safe mode and mail

Hi, safe mode on and mass mailing wished. I know that it's not possible to set the time limit, when safe mode is on. Sure mass mailing using mail function takes longer than default execution time of the script. My codes should be portable, that why modification of php.ini is not an option. The users shouldn't be experinced and authorized to do this. In brief, I have to find a solution without a need to work in shell. So, due to my theoratical knowledge it seems to be a solution, to queue the mails to sendmail by using popen. Is it true? Or what could be your suggestion for this issue. Thanks in advance, Senih --- Outgoing mail is certified Virus Free. Bu mesaj virüs taramasından geçmiştir. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.489 / Virus Database: 288 - Release Date: 10.06.2003