We've tested the imap.fetchbundle() function between the version 9.5.0.41 and 9.5.0.69 and the older version is ~30% faster then the newer version. The average time with 9.5.0.41 ist 94 seconds/1200 mails. With 9.5.0.69 the average is 135 seconds/1200 mails. We also tested mail.dll from Limilabs, but this component is much more slower 171 seconds/1200 mails.
How we can speedup the fetchup?
Testscenario: Rootserver with Quad Xeon and direct 1 Gbit-Uplink Outlook.com mailaccount with 1200 mails 10 times a full fetch of all mails
Kind regards Patrick