- //if (!sqimap_mailbox_is_subscribed($imapConnection, $folder)) {
- // check for subscription is useless and expensive just
- // surpress the NO response
- sqimap_subscribe($imapConnection, $folder, false);
+ // check for subscription is useless and expensive, just
+ // surpress the NO response. Unless we're on Mecury, which
+ // will just subscribe a folder again if it's already
+ // subscribed.
+ if ( strtolower($imap_server_type) != 'mercury32' ||
+ !sqimap_mailbox_is_subscribed($imapConnection, $folder) ) {
+ sqimap_subscribe($imapConnection, $folder, false);
+ }