If you require support or have any questions about the service, you can email us at firstname.lastname@example.org
The service works thus: You write some messages and specify when you want Dead Man's Switch to check up on you. These dates are called "intervals". For example, for intervals of "15, 30, 60", Dead Man's Switch will email you 15 and 30 days after your last checkin. If you don't check in again in that period of time, all your messages will be sent to the message recipient(s) 60 days after your last checkin.
To add a message, go to your home page by the link on the toolbar on top after logging in and click write a new message. Fill in the required fields and press "save message".
To test the service, add a new message and, when asked to specify the intervals on which you would like to be contacted, select "Test message". This will make Dead Man's Switch contact you the next day to make sure you are responsive and send the email to the recipient(s) you have specified one day after that if you do not respond. This way, you do not have to wait for the full two months to test the service, but a mere two days.
If you would like to send a message to many people at the same time just add multiple addresses in the "recipients" field, separated by a comma. There is a limit to how many people per message you can add if you are a regular user.
To ensure that your messages will not be read by anyone other than the intended recipient, the messages are only ever stored securely on our servers. The messages are destroyed after they are sent, and you can delete them at any time.
If this is not enough, you can encrypt your messages using symmetric or asymmetric encryption using widely available software like PGP or GPG. This will ensure that no-one other than the intended recipient will ever be able to see the contents of your message.
You can find the terms of service here.