Klaviyo experts for the engineering side: integrations, data and agents.
Klaviyo is only as good as the events and profiles it is fed. We connect it to the store, ERP and helpdesk, move brands onto it, and build the agents that act on its data. We do not run your campaign calendar.
4.6 from 18 Google reviewsShipping since 2016
- A move onto KlaviyoFrom $7,000
- One integration or automated workflow$8,000
- A support or retention agent that reads and writes Klaviyo dataFrom $8,000
- Fixedprice in writing before work starts
- Yoursthe code, in your repositories
- 150+products shipped since 2016
- 4.6★from 18 Google reviews
What Gigabit does on Klaviyo, and what it leaves to a marketing agency.
Gigabit does the engineering work on Klaviyo: moving a brand onto it from another email tool, sending it the order, shipping, returns and subscription events its flows depend on, keeping profiles and the catalog in step with the store and the ERP, and building AI agents that read and write Klaviyo data through its API and MCP server. Each job has a fixed price in writing.
We are not a Klaviyo marketing agency. We do not plan, write or send your email and SMS campaigns each month, and we are not in Klaviyo's partner programme. Our published work with Klaviyo is one step in a larger build: a returns automation for a $28M multi-channel retailer validates the return, creates the NetSuite record and the ShipStation label, and sends the confirmation through Klaviyo.
The Klaviyo work we take on.
The plumbing first. Flows and agents are only as good as the events underneath them.
Migration onto Klaviyo
Profiles, consent status and suppression lists moved from Mailchimp, Omnisend or another email tool, flows rebuilt, and counts reconciled before the old account is switched off.
Events from the systems that know
Orders, shipments, returns, subscriptions and support tickets sent to Klaviyo from the store, ERP, shipping tool and helpdesk through its API, so a flow fires on what actually happened.
Tracking and data clean-up
Custom events and properties named consistently, duplicate profiles merged, and the catalog feed kept in step with the store, so a segment means what its name says.
Operational flows
Flows built on those events for the messages operations depend on: return confirmations, back-in-stock notices, delivery exceptions and order status.
API revision upgrades
Klaviyo dates each API revision, deprecates it a year after release and retires it a year after that. We move custom integrations to a current revision before the old one is retired.
Agents on Klaviyo data
Support and retention agents that read a customer's profile, orders and message history and write events back, with confidence thresholds and a person on the uncertain cases.
Klaviyo ships its own agents. A custom one starts where the work leaves Klaviyo.
Klaviyo's AI works inside Klaviyo. The gap is the agent that also has to act in the ERP, the warehouse or the helpdesk.
Built into the platform
Klaviyo groups its AI under the name K:AI and has opened its data to outside assistants.
- Composer, Klaviyo's AI marketing agent, turns a written brief into a campaign that is ready to launch.
- Customer Agent, an AI customer service agent that answers from the customer's profile and order data.
- A Klaviyo MCP server, remote-hosted or local, plus Claude and ChatGPT apps, so an outside assistant can work with Klaviyo data.
Agents that cross systems
A refund, an exchange or a late wholesale order does not finish inside Klaviyo. It ends in the ERP, the shipping tool and the helpdesk.
- A returns agent that checks eligibility, raises the ERP record and the label, and triggers the Klaviyo confirmation.
- A support agent that replies on its own only above a confidence threshold, and hands over with its draft below it.
- Events written back to Klaviyo when the agent acts, so flows and segments reflect what happened.
- An evaluation set built from your historical tickets, run before launch and after every change.
Published prices, mapped to the job.
The same figures as the pricing page. Nothing on this platform is quoted from a separate rate card.
Platform Migration
A move onto KlaviyoFrom another email tool: profiles, consent status and suppression lists carried over, flows rebuilt, counts reconciled.
AI Quick Win Sprint
One integration or automated workflowFor example returns and shipping events from the ERP and shipping tool into Klaviyo, with the flow that uses them.
Gigabit Agents
A support or retention agent that reads and writes Klaviyo data
| The job | How we deliver it | Price |
|---|---|---|
| A move onto KlaviyoFrom another email tool: profiles, consent status and suppression lists carried over, flows rebuilt, counts reconciled. | Platform Migration | From $7,000 · fixed · from 4 weeks |
| One integration or automated workflowFor example returns and shipping events from the ERP and shipping tool into Klaviyo, with the flow that uses them. | AI Quick Win Sprint | $8,000 fixed · 3 weeks |
| A support or retention agent that reads and writes Klaviyo data | Gigabit Agents | From $8,000 · flat, per agent |
| Ongoing Klaviyo developmentCustom events, data sync and API revision upgrades. | Embedded AI Teams | $3,000–$7,500 / engineer / mo |
| Keeping integrations and agents healthy after launch | Managed AI Operations | $3,000–$20,000/mo |
A price marked “from” buys the base scope set out on the pricing page. Anything larger is quoted as a fixed price before work starts. Work with no natural end, such as ongoing development, is priced per engineer per month with no lock-in.
When Klaviyo is the right call, and when it is not.
Choose it when
- Flows fire late, or on the wrong people, because the events behind them are missing or wrong.
- You are moving onto Klaviyo and cannot afford to lose consent records or history.
- You want an agent that uses Klaviyo data and also acts in the ERP, shipping tool or helpdesk.
Look elsewhere when
- You want campaigns planned, written and sent every month. That is a Klaviyo marketing agency; Klaviyo's partner directory lists them.
- You need email design, copy or SMS strategy. We build the system, not the content.
- Klaviyo's built-in store integration already sends every event you use. There is nothing for us to fix.
How it runs, and what you receive.
- 01
Scope
One call, then a written plan: the workflow, the data it touches, what a first release covers and a fixed price.
- 02
Build
Short sprints with a demo on staging. Every AI release passes an evaluation set built from your real cases.
- 03
Launch
Live with a person on the risky steps and an audit log of every action.
- 04
Run
We monitor, re-run the evaluations and fix, or hand over to your team with docs and runbooks.
- The code, in your repositories
- The evaluation set and its latest report
- Architecture notes and a runbook
- An audit log of every agent action
Often scoped alongside.
Shopify
Builds, migrations, custom apps and Functions, plus support and returns agents grounded in live order data.
Open PlatformShopify Plus
Checkout extensions, Functions, B2B catalogs, expansion stores and migrations onto Plus, plus agents on live order data.
Open PlatformHubSpot
Workflow automation, custom objects, integrations with billing and product data, and agents that span the CRM and beyond.
Open ReadCase study: operations automation with Klaviyo confirmations
Further reading for Klaviyo buyers.
OpenQuestions Klaviyo teams ask.
Something else? Book a call with an engineer.
Is Gigabit a Klaviyo agency?
Not in the usual sense. A Klaviyo marketing agency plans, writes and sends your email and SMS campaigns every month. Gigabit does not do that and is not in Klaviyo's partner programme. We are engineers: we move brands onto Klaviyo, send it the events its flows need from the store, ERP and helpdesk, clean up profile data, and build AI agents that work on it.
How much does Klaviyo integration work cost with Gigabit?
One scoped integration or automated workflow is $8,000 fixed over three weeks. A move onto Klaviyo from another email tool starts at $7,000 fixed. An agent that reads and writes Klaviyo data is a flat fee from $8,000. Ongoing development is $3,000–$7,500 per engineer per month.
What does Klaviyo itself cost?
Klaviyo's pricing page (checked 10 November 2026) lists a free plan for up to 250 active profiles and 500 emails a month, an Email plan from $20 a month and a Marketing plan from $25 a month, each starting at 500 active profiles and 5,000 emails. Prices rise with the number of active profiles, and accounts over 150,000 active profiles are quoted by Klaviyo's sales team. Those are Klaviyo's fees, paid to Klaviyo.
Can an AI agent work with Klaviyo data?
Yes. Klaviyo publishes an MCP server, remote-hosted or local, that lets an outside assistant work with Klaviyo data, and its API covers profiles, events, flows and catalogs. Klaviyo also sells its own agents, Composer for marketing and Customer Agent for service. A custom agent is worth building when it has to act in other systems too, such as the ERP or the shipping tool.
Have you built on Klaviyo before?
In one published project, as one step of a larger build. A returns automation for a $28M multi-channel retailer validates each return, creates the NetSuite record, generates the ShipStation label and sends the confirmation through Klaviyo. The case study's results are for the whole operations build, not for Klaviyo alone.
Will a migration to Klaviyo lose our consent records?
It should not, and the migration is planned so it does not: consent status, unsubscribes and suppression lists are exported from the old tool, mapped to Klaviyo's consent fields and reconciled by count before anything is sent. We do not give legal advice on consent rules; your counsel decides what your records must show.
Tell us what Klaviyo is missing.
A migration, an integration or an agent. Thirty minutes to scope it, then a fixed price in writing.
- The Klaviyo set-up you run today
- The job, and the systems it touches
- What a first release covers
- A fixed price, in writing