Action when email is received

Question

For my email server I wanna send text SMS to users when ever they receive email to their mailbox. How can I periodically check my mail server for every 2mins whether any user had a new email. This must be even when the user is out of mailbox also.

I am using hMailServer for Windows. So, how to perform an action when the mail server receives email.

And this question doesn't mean that checking each email account. If I do that I can nearly check not more than 1000 account for a day. I need all the email account in the server must check for new emails and if new emails are found the user must be notified with SMS that he received a new email to his mailbox.

Answer 1

No problem of doing that. You just need to know how to put it all together:

1. Read the documentation of hMailServer on how to execute scripts after receiving messages.
2. Mark every user that received messages in the last period. (Database?!)
3. Write a second script/daemon that reads all marks, sends SMS for all marked mailboxes/users and after that removes all marks.

Repeat step 3 every x minutes.

Answer 2

Typically something like this would be done by setting the users who want this to store a copy of their mail in their local mail box and also forward a copy to the SMS address. In this way they get a notification of new messages which includes part of the message (SMS gateways often have very small limits to message sizes). Or you can set up delivery to a script, if hMailServer supports it, and that script can rewrite the message however you like...

This sort of method means that there's no lag in the time the message comes in and when the message to the SMS gateway is generated.

We use the script method on our mail server (not using hMailServer though), and give our users additional addresses that can be used when they want a message to go to their phone.