The main Klaviyo Zendesk integration is Klaviyo's own, which you install from the Integrations tab in Klaviyo. It sends two Zendesk events into Klaviyo, Opened Ticket and Resolved Ticket, so you can use them in segments and flows. It also lets your team answer Klaviyo SMS and WhatsApp messages from Zendesk. A Klaviyo app for the Zendesk sidebar shows each customer's consent, lists and segments on the ticket. Where it stops: only those two events come across, Klaviyo checks tickets hourly, replies from Klaviyo's inbox never reach Zendesk, and nothing tells marketing to hold an email for a customer with an open complaint unless someone builds it. AI agents do that checking and tell your team what needs a person.
Why the Klaviyo Zendesk integration matters
Klaviyo sends your emails and texts. Zendesk is where your support team answers customers. Without a link, the two teams work from different facts. A customer waiting on a refund gets a cheerful promo the same morning, and the support agent has no idea which campaign the customer is texting back about.
So a Zendesk Klaviyo integration has to carry a few things. Support activity has to reach Klaviyo, so marketing can hold back or follow up. Marketing facts, like consent and which list a customer is on, have to show up where agents work. And text replies have to land in one place, so no one answers twice.
Three ways to connect Klaviyo and Zendesk
The first two are built by Klaviyo. The third is a zap you build yourself.
Klaviyo's Zendesk integration
- How it works
- You install it from the Integrations tab in Klaviyo and approve access to your Zendesk account. Klaviyo then tracks Opened Ticket and Resolved Ticket events on each customer's profile, with the ticket's subject, tags, priority and agent. You can also turn on Sync text message conversations and Sync WhatsApp conversations, so texts to your Klaviyo number become Zendesk tickets.
- Good for
- Stores on Klaviyo SMS or WhatsApp that want support to answer texts in Zendesk, and marketing to see who has a ticket open.
- Where it breaks
- Klaviyo says it tracks only those two ticket events, imports 180 days of past tickets, then checks for updates hourly. Past text conversations don't move to Zendesk, images and GIFs don't show there, and replies sent from Klaviyo's own inbox are not added to the Zendesk ticket.
The Klaviyo app for Zendesk
- How it works
- Klaviyo's free app in the Zendesk Marketplace shows a customer's Klaviyo profile, consent status, and lists and segments in the ticket sidebar. For WhatsApp, agents can see when consent runs out and send a follow-up asking to continue.
- Good for
- Support teams who want to see a customer's marketing details without opening Klaviyo.
- Where it breaks
- It only shows data, and it needs Klaviyo's Zendesk integration set up first. The one review on the listing, from 2026, warns that with more than one account, data went to all of them.
A Zapier zap
- How it works
- Zapier's templates create or update Klaviyo profiles for new Zendesk users, create Zendesk tickets for new Klaviyo events, and create tickets when someone joins a Klaviyo list or segment. Zendesk is a Premium app on Zapier.
- Good for
- One job the built-in connection doesn't do, like opening a ticket when a VIP customer joins a segment.
- Where it breaks
- Each zap is one trigger and its steps. A profile updated from Zendesk and a ticket made from Klaviyo can loop or make copies unless you add checks, and someone has to watch the zap history.
Arkeo agents
- How it works
- Agents read new and open Zendesk tickets, check each customer against the Klaviyo campaigns and flows about to reach them, hold or flag the ones that shouldn't go out, and tell your marketing and support leads what they changed.
- Good for
- Stores where support and marketing are different people, and nobody has the hours to check one against the other each day.
- Where it breaks
- Anything your rules keep for a person, like a refund or an angry reply, goes to your support lead in one message.
How to set up the Zendesk Klaviyo integration
These follow Klaviyo's own help article. Open it for the screens.
- 1Set up texting in Klaviyo first
If you want to answer texts or WhatsApp messages in Zendesk, set up SMS or WhatsApp in Klaviyo before you connect. Klaviyo says texting needs a toll-free number, long code or short code. Branded sender IDs can't get replies.
- 2Install Zendesk in Klaviyo
In Klaviyo, open the Integrations tab, click Explore apps, search for Zendesk and click Install. Enter your Zendesk address as mydomain.zendesk.com, click Connect to Zendesk, log in, and approve the permissions.
- 3Set brands and conversations
Under Tickets, sync all Zendesk brands or only some. Check Sync text message conversations or Sync WhatsApp conversations if you want them, set the brand for those tickets, then click Complete setup.
- 4Add the sidebar app in Zendesk
Install the Klaviyo app from the Zendesk Marketplace, or from your Klaviyo account, so agents see consent, lists and segments on each ticket.
- 5Test one text, then build one segment
Text your Klaviyo number from a phone that is a subscriber, check that a ticket opens, and send a public reply. Use an agent whose email is different from the test profile, or Klaviyo won't send the reply. Then build a segment of people with an Opened Ticket and no Resolved Ticket, and keep them out of your next campaign.
Where the Klaviyo Zendesk integration stops
The connection tells Klaviyo that a ticket opened or closed. That is all it carries. In Klaviyo's community, a store owner asked in 2024 how to send more than the email and the ticket events, like the consent a customer gave on a Zendesk help form. A Klaviyo team member answered that the integration only tracks Opened Ticket and Resolved Ticket, and anything more needs the API or a custom event. So the reason for the ticket, the refund, and the order it was about stay in Zendesk unless someone copies them.
Timing is the next gap. Klaviyo checks Zendesk for ticket updates hourly. A flow waiting on Resolved Ticket can send its follow-up an hour late, and a campaign can go out to a customer whose complaint is still open, because nobody added them to a hold segment that morning.
Texts have their own limits. Klaviyo's guide says past conversations are not moved to Zendesk, images and GIFs don't show, and you can't send a picture back. Replies sent from Klaviyo's inbox don't land on the Zendesk ticket, so Klaviyo tells you to reply from one place only. In a team of five agents and two marketers, someone always forgets. And if you connected before Klaviyo moved Zendesk to a new sign-in in 2025, Klaviyo says only the new version will get updates, so someone has to find the Update version button.
The agents that do it
Each agent does one job from start to finish in your own Klaviyo and Zendesk, and tells the right person what needs them.
The right person sees each ticket first.
- Reads new ticketsas they come
- Tags them and sends them to the right personright away
- Flags urgent ones to your leadright away
No customer waits days for a reply.
- Checks open ticketsevery hour
- Finds ones waiting too longper ticket
- Nudges the owner and tells your leadright away
Mail people who read it, and land in more inboxes.
- Finds people who haven't opened in monthsevery week
- Moves them to a win-back list, or stops mailing themper your rules
- Reports list size and healthevery Monday
Questions
Is my customers' information safe?
Yes. Agents work in your own Klaviyo and Zendesk accounts and see only what their job needs. Customer details never go into public AI. Agents connect to AI through business-grade connections audited under SOC 2.
What does the Zendesk Klaviyo integration sync?
Klaviyo tracks two Zendesk events, Opened Ticket and Resolved Ticket, with details like the subject, tags, priority and agent. It brings in 180 days of past tickets when you connect, then checks hourly. With conversations turned on, it also turns texts and WhatsApp messages into Zendesk tickets.
Can I answer Klaviyo SMS messages from Zendesk?
Yes. Turn on Sync text message conversations when you set it up. A public reply in Zendesk is sent as a text, and internal notes stay private. Past conversations from before you connected don't move over.
Why didn't my Zendesk reply send as a text?
Klaviyo's guide says a reply won't send if the agent and the customer's profile share the same email address. That often trips up a first test. Use a different agent or a different test phone.
What does it cost?
You get the price on the call, along with the hours it saves your team.