Free Spam Tests

Deliverability test is a proven and effective to know if your email is in spam or promotion.

free deliverability tests


  • 1 min setup: send your email to only two addresses
  • Spam placement detection
  • DNS Analyzer (DMARC, SPF, DKIM)
  • Promotion placement detection
  • Outlook and Gmail supports
  • Regularly rotated and vetted addresses. We work hard to make sure these addresses are reliable
  • We tell you why you’re in spam so you can fix it
  • We check your deliverability continuously with our beacon
  • 5 free tests/month

Nicolas and Marcus are email experts. They have been at it for over 20 years. We believe you deserve to know if your emails are in spam.

This is why we built Inboxbooster as a free and reliable service. Contact us.

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