the email address associated with your MaxMon phone cannot remotely control it. The MaxMon remote control web application (on the MaxMon web site) will prompt you for this passphrase and use it to digitally sign the command sent to the remote MaxMon app. If the 'signature' does not match the configured passphrase the command will be ignored.
  2. Web site login - in order to use the MaxMon remote control web application you will have to login to the MaxMon web site with a username and password you choose when you create an account on our web site (you will be prompted to create an account if you do not have one). If you are using the remote control web application from a trusted device you can use the 'Remember me' button on the login screen to avoid being prompted to login in future.