Inbox is available as a Wordpress plugin so you can include your Contact Form across your site, and manage your conversations within the Wordpress interface.
The Wordpress plugin is useful for web teams that communicate with their marketing teams, or for bug tracking. And since it's the same Inbox that lives on the the web app and iOS, it works for cross-team communication.
Get started at https://wordpress.org/plugins/inbox-by-zendesk/
If you already have an Inbox account, please contact firstname.lastname@example.org with your subdomain before installing the plugin.