i have a problem with private messages, when i send the first message to someone, it correctly arrive to the recipient… the second one remain in the outbox and do not arrive to the recipient… i’ve 2 message in outbox since some days ago (one for boston and one for incognito), sometimes i see this users connected on the forum but the messages remain in my otubox…
please mew remove this post when you have read… thanks!
Messages remain in the OUTBOX until the recipient has read the message. Then it will be considered a SENT message, after they have read it.
If they have not read your msgs, they will remain in the OUTBOX until they do. There is no issue with the site, that’s how it’s designed to work.
yes i know, i also was admin of a phpbb forum … i see this users (recipient of the private messages) connected at the site two or three times a day, maybe they simply “don’t see” the new message alert 
They might have pop-up blocker that prevents new window opening to tell them they have messages, or are simply choosing not to read the msg.
Only they can tell us.