InboxGreen
InboxGreen is a free email deliverability checker that tests SPF, DKIM and DMARC records for any domain instantly, no account required. It shows exactly which DNS records pass, fail, or are missing, and explains what each result means for inbox placement.
The platform includes 28 free DNS tools: DMARC analyzer, DMARC policy tester, SPF generator, SPF tester, DKIM generator, DKIM checker, DKIM selector finder, blacklist checker, email header analyzer, MX lookup, TXT lookup, WHOIS lookup, reverse DNS, DNS propagation checker, SMTP port checker, IP address info, and more.
For teams that need to fix issues, the FixKit provides step-by-step DNS fix instructions for every problem found. The Monitoring plan watches up to 5 domains and sends alerts the moment SPF, DKIM or DMARC breaks. The Agency plan covers up to 30 domains with white-label PDF reports.
Built for developers, marketers, and anyone who sends email and needs it to actually reach the inbox.
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Mailora
Mailora is a modern email deliverability intelligence platform designed to help businesses ensure their emails reach the inbox instead of spam. Built for marketing teams, growth teams, and email operations professionals, Mailora provides deep insights into email performance across global ISPs, devices, and user environments.
The platform offers advanced inbox placement testing, real-time deliverability monitoring, and actionable analytics that help teams identify why emails fail to reach the inbox and how to fix those issues quickly. With Mailora, organizations can track sender reputation, analyze spam filter behavior, and monitor authentication standards such as SPF, DKIM, and DMARC.
Mailora simplifies complex deliverability challenges by turning technical data into clear, easy-to-understand insights. This allows teams to optimize their email campaigns, improve engagement rates, and protect their sender reputation.
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Bouncer
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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WillItInbox
WillItInbox is an email deliverability and validation platform for SaaS teams, developers, agencies, marketers, and newsletter operators that depend on outbound email.
Teams can generate a unique test inbox, send a real message from their app or ESP, and receive a practical deliverability report across SPF, DKIM, DMARC, BIMI, DNS, reverse DNS, blocklists, TLS, headers, content, links, reputation, and sender infrastructure.
WillItInbox also validates individual emails and bulk CSV lists using syntax, DNS/MX, disposable, role, typo, provider, catch-all, SMTP, suppression, and confidence signals. It includes domain monitoring, DMARC report analysis, sending source visibility, provider reputation checks, API keys, webhooks, scheduled checks, incident diagnostics, inbox placement checks, team workspaces, and exportable reports.
Paid plans start at $39/month. PAYG credits are available for extra email validation and deliverability testing usage.
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