The Gap Between Ads and Email
You run Google Ads, Meta campaigns, LinkedIn promotions. Leads come in. Then what? Most teams export a CSV, clean it up, and manually import it into Klaviyo. By the time the welcome email goes out, the lead has gone cold.
Synter closes this gap. Connect your Klaviyo account and your AI agent can sync audiences directly into Klaviyo lists, fire conversion events that trigger automated flows, and pull campaign performance data — all without touching a spreadsheet.
What You'll Learn
- How to connect Klaviyo to Synter in under 2 minutes
- Syncing ad campaign leads into Klaviyo lists automatically
- Firing conversion events to trigger Klaviyo flows
- Viewing email/SMS metrics alongside your ad performance
- Exactly which OAuth scopes we request and why
- Privacy and data handling
Step 1: Connect Klaviyo
Go to Settings → Credentials and find the Klaviyo tile under the Email Marketing section. Click Connect.
You'll be redirected to Klaviyo's OAuth authorization page. Sign in with your Klaviyo account and authorize Synter. The connection uses OAuth 2.0 with PKCE — your credentials never touch our servers.
Once authorized, Synter fetches your account information and the connection appears as active in your credentials page. That's it — you're connected.
Step 2: Sync Audiences Into Klaviyo Lists
The most common use case: you have leads from ad campaigns and want them in Klaviyo so they receive your welcome series, nurture sequences, or promotional emails.
Ask your Synter AI agent:
"Sync these leads to my Klaviyo list 'Google Ads Leads':
- alice@example.com (Alice Smith)
- bob@company.io (Bob Johnson, +1-555-0123)"The agent uses Klaviyo's Profiles API to upsert each contact (creating new profiles or updating existing ones) and adds them to the specified list. Phone numbers are included for SMS campaigns when provided.
For bulk operations, you can also pipe audiences from Clay, your CRM, or CSV uploads directly through Synter into Klaviyo.
Step 3: Track Conversions to Trigger Flows
When someone converts on one of your ad campaigns — signs up, makes a purchase, requests a demo — Synter can fire that event to Klaviyo. This lets you trigger Klaviyo flows based on ad-driven actions.
Ask your agent:
"Track a 'Signed Up' event in Klaviyo for alice@example.com
with properties: plan=Pro, source=Google Ads, value=$49"The event appears in the contact's Klaviyo activity feed and can trigger any flow you've configured — welcome emails, onboarding sequences, or post-purchase upsells.
View Email & SMS Performance
Ask your agent to pull Klaviyo campaign metrics alongside your ad platform data:
"Show me my Klaviyo campaigns from the last 30 days"The agent returns campaign names, send counts, open rates, click rates, and revenue attributed — giving you a complete picture of your marketing performance across paid and owned channels.
What Synter Reads From Klaviyo
Here's exactly what data the integration accesses:
| OAuth Scope | What It Does |
|---|---|
| accounts:read | Reads account name and ID for connection setup |
| campaigns:read | Lists campaigns and their performance metrics |
| campaigns:write | Creates and updates campaigns on your behalf |
| flows:read | Reads flow configurations for reporting |
| lists:read | Lists your Klaviyo lists and segments |
| lists:write | Adds profiles to lists for audience sync |
| profiles:read | Reads contact profiles for deduplication |
| profiles:write | Creates and updates subscriber profiles |
| segments:read | Reads segments for targeting insights |
| metrics:read | Reads campaign metrics (opens, clicks, revenue) |
| events:write | Fires custom events to trigger Klaviyo flows |
| templates:read | Reads email templates for campaign creation |
Use Cases
Lead-to-List Automation
A Google Ads lead form captures an email. Synter syncs it to your "New Leads" Klaviyo list within seconds. The welcome flow fires immediately — no manual import.
Post-Purchase Flows
A customer converts on a Meta ad. Synter fires a "Purchase" event to Klaviyo with the order value and product name. Your post-purchase flow sends a thank-you email with upsell recommendations.
Cross-Channel Reporting
Ask your agent "Compare my Google Ads and Klaviyo performance this month." Get ad spend, email revenue, and combined ROAS in one view.
Re-engagement Campaigns
Export a Klaviyo segment of churned subscribers and create a retargeting campaign on Meta or LinkedIn — all through a single conversation with your AI agent.
Privacy and Security
Synter uses OAuth 2.0 with PKCE for Klaviyo authentication. Your Klaviyo password is never shared with us. Access tokens are stored encrypted and automatically refreshed.
We only access the data described by the scopes above. You can revoke access at any time from your Synter credentials page or from Klaviyo's integrations settings.
Subscriber data synced to Klaviyo stays in Klaviyo. We pass it through — we don't store copies of your contact lists.
Get Started
Ready to connect Klaviyo? Sign up for free and connect Klaviyo from Settings → Credentials. Your AI agent will handle the rest.
Already have a Synter account? Connect Klaviyo now →