Bouncer
4.9 out of 5 stars
(17 Ratings)
Bouncer - The easiest to use yet the most powerful E-mail Validation and Deliverability Service.
Bouncer is a fortress-like secure (GDPR compliant) Email Verification and Deliverability platform trusted by thousands of companies across 6 continents. Founded in 2017, Bouncer helps businesses improve human-to-human email communication by ensuring every message has the best chance of reaching the inbox.
Bouncer is a technological leader in email verification.
Both list and API verification are top-notch, backed by a zero-downtime policy, industry-leading coverage, and high performance (up to 200,000 verified emails per hour per customer). Beyond verification, Bouncer helps protect signup forms with Shield, automates list hygiene with AutoClean, improves inbox placement with Deliverability Kit, detects risky addresses with Toxicity Check, and connects seamlessly with a growing library of integrations.
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UserCheck
UserCheck is a real-time email validation API that detects and blocks disposable, temporary, and suspicious email addresses and domains so tools can focus on genuine users and reduce fake sign-ups and abuse. It verifies whether an email or domain is valid, active, and trustworthy, checks domain reputation, identifies public email providers, relays, role accounts, and offers smart suggestions for common typos, syntax validation, and bulk processing of large lists. UserCheck continuously updates its disposable email database and enhanced validation rules, and it integrates seamlessly via a simple REST API with predictable JSON responses for efficient, low-latency verification workflows. It scales to handle high volumes of requests without performance degradation and offers organizational features like environment separation for development, staging, and production workflows. Additional capabilities include custom blocklists, webhooks, and integrations with tools.
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TrustLookup
TrustLookup is a hosted API and web dashboard for checking phone numbers, email addresses, IP addresses and domains. The API identifies each value and returns results for selected checks. Phone checks cover validity, format and line type; paid-plan lookups add the current carrier, number portability and live HLR status. Email checks assess syntax, mail servers, mailbox response, disposable and role addresses, and catch-all domains. IP results include location, network and ISP, hosting, VPN, proxy and Tor indicators, plus a free public spam-blocklist check. Domain lookups provide WHOIS and age information. Free tools check SPF and DMARC records and provide VIN, NPI and USDOT lookups. Users can check items in the browser, call the API or upload CSV files for bulk processing. Paid plans include Pro phone lookups and CSV uploads; Growth and Scale add webhooks, and Growth includes five team seats. The service supports developers and teams reviewing signups, contact data and risk.
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Email-Validation.org
Email-Validation.org is a web-based email verification service for businesses, marketers, and developers. It checks individual addresses through a REST API and accepts bulk lists through its dashboard and API, returning statuses and reasons to help users identify valid, invalid, risky, or unresolved addresses before using a mailing list. The service includes a credit-based usage model, webhooks, a JavaScript/TypeScript SDK, and a remote Model Context Protocol server for compatible AI clients. Users can validate addresses, submit bulk jobs, inspect results, and manage credits. Credits are purchased in one-time packs rather than a standard subscription; each credit covers one address, unresolved results are free, and purchased credits remain valid for 24 months. New accounts can receive up to 500 free credits, subject to signup eligibility. The service is intended for business email-list hygiene and application workflows.
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