Zendesk
The value is the network, the data or the infrastructure. Keep paying.
A ticketing system for support organisations: conversations arrive by email, chat or form, get queued and routed with service-level rules, and are reported on for staffing and quality.
Do not rebuild Zendesk. Build the shared inbox with SLAs, and stop before the org chart. STACK - Node with Fastify, Postgres, one worker for mail polling - IMAP in, SMTP out THREADING, THE PART EVERYONE UNDERESTIMATES - Match on References and In-Reply-To headers first - Fall back to a signed ticket token in the subject as [#AB12CD], never a bare number - Never thread on subject alone, and write that rule down with an example of why TICKETS - Status, priority, requester, assignee, tags - Every message and every field change appended; nothing is ever edited in place - Merge two tickets by writing a merge event, keeping both original threads readable SLAs - Defined per priority: first response and resolution targets, in business hours - A business-hours calendar with holidays, in one timezone, documented - Breach is computed at query time from the event log, never stored as a flag VIEWS - Unassigned, mine, breaching soon, and everything — as saved filters - Sorted by SLA remaining, not by creation time AUTO-REPLIES - One acknowledgement per ticket, never per message, or a mail loop will find you - Loop protection: refuse to auto-reply to an address that has sent five messages in a minute Include a README on the IMAP setup, the threading rules and the loop protection test.
What you lose
- Ticketing that survives a support organisation: queues, skills, SLAs and escalation
- Email threading that copes with every broken mail client and forwarding chain
- A help centre with versioning, permissions and multilingual content
- Reporting that support managers use to staff shifts
- An app ecosystem the rest of the company already integrates with
If you would rather not build
- Chatwoot — open-source shared inbox across channels
- Help Scout — paid, simpler, aimed at smaller teams
The escape hatch
open source · no votes, no paid placement
FreeScout
$0Shared inbox and help desk in the same shape, run on your own server.
freescout-help-desk/freescoutfree · open source
Zammad
$0Full help desk with SLAs, escalation and multi-channel intake, self-hosted.
zammad/zammadfree · open source
Why this verdict
our own opinion · changed only by a person
22/100
Verdict no at 22: email threading and business-hours SLAs are the two hard parts and the prompt handles both. It still stops well short of the product, and the reason is organisational — Zendesk is bought by support departments, and departments need reporting and routing more than they need an inbox.
History
tracked since 9 Aug 2026 · nothing is ever overwritten
Questions about Zendesk
answered from the record above
Is Zendesk free?
No — the plan we track is $25 a month. Suite Team at $25 per agent per month billed annually, $29 monthly; Growth and Professional add SLAs and skills-based routing.
Can you replace Zendesk by building your own?
KEEP IT. The value is the network, the data or the infrastructure. Keep paying. Replacement score 22 out of 100, build time longer than it saves. Read what you lose before you decide.
How much does Zendesk cost?
$25 a month on Suite Team — $300 a year. Recorded 9 Aug 2026.
What do you lose by replacing Zendesk?
Ticketing that survives a support organisation: queues, skills, SLAs and escalation; Email threading that copes with every broken mail client and forwarding chain; A help centre with versioning, permissions and multilingual content; Reporting that support managers use to staff shifts; An app ecosystem the rest of the company already integrates with. If any of those carry weight for you, keep paying.
Is there an open-source alternative to Zendesk?
Yes: FreeScout, Zammad. The prompt on this page is for when you want it your way instead.
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