FormLynk — Connect your forms. Send anywhere.
PLATFORM CAPABILITIES

Engineered for every form requirement.

From simple portfolio contact forms to complex multi-step job applications with resumes and real-time CRM webhook synchronization.

06PLATFORM CAPABILITIES

Architected for developer workflows.

Everything you need to capture, validate, protect, deliver, and automate form submissions at scale.

SCHEMA ENGINE

Dynamic Form Field Builder

Define custom validation rules, required fields, regex patterns, numeric bounds, and file attachment limits visually without altering your frontend code.

10+ Built-in Field Types
Regex and Range Validation
Live Interactive Preview
KEY ISOLATION

Browser Public vs Server Private Keys

Browser Public keys (pk_live_) are scoped strictly to frontend form ingestion and secured via Origin whitelisting. Server Private keys (sk_live_) handle backend server-to-server operations.

Environment Segregation (Live & Test)
Granular Project Scoping
One-Click Instant Revocation
CORS SECURITY

Domain & Origin Protection

Prevent unauthorized third-party websites from spamming your API key. Any browser submission from an unapproved hostname is immediately blocked with 403 INVALID_ORIGIN.

Multiple Domains per Project
Localhost Staging Support
Zero Config CORS Handling
ANTI-SPAM SHIELD

Honeypots & Cloudflare Turnstile

Silent _gotcha honeypot traps automated bots without frustrating human visitors. Optional Turnstile or reCAPTCHA verification adds cryptographic bot resistance.

Silent Honeypot Trap (_gotcha)
Cloudflare Turnstile & reCAPTCHA
IP Blacklist & Rate Limits
RELIABILITY

Asynchronous Email Delivery

Submissions are committed to storage first in under 24ms. Notification emails and auto-replies are queued and retried automatically with exponential backoff (10s, 60s, 300s).

Sub-24ms API Response
Exponential Retry Backoff
Dedicated SMTP Configuration
AUTOMATION

Outbound HMAC Webhooks

Push leads directly into Zapier, Make, Slack, HubSpot, or custom web services with verifiable HMAC-SHA256 signature headers on creation, processing, or failure.

HMAC-SHA256 Signature Header
Event Filtering
Delivery Audit Logs & Retries
MANAGEMENT

Submission Vault & CSV Export

Search, filter, and inspect captured form submissions with public-safe UUIDs. Export clean CSV spreadsheets with a single click.

Public-safe UUIDs (sub_...)
Status Filtering
One-Click Instant CSV Export
STORAGE SAFETY

Secure File Uploads

Safely receive resumes and documents. Executable file extensions (.exe, .php, .sh) are blocked, MIME types verified, and files assigned private UUID names.

Executable Blacklist Enforcement
MIME Type Sanitization
Private Storage Outside Webroot
CUSTOMIZATION

HTML Templates & Dynamic Tags

Design branded notification emails and auto-replies using dynamic template variables like {{name}}, {{email}}, {{message}}, and custom fields.

XSS-Sanitized HTML Rendering
Submitter Auto-Reply Confirmations
Custom Dynamic Field Tags
13VISUAL SCHEMA DESIGNER

Build validation schemas without backend code.

Create field types, regular expressions, required constraints, and attachment limits visually. The API validates all submissions against your schema before saving.

FIELD BUILDER: Form Slug [contact-us]
CONFIGURED FIELD RULES (5)DRAG TO REORDER
⋮⋮
Full Namekey: full_name | type: text
REQUIRED
⋮⋮
Work Emailkey: email | type: email
REQUIRED
⋮⋮
Phone Numberkey: phone | type: phone
OPTIONAL
⋮⋮
Project Detailskey: message | type: textarea
REQUIRED
⋮⋮
Resume (PDF/DOC)key: resume | type: file
OPTIONAL
LIVE CLIENT PREVIEWAUTO-SYNCED
Upload Resume (PDF/DOC) (PDF, DOCX up to 10MB)
10HTML TEMPLATE ENGINE

Branded notification & auto-reply emails.

Craft responsive HTML email notifications for your team and automated confirmations for your submitters with dynamic template tags and automated XSS sanitization.

TEMPLATE: Admin Notification (Contact Us)
NEW SUBMISSION RECEIVED

Contact Us Form

sub_8f92ab31c4e2
From Name:Jane Developer
Email Address:jane@example.com
Submitted At:Sep 26, 2026, 15:20 UTC
Message:
Hello! We are looking to replace our legacy backend contact forms with FormLynk across our Next.js client deployments.
Reply-To header set to jane@example.com. Direct replies will reach the submitter.
11SMTP INFRASTRUCTURE

Bring your own SMTP or use our shared mailer.

Every project workspace can connect its own dedicated transactional SMTP credentials. Passwords and API tokens are encrypted at rest with AES-256.

SendGrid

Supported

Connect your SendGrid API key or SMTP user with TLS authentication.

smtp.sendgrid.netPort 587 / 465

Postmark

Supported

Ultra-fast transactional deliverability with Postmark server tokens.

smtp.postmarkapp.comPort 587 / 2525

Amazon SES

Supported

Low-cost high-volume deliverability via your dedicated AWS SES credentials.

email-smtp.*.amazonaws.comPort 587 / 465

Mailgun

Supported

Custom domain routing with Mailgun SMTP credentials per project.

smtp.mailgun.orgPort 587

Brevo (Sendinblue)

Supported

European data-residency compliant transactional relay integration.

smtp-relay.brevo.comPort 587

Default Shared Mailer

Included Free

Zero configuration needed. Included out-of-the-box on all plans.

System Managed RelayPort Encrypted Queue
SMTP passwords and authorization secrets are strictly encrypted at rest inside the database using AES-256-CBC.

Start capturing form leads in minutes.

Free tier includes 500 submissions/month, CORS origin protection, and honeypot spam traps.

Create Free Account