sending Entitlements of multiple users to their respective managers

I am able to retrieve all the users from the LDAP and able to send mail to there respective managers.

but the thing is that we are sending mail to each manager one after the previous mail, so we are getting problem here is that, the next mail is not send till the previous manager accept that request. It is like queue, till one

users recertification task is done, another users are in queue waiting for previous users completion.

I need here help, How to send mail with form to all Managers of respective users at a time and if any manager is not attending the request then also other users task should go on.

[637 byte] By [IDM_Discussiona] at [2007-11-27 11:12:05]