I'm working on a project for dispatching truck loads to subscribers so that they may try to get the cargo and make some money. My subscription service is going to be PHPmailer based.
Hypothetically let's say I have roughly 5000 subscribers. What would be the best way to send the emails simultaneously so that there isn't an unfair advantage as to go gets the email first vs someone who gets it 15 minutes later? I already have a working script for sending mail to different people without CC or BCC but I'm concerned with my site being marked as spam or a potential DDS attack.
What are my options? Would having a default email when a user signs up asking to be added to their address book work if the majority actually add?
I use GoDaddy as a host since that seems to matter sometimes.
I'm just concerned with being marked as spam or a potential attack site.
If I do need to create a delay, what would be the shortest delay possible while still being effective?
