Sender Formidable Forms

Sender + Formidable Forms Integrations, Built by an AI Agent

Put Sender + Formidable Forms to work with AI and enterprise-grade automation

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See the kind of workflows teams build with Sender and Formidable Forms below — describe the exact one you want above and the Agent builds it on demand.

Sender + Formidable Forms When a subscriber joins a group in Sender, sync user details with Formidable Forms. See details
Add new form respondents to mailing lists When a user submits a response in Formidable Forms, automatically create or update their subscriber details in Sender and add them to the appropriate marketing list. See details
Send confirmation emails after survey submission Once a survey is completed in Formidable Forms, immediately send a transactional follow-up email from Sender to thank the respondent. See details
Pre-populate survey respondents from engaged email clicks When a subscriber clicks a promotional link in Sender, automatically create a respondent record in Formidable Forms to streamline their survey experience. See details

Browse the full workflow library →

Looking to achieve something else with Sender and Formidable Forms?

Just describe what you need — the Agent researches both APIs and builds the real automation on demand.

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Triggers & actions for Sender and Formidable Forms

Everything Sender and Formidable Forms can do inside a workflow — the triggers that start one and the actions that run when it fires.

Sender Explore Sender →

Sender is an email marketing platform that allows businesses to create, automate, and deliver email newsletters and SMS campaigns.

Triggers
New Campaign

Triggers when a new campaign is created.

New Subscriber

Triggers when a new subscriber is added.

New Group

Triggers when a new group is created.

New Subscriber in Group

Triggers when subscriber is added to group.

New Unsubscriber

Triggers when a subscriber unsubscribes.

New Unsubscriber From Group

Triggers when a subscriber is removed from a group.

Actions
Add / Update Subscriber

Adds a new subscriber. If subscriber with the same email exists, updates the subscriber's data.

Add Subscriber to Group

Adds a subscriber to a group.

Create Campaign

Creates a draft campaign

Remove Subscriber From Group

Removes a subscriber from a group.

Send Campaign

Sends a draft campaign.

Send Transactional Campaign

Send a transactional campaign to one subscriber.

Formidable Forms Explore Formidable Forms →

Formidable Forms is an advanced WordPress form builder plugin used to create complex forms, surveys, and web calculators.

Triggers
Delete Entry

Triggers when an entry is deleted.

New Entry

Triggers when a new form is submitted.

Actions
API Request (Beta)

This is an advanced action which makes a raw HTTP request that includes this integration's authentication.

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Customer Stories

See how leading technology firms are scaling their operations

Amazing Product With Exceptional Support from the team. By using Knit we managed to speed up our development by orders of magnitude.
H
Huynh H
Developer, Multiplier
A brilliant tool to let you seamlessly integrate with many different systems. It is very easy to integrate with and customer support is next level.
J
Jayesh
Co-Founder, Scrut
Seamless integration experience. Well-documented, self-explanatory APIs, and excellent service and support.
P
Poorvi
Product Manager, Onsurity
Easy to integrate. Knit's dashboard is intuitive for setting up and testing integrations, and the sandbox is extremely useful during development.
A
Aditya
Product Lead, RazorpayXPayroll
Knit shipped a brand-new Timesheet API in a week and handed us a ready-to-use NetSuite sandbox. That velocity is priceless when you're running payroll in 40+ countries.
R
Rohit Singh
GM, Payoneer Workforce Management

#1 in Ease of Integrations

4.9 out of 5 stars

4.9 out of 5 stars on G2

G2 Leader, Spring 2026G2 Fastest Implementation, Spring 2026G2 High Performer, Spring 2026G2 Best Est. ROI, Spring 2026
FAQ

Common questions about Sender + Formidable Forms

Is there a pre-built Sender + Formidable Forms automation?

Not yet, but Knit's Integrations Agent can build one — describe what you want and it researches Sender and Formidable Forms's public API docs (or your own uploaded docs) and builds a working automation.

Does this require a pre-built Sender or Formidable Forms connector?

No. The Agent works whether or not Sender or Formidable Forms already has a pre-built connector in Knit's catalog — it researches the real API surface either way.

How long does it take to build?

Minutes to build a first working version, not weeks — you test it against real data before it goes anywhere near production.

What happens when someone completes a survey in Formidable Forms?

You can automatically add or update their contact profile in Sender and assign them to specific mailing lists based on their survey answers.

Can email engagement in Sender initiate a survey request?

Yes, when a contact clicks a specific link in Sender, you can automatically add them as a respondent or send them a transactional email linking to a relevant Formidable Forms form.

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