License verification API for validating license keys, enforcing activation limits, and preventing key sharing for software, SaaS, plugins, and desktop apps.

Springbolt X: find the exact people who searched your keywords in the last 8 days, then target them across ads, email, and calls. Full identity suite: keyword-to-lead, IP-to-person, IP-to-company, LinkedIn-to-phone, LinkedIn-to-HEM, email-to-HEM, HEM-to-email, contact enrichment, and async batch callbacks.

This API is able to detect any spelling or grammar errors in your application. Submit text and receive a JSON response with potential errors and suggested corrections.

With this API you can check if an e-mail address is valid or invalid and if it is a temporary / disposable account. If the address is valid and it isn't a temporary email account then the "block" parameter will be false. Otherwise, it will be true.

Analyzes password security, detects compromises, measures risk, and offers recommendations and suggested secure passwords to improve protection.

This API validates email addresses, detecting disposable or forwarding domains, analyzing MX records, and providing detailed heuristic insights and risk assessment.

The Email Disposable Detect API enhances data integrity by identifying disposable domains, verifying email addresses, and minimizing fraudulent activities.

The Temporary Email Tracker API swiftly identifies and excludes disposable email addresses, bolstering data security and streamlining email communications for optimal efficiency.

The Keyword Discovery API enables accurate geographic measurements, effortlessly improving logistics, navigation, and services based on location.

Accurately verify emails by evaluating format, domain, MX, SPF, DMARC, blacklists, reliability, and detecting disposable, suspicious, or role-based emails.

The Device Detector API user agent strings to identify device, browser, and operating system details accurately.

The Disposable Email Detector API swiftly detects and removes disposable email addresses, enhancing data security and improving the efficiency of email communications.

Email Disposable Detector API checks email addresses for temporary or spam addresses to improve data quality.

"Enhance security with the Fortify Key API—craft strong, randomized passwords programmatically, fortifying applications against unauthorized access."

Transient Email Checker API: Enhance data integrity and security by instantly identifying and blocking disposable/temporary email addresses in real-time.

Shielded Key API: Tailor your security with custom password lengths, exclude numbers, and omit special characters for robust, personalized password solutions.

The Temporary Email Detection API quickly detects and filters out disposable email addresses, enhancing data protection and optimizing email workflows for greater efficiency.

The Email Temporary Analyze API quickly detects and filters out disposable email addresses, enhancing data protection and improving the efficiency of email communications.

Secure password generator creates strong passwords with uppercase letters, symbols, and defined length, providing reliable standard protection for non-encrypted systems and accounts.

The Temporary Email Checker API swiftly identifies and filters out temporary email addresses, enhancing communication security and mitigating potential risks.

License validation backend for Gumroad and direct software sellers. Verify keys, enforce activation limits, and prevent key sharing without building custom infrastructure.

Optimize software ownership with our Software Licensing Solutions API for reliable license verification and activation.

Safeguard digital products with our Digital Product Security API for robust license verification and activation.

Protect your revenue with our Key Sharing Prevention API, ensuring secure license verification and activation processes.

Validate license keys quickly with our License Key Validation API for enhanced software security and user control.

Streamline your software's security with our License Key Management API for seamless verification and activation.

FreeCustom.Email is a powerful API that enables users to generate temporary email addresses for seamless online registration and OTP testing. With its user-friendly interface, you can effortlessly create disposable email accounts to bypass spam and enhance privacy, while easily receiving one-time passwords and verification emails without any hassle. Ideal for developers and testers, this API ensures secure and anonymous interactions with online services.

🔴 Try for FREE! 🔴 ⚡The ultimate URL redirect tracking solution that provides deep insights into redirect chains with a fresh IP address for each request. Perfect for SEO professionals, security researchers, and digital marketers who need reliable redirect analysis at scale.

The Fake Email Detector API quickly detects and filters out disposable and invalid email addresses, ensuring clean and efficient email communications.

Detect disposable and temporary email addresses with a database of over 195,000 domains. Includes typo detection, email classification, role account detection, and domain age lookup via RDAP.

Securely fetch, manage, and retrieve your passwords effortlessly with the Secure Password Fetcher API.

Retrieve secure and random passwords instantly using the Fetch Secure Passwords API, ensuring robust protection.

Effortlessly create strong, random passwords to enhance security with our Secure Password Generation API.

The Text Change Detector API is an tools for comparing two texts and highlighting their differences. It offers results in JSON format and pre-rendered for HTML and CLI.

Email verification API with real SMTP RCTP TO check, DNS, disposable, catch-all, and role-based detection in a single request.

EU-Compliance: Digital Product Passport (DPP) Immutable QR Engine. Guaranteed 10-year URL persistence for Textile and Battery ESPR mandates (March 2026). High-error-correction QR generation optimized for industrial label printing. Frankfurt (EU-Central) data residency.

Robbery fake data API facilitates testing by generating synthetic theft-related data

Get valuable SEO keyword data instantly with the Retrieve SEO Keywords API, enhancing your website's search performance.

Capture essential SEO keyword insights with our SEO Keyword Insights Capture API to elevate your content strategy today!

The Multilingual Detector API is a tool that allows users to determine the language of a given piece of text with a confidence score.

Evaluate and analyze password risks with precision to protect sensitive information.

Fetch detailed password threat assessments to proactively mitigate security risks.

Assess password security risks effortlessly and enhance your cybersecurity with our API.

Access comprehensive password vulnerability data to strengthen your defenses.

Identify and eliminate disposable email addresses with the Dangerous Mail DetectorI API to ensure secure and authentic user registrations.

Analyze critical password safety metrics to safeguard user accounts effectively.

Unlock powerful analytics with the Card Type Detector API, providing vital data for informed financial decisions.

Secure Password Generator is an advanced password generator API designed for secure and customizable password creation.