My company has thousands of students, poolers.Almost of them use free mail , so we can not send mail to all of them at one time using micrsoft exchange .Now , I have to write a tool to send mail to alll of them by the following way :
- I separate the address in to many small part and send each part every 30 minutes .
This work but it make me hard working... do you know real free tool do this similar task or a tip, trich to send thousand recipents at one time in .NET ?
eg : maximum message per day , maximum recipients at one time , max recipient per day..
Thanks you !