I’m dying to know myself! I primarily want to use this so I can blog from my cell phone. I have worked around the issue by the following code change in wp-mail.php:
// original line of code, post by phone + 1 hour
// $time_difference = get_settings(‘gmt_offset’);
// makes post-by-email work, but phone is + 2 hours
// $time_difference = -5;
// makes post-by-phone work but email is -2 hours
$time_difference = -7;
WARNING: You’re the worst kind of idiot if you insert any code I wrote for anything. You have been warned.
Although, my post-by-phone messages are coming out with the correct date now, just not the post-by-email ones.