I'm having the following arrangement. One server compiling emails in php and another server which run postfix (thus I have network latencies).
Each email is about 300Kb and so as to send an email (using Zend email class) it takes about 0.2s . However, if I compress the email text content, the size becomes 30Kb and the latency about 0.06 . The problem is that postfix doesn't support text compression, thus I'm thinking of developing a milter which will decompress emails from the queue.
Can you think of any drawback of this solution or can you suggest any alternative ?
edit: The company I work for sends > 100 000 emails to registered users daily and I'm trying to reduce sending time to minimum.