Please update your forum profile with a real handle instead of "1192074".
I am planning to use APEX_MAIL.SEND_MAIL to send out 15 000 - 20 000 mails with the PAAS.
According to this document http://docs.oracle.com/cloud/latest/dbcs_common/CSDBU/develop013.htm#CSDBU250 we can only send 5000 mails per day...
Is it possible to increase this limit to 15 000 or 20 000 ? I saw here that could send 10 000 mails (https://community.oracle.com/message/2684697#2684697) so I'm pretty confused, someone could help me on this please ??
The 5000 limit applies to use of the Oracle Database Cloud Service. The 2008 forum post refers to use of a locally installed APEX instance, where any limit can be configured by the instance administrator using the Maximum Emails per Workspace instance setting.
Post questions relating specifically to the Cloud DB service on the Oracle Database Cloud Service forum. Note that since this is an instance-level setting, it won't be configurable for individual Cloud workspaces.