I search a flexible reliable maling system. Preferrable MySql+PHP and Opensource, so I can costmize and extend it myself.
I don't need anything fancy or a pretty interface, but it should be robust/solid and reliable.
This means it should have some sort of background batch processing by cronjob or something.
It should have logging systems to resume if something breaks and doesn't send duplicate mails.
There need to be account groups to send Mails to desired people only.
It needs functions to import and synchronise emails in groups by csv/xml or something.
Sender address and stuff should be flexible.
It should dynamically add link paramters for tracking back clicks (google analytics)
It should have unsubscribe features and lists
It doesnt need to have some fancy WYSIWYG editor but should be able to handle raw html templates.
Sending methods, paramters (like -f paramter) should be specifyable. (Config file is enough)
It would also be great to have contact group synchronisation functions where i can call an external api or request an external url where a document is served for importing
I think you get it.