What is GSSMO?
GSSMO used to be know as Google Apps Sync for Microsoft Outlook (GASMO).
G Suite Sync for Microsoft Outlook® (GSSMO) is a plugin for Outlook that lets you use Outlook to manage your G Suite mail, calendar, and contacts—along with your Outlook notes, tasks, and journal entries. GSSMO seamlessly syncs mail, calendar events, contacts, notes, and tasks between your Google profile in Outlook and your G Suite account in the cloud. As a result, you can access this same information at any time, from any device where you use G Suite.
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Check out which versions of Windows and Microsoft Outlook are supported by GSSMO.
Note: When you install GSSMO, you also have the option to migrate your mail, calendar, contacts, and other data from your old Outlook profile. However, if all you want to do is migrate data (that is, you don't plan to keep working in Outlook afterwards), use G Suite Migration for Microsoft Outlook instead.
FAQWhen should I use GSSMO?
If you've recently switched to G Suite from Microsoft Exchange or some other Outlook service, GSSMO can help out while you make the transition.
All of your G Suite mail, calendar events, and contacts, as well as your Outlook notes and tasks are synced. For details, see What's synchronized between Outlook and G Suite?
Data that isn't supported by G Suite or is otherwise incompatible. This includes Outlook journal entries, follow-up flags, distribution lists, rich formatting in contacts, and more. You can continue to use these features in Outlook, and in some cases you can use equivalent features in G Suite. But the data isn't synchronized back and forth. For a complete list of features that aren't synchronized, see What's synchronized between Outlook and G Suite?
For a comprehensive list of unsupported Outlook features, see What's synchronized between Outlook and G Suite?
Note, however, that if all you want to do is import data to G Suite—that is, you don't plan to keep working in Outlook afterwards—use G Suite Migration for Microsoft Outlook instead of installing GSSMO.
Email messages, folders, calendar events, contacts, tasks, notes, journal entries, and more. A few things that don't get imported to Outlook include public folders, category assignments for mail messages, mail signatures, and rules. Note that while journal entries import to Outlook, they don't import to your G Suite account in the cloud. For details, see What's synchronized between Outlook and G Suite?
No. When importing from an Exchange profile, GSSMO takes a snapshot of the profile's current data only and imports just that. Once the import is complete, no new email, calendar events, or other data received on the Exchange server will import or synchronize with your G Suite account in the cloud. To sync email continuously between an Exchange server and G Suite, your administrator must set up dual delivery.
Most plugins should continue to function as usual. Some plugins, however, are disabled during the installation process due to incompatibility with GSSMO. These plug-ins include:
- Acrobat PDF Maker Toolbar
(registry key: HKLM\SOFTWARE\Microsoft\Office\Outlook\Addins\PDFMOutlook.PDFMOutlook)
- Outlook Change Notifier
(registry key: HKLM \SOFTWARE\Microsoft\Office\Outlook\AddinsOutlookChangeNotifier.Connect)
We also recommend disabling any anti-virus plug-ins, as they can often lead to inconsistent syncing behavior.
No, GSSMO isn't supported for Mac. Microsoft Outlook for Mac doesn't support the Messaging Application Programming Interface (MAPI), which is required for GSSMO to communicate with Outlook. This Outlook limitation makes a Mac-compatible version of GSSMO infeasible.
Our SLA applies specifically to our services. Client software is a fundamentally different support problem because of the widely divergent desktop environments it runs on. However, we will respond to support requests in the same manner that we do with our hosted services.
With the default Outlook settings, they should. If the original settings have been modified, restore the following defaults:
- In Outlook, click Tools > Options.
- On the Preferences tab, under email, click E-mail Options.
- Select the check box for Save copies of messages in Sent Items folder.
For a list of known issues about the current release of GSSMO, go to Known Issues and look under Sync & Mobile.