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The Best SPF Validation Tools

Check your SPF records to make sure your email sending services are correctly authorised.

  • 🛡️ SPF Validation
  • 🔏 DKIM Validation
  • 📊 DMARC Reporting
  • 🔎 DNS Monitoring
  • 🏷️ BIMI Support

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Mailwarm

Email warmup tool to avoid the spam folder

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Email Spam Tester

Which folder newsletter lands? Spam or inbox?

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Miss Wrench

Free SPF, DKIM, DMARC and BIMI checker

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Get a 14-day trial + 20% OFF for 3 months.

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Every week we share resources for newsletter creators and recommended newsletters.

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Popular Articles

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7 Newsletter Design Mistakes and How to Avoid Them

There are a lot of common mistakes email newsletters make when designing their layout that could be hurting their performance

Email Deliverability for Newsletter Creators: The Full Guide to Reaching the Inbox

Deliverability is what turns writing effort into actual reach. It is the invisible system that determines whether your subscribers receive your newsletter where it matters most.

The State of Newsletters In 2025

This is the 6th annual State of Newsletters report. If it's your first one, these reports are based on the newsletters submitted to InboxReads and data from our user base.

What's New in InboxReads - November 2025

Create personal newsletter collections, add sponsorship links & multiple images, and bring your entire team.

What's New in InboxReads - September 2025

InboxReads now lets you export newsletter data to plug into your own software, view competitor metrics, and more!

Get a 14-day trial + 20% OFF for 3 months. Promoted

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