⌁Flow Builder

Form Builder block in Flow Builder

Ask a question, validate the response type and save the result to a chosen destination.

2 min readUpdated November 2, 2026

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Block simulation: Form BuilderThis block uses the same visual structure as the real Flow Builder.

InputQuestion: “What is your phone number?”

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Form BuilderCollect and store contact information

Phone · “What is your phone number?”

Yes Timeout

OutputValid response received and saved

Select “Run simulation” to see an example.

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Actual settings panel for the “Form Builder”

The same Flow Builder settings structure; this educational preview does not save anything.

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What does each field do?Required/optional status follows the Flow Builder's actual validation rules.

Question textRequired

The question sent to the contact.

If empty: Cannot be empty in an active flow.

Input typeRequired with default

Name, email, mobile, text, number, date, yes/no or a choice from options.

If empty: Cannot be empty; the default is Text.

Response required?Required with default

Choose whether the user must provide a valid response.

If empty: The default is Yes.

Maximum wait timeRequired with default

Between 5 minutes and 24 hours to receive a response.

If empty: Cannot be empty; a default value is provided.

OptionsConditional

Choice input requires at least 2 options; yes/no options are generated automatically.

If empty: Choice input cannot have fewer than 2 valid options.

Variable keyOptional

Use this to reference the response by a specific variable name later in the flow.

If empty: May be empty.

Save destinationRequired with default

Contact profile, custom field, tag or no storage.

If empty: The default is Contact profile.

Profile fieldConditional

Only for profile storage: for example, name, email, mobile, city or contact stage.

If empty: A field must be selected for profile storage.

Custom field ID/titleConditional

Only when the destination is a custom field.

If empty: At least the field ID or title must be completed.

Invalid response messageOptional

The message shown when a response does not match the input type.

If empty: May be empty.

Ask a question, validate the response type and save the result to a chosen destination.

When to use this block

Use for structured input such as a name, phone, email, number, date or selection.

Settings, step by step

1 — Question

Write a clear, short question.

2 — Input type

Choose name, short text, long text, email, phone, number, date, date and time, yes/no or options.

3 — Required response

Make the answer required or optional.

4 — Maximum wait

If no reply arrives, follow the timeout output.

5 — Button choices

Define standard answers for selection questions.

6 — Save destination

Store in a profile field, custom attribute or tag, or use it only for flow continuation.

Inputs

User response

Outputs and continuation

Response received
Wait timed out

Practical example

Ask for a phone number, save only valid input and route to follow-up if no response arrives before timeout.

Tips

Ask for one specific piece of information per question.
Buttons are more reliable than free text for a limited selection.

Troubleshooting

A wrong input type can reject a valid response.
Without a timeout route, a user can remain suspended in the flow.

Related blocks

Save Contact Information
Condition / Filter
Scheduled Follow-up

Test before activation

Question: “What is your phone number?” → Valid response received and saved

Open Flow Builder →

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