- gSyncit Support
Either there is no default mail client ...
Either there is no default mail client or the current mail client cannot fulfill the messaging request" appears when accessing the gSyncit system tray.
This issue occurs when there is a mismatch between the bit version of gSyncit and Outlook. If you are using the 32-bit version of Outlook then you must use the 32-bit version of gSyncit. If you are using the 64-bit version of Outlook then you must use the 64-bit version of gSyncit.
Open Outlook and click File, "Office Account", and then "About Outlook" to see the installed version information of Outlook (see example below). Then inspect the gSynct about information to confirm that you have the same bit version. Based on the example below you should have the 32-bit version of gSyncit installed.