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InboxGreen.email

Free email deliverability checker for SPF, DKIM and DMARC. Find and fix why your business emails go to spam.·inboxgreen.email

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InboxGreen.email is a web-based email deliverability diagnostic tool that checks SPF, DKIM, DMARC, List-Unsubscribe headers, blacklist status, and DNS record health for a domain. It gives plain-English explanations of failures, a Domain Health Score, and ready-to-paste DNS fix records for major DNS and email providers. Paid plans add ongoing monitoring, alerts, history export, and white-label PDF reporting for agencies.

What it's for

Check whether SPF, DKIM and DMARC are correctly configured for a domainDiagnose why emails are going to spamGenerate SPF and DMARC DNS recordsGet ready-to-paste DNS fix records for providers like Cloudflare, Namecheap, Google Workspace and Microsoft 365Check if a domain is on an email blacklistMonitor domains daily for authentication breakage and get alertsProduce white-label deliverability PDF reports for clientsTrack deliverability history and export CSV reports

Features 17

API access
CSV export of check history
Daily deliverability monitoring with email alerts
Deliverability badges
DKIM signature checking across common selectors
DMARC policy and alignment analysis
DMARC record generator
Domain blacklist checking against major blocklists
Domain Health Score (0-100)
List-Unsubscribe header checking (RFC 8058)
Multi-domain monitoring dashboard
Ready-to-paste DNS fix records tailored to provider and registrar
Shareable domain report URL
SPF record generator
SPF record validation
Weekly compliance summaries
White-label PDF deliverability audit reports

At a glance

free tierAPI

TypeWeb app

DeploymentCloud

PlatformsWeb

LanguagesEnglish

ForSaaS founders and developers, marketing teams, agencies managing client domains, Shopify store owners, founders and operators

CompanyEPE Tech Solutions

Integrations

CloudflareNamecheapGoogle WorkspaceMicrosoft 365SendGridMailgunZoho MailMailchimpShopify

Resources

Pricing

FixKit is a one-time $29 purchase with no subscription. Monitoring ($19/mo) and Agency ($99/mo) are monthly subscriptions with no long-term contract and a 7-day money-back guarantee. There is no free trial for paid plans.

Free CheckFree

Core SPF/DKIM/DMARC/blacklist checker is free and unlimited.

Unlimited free domain checks, no signup required

FixKitQuote

One-time purchase, no ongoing subscription.

One-time fix for a single checked domain

Monitoring$19/mo

Monthly subscription, no long-term contract, no free trial.

Monitor up to 5 domains

Agency$99/mo

Monthly subscription; described as best per-domain value (30 domains at $99/mo = $3.30/domain).

Monitor up to 30 domains