Batch editing

Multiple contacts can be selected just like in OSX Finder application. Hold down ⌃ to pick contacts and ⇧ to select a range of contacts at once.
Batch Actions

Several actions are available for selected contacts at the bottom of the window:
- Change sort order by clicking on the SORT BY… label
Email selected contacts
iMessage selected contacts
Tag or Untag. Pick a tag from the dropdown to add to all selected contacts. If a tag has a checkmark next to it, all of the selected contacts already belong to it. Selecting it will remove this tag from selected contacts.
Add to source. Allows adding all selected contacts to a source. For example this allows to copy all of your Facebook contacts to your iCloud.
Merge. Merge two or more contacts together. Multiple contacts from the same source (eg - 2 iCloud contacts) will be merged into one. Contacts from different sources (such as iCloud and Facebook) will be linked.
Delete. Alert will give a choice to delete selected contacts either from the currently selected source only or completely from all sources (deletes the contact and its linked contacts)
Synchronize. Indicates current synchronization state (and error messages) and can be used to force synchronization.
Pin to screen. Pin Cobook window to screen as the topmost application, useful if you want it to stay visible while some other application is in focus.
More actions

- Copy contacts. Copies the selected contacts as vCards and as rich text to the clipboard.
- Import Contacts… Import contacts from vCard file(s).
- Export Selected Contacts… Export selected contacts to a vCard file.
- New Contact. Creates and opens new contact in the currently selected tag/source.
Right click menu

Contact list also has some of these actions available via right-click menu.