Click here. http://uptime.openacs.org/
Enter your email as notification email as well as user id.
Click Add new URL to be monitored.
Fill in information as in the form:
a. URL to be monitored.
b. Email address.
c. Homepage url.
d. Your name.
e. Option Either Email when down and up again or Periodic with period of duration.
then add information to database.
You will get message as below.
http://elinkz.blogspot.com addedto Uptime
Uptime is now monitoring http://elinkz.blogspot.com. You may want to bookmark the reports page .
Note: if email@example.com is the address of a pager gateway, then you will probably want to go straight to the edit parameters page to add a custom subject line and/or a custom body.