Connect Fluent Forms. Send every lead to Moosend.

Connect Fluent Forms to Moosend

Connect Fluent Forms to Moosend and every form submission becomes a subscriber in the Moosend mailing list you choose. ClickSyncr for Moosend adds a native Fluent Forms integration with per-form feeds: connect your API key once, pick a mailing list, map your fields, save. No code and about two minutes per form.

Before you begin

You need three things: the ClickSyncr for Moosend plugin activated, Fluent Forms active, and a Moosend account with permission to create an API key. The key is stored once and shared across every supported builder on the site.

Get your Moosend API key

1. Log in to Moosend (identity.moosend.com) and go to More → Settings → API key.
2. Copy the account API key.
3. Paste it into any ClickSyncr Moosend panel. One key serves the whole site: once one builder saves it, every other builder reuses the connection automatically.

Treat the key like a password. Anyone holding it can read and modify your Moosend audience.

Fluent Forms setup, step by step

1. Open the form’s integrations. Edit a form, then Settings & Integrations → Marketing & CRM Integrations, and add Moosend (ClickSyncr).
2. Configure the feed. Pick the mailing list, set the email field, map the rest, and keep the feed enabled.
3. Optional: set a consent field. Set an optional consent field (a checkbox, acceptance or radio). When a visitor leaves it unticked, nothing is sent to Moosend at all: by design, no subscriber record, no email. The same applies when you set the form’s status to Not synced.
4. Save the feed. Every new submission now syncs to Moosend.

Email, name, and mailing list fields

Every builder maps the same schema: Email (required), the standard Name field, and the selected mailing list’s custom fields (phone, company and any you define), mapped by their Moosend names with each field’s type shown, including number and date types. Moosend matches subscribers by email, so a repeat submission updates the same subscriber instead of creating a duplicate. An unmapped field is simply skipped and never overwrites existing data with a blank value.

Subscriber status and double opt-in

The form’s subscriber status controls Moosend’s confirmation email directly: Added right away skips it, and Use list setting lets the mailing list’s own Moosend double opt-in decide. Fields are per list too: pick a mailing list and the mapping rows show that list’s own custom fields, with number and date types marked.

Verify the sync

Submit the form on the front end (not the admin preview) with a test address you can recognise, filling every mapped field. In Moosend, open the mailing list and search for your test address under its members. With Use list setting on a double opt-in list, the subscriber appears after they click Moosend’s confirmation email. Back in WordPress, the ClickSyncr entry in the admin bar shows per-form sync counts and the last error, if any: a quick pulse check without leaving the site.

Troubleshooting

Does this work with the free Fluent Forms?

Yes. The Moosend (ClickSyncr) integration registers in the free Fluent Forms as a native integration feed.

Can one site sync several forms to Moosend?

Yes. Each form carries its own feed with its own mailing list and mapping, all sharing the one site-wide key.

Other form builders

ClickSyncr for Moosend also connects Contact Form 7 · WPForms · Gravity Forms · Ninja Forms · Formidable Forms · Forminator. Overview and features: Moosend integration for WordPress. Browse all ClickSyncr integrations.

“Moosend” is a trademark of its owner. ClickSyncr for Moosend is an independent integration and is not affiliated with, endorsed by, or sponsored by Moosend or Sitecore.

Frequently asked questions

What should I check when Moosend reports rate limiting?

The current client reports “Moosend is rate limiting this site, so this submission was not sent.” when the service refuses requests at its limit. Do not treat that as a successful Fluent Forms sync or keep sending test submissions in quick succession. Check the recorded outcome and selected list, allow the limit to clear, and then submit a controlled test with a contact you can inspect.

Why can a selected consent answer still be treated as not given?

The consent check considers both the answer and its field type. Blank answers and explicit negative values do not count. Recognized checkbox inputs accept a nonempty positive selection, while other inputs need a recognized affirmative value, such as yes or true. If your Fluent Forms form uses a radio or select input, inspect the submitted value as well as the visible label before testing again.

Why can Moosend report no mailing list selected after I change the form?

The Moosend client needs a valid list identifier, not just a list name. It rejects a missing or malformed identifier with “No mailing list selected.” Return to the Fluent Forms integration, choose the intended list from the account’s loaded options, and save the configuration. Then check the mappings for that list and run a fresh test rather than copying a list name into another setting.