Email Signup Form
Flexform generates a email signup form focused on list growth and attribution — UTM parameter capture, source attribution to the CRM, and instant tagging in Mailchimp, HubSpot, or Klaviyo based on the offer.
Built for Your Email Signup Form
- UTM source, medium, campaign, term, and content capture on every submission
- Referring-URL and embed-parent capture for multi-touch attribution
- Mailchimp, HubSpot, and Klaviyo native tagging based on offer
- Progressive profiling — returning visitors skip already-known fields
- GDPR-conscious consent capture with double opt-in flow
What FlexForm Does for Your Email Signup Form
- FlexForm generates a complete email signup form from a plain-English description in under 60 seconds.
- FlexForm connects directly to HubSpot, Salesforce, Slack, and Google Sheets — no Zapier middleware required.
- FlexForm's Starter plan is free and includes 100 submissions per form. The Founders plan starts at $1/month with unlimited submissions.
- FlexForm supports 44 element types including text fields, signatures, file uploads, payments, conditional logic, and multi-step navigation.
- FlexForm embeds on any website via inline, popup, slider, or fullscreen modes with a single script tag — no plugin required.
- FlexForm ships native SDKs for Android (Kotlin/Compose), iOS (Swift/SwiftUI), Kotlin Multiplatform, and Flutter — server-driven UI updates forms without app store releases.
How to Build Your Email Signup Form in 60 Seconds
Describe your form
Type what you need — e.g. "Build a email signup form with the most relevant fields for this use case. Conne..." — in plain English.
AI generates everything
FlexForm builds the fields, validation, conditional logic, and workflow integrations in one pass.
Publish and connect
Embed on your site and Connects to HubSpot, Slack, and Google Sheets automatically — without Zapier.
Common Fields in a Email Signup Form
The AI selects field types automatically. You can add, remove, or reorder fields after generation.
Email Signup Form Use Cases
Email Signup Form for newsletter signup
A minimal ${h1} on the blog captures email + first name. Subscribers land in Mailchimp with the correct tag based on which post they signed up from — attribution retained through UTM.
Email Signup Form for ebook or lead magnet
Prospects trade contact info for a gated PDF. Download link emails immediately; the lead lands in HubSpot with the content topic and UTM captured for lead scoring.
Email Signup Form for waitlist collection
Pre-launch waitlist signups get a queue position, a shareable referral link, and a confirmation email. Signups sync to Loops or Customer.io for the launch-day blast.
Email Signup Form + HubSpot, Slack & Sheets
Connects to HubSpot, Slack, and Google Sheets every time someone submits. No Zapier, no Make, no middleware — FlexForm connects directly via API.
Frequently Asked Questions
Does the email signup form capture UTM parameters?
Yes. Flexform captures all standard UTMs (source, medium, campaign, term, content) plus the referring URL and embed parent. The full attribution chain flows into the CRM record.
Can the email signup form sync to Mailchimp with a tag?
Yes. Flexform maps email signup form submissions to a Mailchimp audience with a tag per lead magnet or campaign — enabling segmented follow-up sequences.
Does the email signup form support double opt-in?
Yes. Enable double opt-in and Flexform sends a confirmation email. Only confirmed subscribers sync to the ESP, keeping list health high.
Can the email signup form handle progressive profiling?
Yes. When a returning visitor is recognized (via cookie or login), already-known fields hide and only new questions show. This lifts completion rates on repeat submissions.
Build Your Email Signup Form Now
Free plan available. No credit card required. Live in under 60 seconds.