Moving a newsletter from Flodesk to Kit
A creator rebuilding in Kit sets the segment webhook so every new Flodesk segment member is tagged in Kit, while old broadcasts keep going out from Flodesk.
Native on one side, webhook on the other
Flodesk + Kit (ConvertKit) integration
Flodesk segments can start Kit tags and sequences through a Plandalf catch URL, and a checkout can write the buyer to both.
No credit card required. No coding required.
Flodesk
Kit (ConvertKit)Does Flodesk integrate with Kit (ConvertKit)?
Plandalf does not sync Flodesk with Kit (ConvertKit). Kit has native Plandalf steps; Flodesk is reached through its API with Send Webhook, and a Flodesk webhook you create can post to a Plandalf catch URL. That lets a Flodesk event drive Kit, and the reverse.
What moves between Flodesk and Kit (ConvertKit)
| Event | From and to | Through | What happens |
|---|---|---|---|
| Subscriber added to segment | Flodesk → Kit | Webhook | A webhook created in Flodesk's API posts JSON to your catch URL, including a segment object. The sequence runs Tag Subscriber or Add Subscriber to Form in Kit. |
| Checkout completed | Plandalf → Kit | Native step | Tag Subscriber and Add Subscriber to Sequence use {{trigger.customer_email}}. Kit steps that add something create the subscriber when Kit has no record. |
| Checkout completed | Plandalf → Flodesk | Webhook | A Send Webhook step posts to Flodesk's subscribers endpoint with the email and a list of segment_ids, using HTTP Basic with the API key as username. |
| Subscriber joined form | Kit → Flodesk | Webhook | Plandalf adds the Kit webhook, and the sequence calls Flodesk's API to create the subscriber or put them in a segment. |
| Invoice refunded | Plandalf → Kit | Native step | Remove access on refund takes the Kit tag away. The Flodesk segment stays unless you add a webhook call from Flodesk's API reference. |
Let a Flodesk segment tag the person in Kit
You need a Flodesk API key to register the webhook and a Kit V4 API key for the tag step.
Connect Kit
In Automation, Marketplace, connect Kit with a V4 key from Settings, Developer.
Create the catch trigger
In My Sequences create a sequence with the Webhook Trigger and copy its Webhook URL. Keep it private, as anyone holding it can start the sequence.
Register the Flodesk webhook
Using Flodesk's API, send a POST to its webhooks endpoint with a
name, your catch URL aspost_url, andsubscriber.added_to_segmentinevents.Capture a sample
Add a person to the segment in Flodesk. When the request arrives, choose it as the sample record on the trigger's Test tab so the variable menu shows the subscriber's email.
Add the Kit step
Add Kit, Tag Subscriber, map the email from the sample and pick a tag. Add Add Subscriber to Sequence if Kit should start emails too.
Turn it on
Run each test with a real address of your own, then switch the sequence On.
What sellers do with Flodesk and Kit (ConvertKit)
Design emails in Flodesk, paid sequences in Kit
People who buy a course through a Plandalf checkout get the Kit onboarding sequence. A Flodesk segment for the same offer is filled through the Flodesk API so its branded campaigns reach them too.
Limits and gotchas
- Flodesk's webhook documentation describes no signing secret or signature header, so rely on a private catch URL and check the fields you use.
- Flodesk webhooks are made with its API, not from a Plandalf screen, and Plandalf's Flodesk page says its workflows have no webhook step.
- Purchases do not show in Kit's purchase history. Record the product with a tag or a custom field.
- The Kit tag step creates a missing subscriber, so make sure the people arriving from Flodesk have agreed to Kit emails.
- Unsubscribes in Flodesk are reported by an event, but Plandalf has no Kit unsubscribe step, so mirror them only with a tag that Kit automation acts on.
Flodesk and Kit (ConvertKit): common questions
- Does Flodesk integrate with Kit?
- Not through Plandalf as a sync. Plandalf can connect them in practice: a Flodesk webhook starts a Plandalf sequence, and the sequence tags the person in Kit with native steps.
- How do I connect Flodesk to ConvertKit?
- Create a Webhook Trigger sequence in Plandalf, register its URL as a Flodesk webhook through the API, and add a Kit step that uses the email from the sample payload.
- Can I migrate from Flodesk to Kit using Plandalf?
- Plandalf helps during the overlap by tagging new Flodesk segment members in Kit. Importing the existing list is done in Kit.
- Which Flodesk events can start a sequence?
- Flodesk documents events for a new subscriber, a subscriber added to a segment and an unsubscribe.
Guides for this pair
Start your 14-day free trialMore from Flodesk and Kit (ConvertKit)
- Shopify + FlodeskA Plandalf offer opened from a Shopify page can end with the buyer in a Flodesk segment, through a Send Webhook step that calls Flodesk's API.
- Stripe + FlodeskStripe takes the payment in a Plandalf checkout, and a Send Webhook step can add the buyer to a Flodesk segment so a workflow emails them.
- WordPress + FlodeskFlodesk forms collect subscribers on your WordPress site. A Plandalf button on the same site adds paid buyers to Flodesk through Send Webhook.
- Next.js + Kit (ConvertKit)Next.js runs the product and the page, Plandalf runs checkout, and Kit tags and emails the buyer through native steps.
- PayPal + Kit (ConvertKit)PayPal buyers on a Plandalf checkout can be tagged in Kit and dropped into an email sequence, using the same steps as card buyers.
- Shopify + Kit (ConvertKit)Kit's Shopify app syncs the store's customers. A Plandalf offer opened from a Shopify page tags its own buyers in Kit and starts their emails.
Checked October 26, 2026 against Plandalf's own setup guides and the vendor documentation: Flodesk API reference.