Multiple inboxes in Gmail will no longer support preview panes in the three-pane layouts and will also get support for independent scrolling, a unified toolbar and adjustable width in right-side configurations.
Gmail’s multiple inboxes has been a useful tool for students and professionals as it helps in streamlining the work by having all the relevant emails visible alongside the main inbox. The preview pane will also be renamed ‘reading pane’.
Those who want to continue using the preview pane will need to use a different inbox type than multiple inboxes. To change the inbox type, go to Settings > Inbox > Inbox type. This setting is currently available under Settings > Advanced > Inbox type.Following the update, the settings option for multiple inboxes will be shifted from Advanced tab to Inbox under Gmail settings. Users will be able to enable or disable reading (preview) pane by going to Settings > Inbox > Reading pane. These changes will be rolled out starting February 20, 2020, for the rapid release domains and March 5, 2020, for scheduled release domains to personal Google accounts and G Suite users.
Users running unsupported configurations will see a notification (refer to the image below) informing them about the changes.
Individual scroll bars for multiple inboxes
While currently, you can only scroll all the inbox windows at once in multiple inboxes on Gmail, the update will bring individual scroll bars for each inbox in multiple inboxes mode.
Alongwith that, the update will also bring more ease for the user to adjust the inbox size by moving the inbox divider to minimise or maximise a particular panel. Also, additional sections in multiple inboxes will be collapsible.
In addition, multiple inboxes will now get one action toolbar that will work across sections, unlike the individual toolbars for different inboxes and none for the right sidebar available right now.