Marketing Automation · Integration
systeme.io
Add systeme.io to your product for your customers, and give your AI agents governed access to it.
systeme.io bundles funnels, email, courses and affiliates for people running a business without a marketing department, and its public API is built around the two objects everything else hangs off: contacts and the tags attached to them. That is not a limitation once you see how the product works, because a tag is the trigger. Adding one can start a campaign, enrol somebody in a course or begin a sequence the customer built themselves, so your product does not need to know what an automation contains in order to set it running. Contacts carry custom fields the account owner defined, so mapping is per tenant rather than a fixed schema, and each account holds its own API key. fastn keeps those keys per tenant and absorbs the API changes.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let each customer connect their own systeme.io account so their contact list is reachable from inside your product.
Create or update a contact with the custom fields that account defined, instead of the ones you guessed.
Apply a tag from your product to start an automation the customer already built, and remove it to stop one.
Read a contact back with its tags to show, inside your product, which sequences a person is currently in.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent finds the contacts carrying a given tag and explains what that tag is used for in the account.
An agent tags a contact to enrol them in a sequence, within scoped permissions and with the action attributed.
An agent reviews a contact's field values and reports what is missing before a campaign goes out.
Example prompt
Tag this customer as a trial signup in systeme.io so their onboarding sequence starts, then tell me which other tags they carry.
Set up systeme.io in 4 steps
- 01Enable the systeme.io connector in your fastn dashboard.
- 02Have each customer generate a public API key in their own account and authorise it once.
- 03Map the contact fields your product writes and agree which tags your product is allowed to apply.
- 04Call it from your product and expose the same governed connection to your agents.
Why teams use the systeme.io integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a systeme.io integration without building it. Your customers connect their own systeme.io account inside your product and work their campaigns, segments and subscribers there, with no per-customer code on your side.
- Handle the part that actually costs time: engagement data arrives as a high-volume event stream, so ordering and deduplication matter. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a systeme.io update is not your on-call problem.
- One integration serves your product and your agents. The same governed systeme.io connection powers in-product features and gives AI agents scoped, audited access, so you trigger and measure campaigns from inside your product without wiring it twice.
Used by these teams
Compare with
Mailchimp
ActiveCampaignWorks well with
TeachableOften used alongside
Tools the same teams tend to run next to systeme.io, across other categories.
Salesforce
HubSpot
Pipedrive
Zoho CRMsysteme.io integration FAQ
How do I add a systeme.io integration to my product?
Enable the systeme.io connector in your fastn dashboard, then let each customer authenticate their own systeme.io account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no systeme.io client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own systeme.io account?
Yes. Every connection is scoped to the individual customer, so each authorises their own systeme.io account and only ever sees their own campaigns, segments and subscribers. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this systeme.io integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent finds the contacts carrying a given tag and explains what that tag is used for in the account.
Who maintains the systeme.io integration?
fastn does. When systeme.io changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Can I trigger a systeme.io campaign from an event in my product?
Yes. Product events can start a campaign, add a contact to a segment, or enrol someone in a journey, so lifecycle messaging follows what a user actually did rather than a nightly export.
Can I read engagement results back from systeme.io?
Yes. Results come back scoped per tenant, so your product can act on them without one customer's data mixing with another's. What you get depends on the channel: opens, clicks, bounces and unsubscribes where there are sends, and impressions, spend and conversions where there are campaigns.
What can I build with the systeme.io integration?
A common starting point: let each customer connect their own systeme.io account so their contact list is reachable from inside your product. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the systeme.io integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding systeme.io does not change your per-connector cost. You can start free with 3 connected accounts.
Add systeme.io to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.