When attempting to use Gmail with Salesforce Inbox, an error "Incompatible Extensions Installed" pops up.
Gmail Outreach integration
To resolve the issue, go to chrome://extensions in your browser and uninstall or disable to Salesforce Inbox extension.
The Salesforce Inbox and Outreach Everywhere extensions do utilize the same Gmail features, so both cannot be enabled at the same time. We usually recommend using only Outreach Everywhere because best practice is to complete engagement using Outreach functionality and having that activity sync up to Salesforce from Outreach. If you use Salesforce Inbox, you're bypassing Outreach, which could possibly create duplicate activity in Salesforce and may also prevent activity from being tracked in Outreach properly.