Service Desk is an opt-in module. Until an administrator enables it, the Service Desk nav item and its settings stay hidden. Turning it on is a single, reversible switch.
You can also enable it straight from the module: clicking Service Desk in the sidebar before it's on shows a short "Service Desk isn't enabled" page with an Enable Service Desk button for administrators. (Members without the settings permission see a note asking them to contact an administrator instead.)

Once enabled, the organization gains:
Nothing starts receiving email yet — that begins only after you create a channel address and forward your inbox to it. See Email Channels & Setup.
On the same Settings → Service Desk panel, click Disable Service Desk and confirm. The confirmation now spells out exactly what happens, because disabling does more than hide the module.
Disabling is a safe, reversible switch — your existing tickets, requesters, companies, conversations, and each company's portal settings (its web address, access mode, and branding) are not deleted, so turning Service Desk back on restores everything exactly as it was. While it's off:
Overview
Service Desk turns customer emails into work items your team can triage, reply to, and track — without leaving DevStride. Here's what it is, why it exists, and the handful of ideas that make it click.
Email Channels & Setup
Create a support address, forward your inbox to it, and choose where new tickets land. Plus how replies are threaded, and exactly what happens when you remove a channel.