Email Deliverability Tester – Know Where Your Emails Land Before You Hit Send

Run a complete inbox placement test across Gmail, Outlook, Yahoo Mail, iCloud, AWS Mail, and Zoho Mail. Validate SPF, DKIM, and DMARC in seconds, and walk away with a prioritised, step-by-step fix guide – all inside PowerDMARC.

Tested Against Real Seed Mailboxes at Top Providers

Email Provider Logo Carousel

Your email can pass authentication and still miss the inbox.

Even with SPF, DKIM, and DMARC in place, messages land in spam, promotions, or get blocked entirely. Placement depends on far more than authentication, and most teams only find out after a campaign goes out.

Provider filtering

Gmail, Outlook, and Yahoo each weigh signals differently, so the same message can land in three different places.

Sender reputation

A history of complaints, bounces, or spam traps quietly drags placement down even on a clean send.

Unsubscribe compliance

Missing one-click unsubscribe headers now breaks Google and Yahoo bulk sender rules and hurts placement.

That is the gap an email deliverability tester closes: see exactly where your mail lands, and why, before you hit send.

What Is an Email Deliverability Tester?

An email deliverability tester is a diagnostic tool that simulates a real-world send to multiple inbox providers and tells you exactly where your message landed: inbox, spam, promotions, or blocked entirely. Instead of guessing why open rates dropped after a campaign goes out, an inbox placement test gives you that visibility before the send, so you can fix authentication gaps, content triggers, or reputation issues in advance.

PowerDMARC's tester goes a step further by combining inbox placement data with full SPF, DKIM, and DMARC validation in a single workflow, covering the full scope of email deliverability testing without bouncing between standalone tools.

How It Works

1
Send a Test Email

Add your sending domain and fire off a single test to PowerDMARC’s seed mailboxes. No SMTP or DNS changes needed.

2
We Check Everything

We validate SPF, DKIM, and DMARC while measuring inbox placement across all six providers.

3
Get Your Fix Guide

Receive a Domain Security Score, per-provider placement breakdown, and a prioritised list of fixes with DNS examples. Pair it with our email deliverability best practices for long-term wins.

Core Features

Detect. Decide. Stay in control.

Domain Health Score

A composite colour-coded 0–100 score rolled up from your SPF, DKIM, and DMARC posture — giving you an instant read on how well your domain is protected.

Score scale

Excellent Good Fair Poor
Open dashboard
Domain Health Score — colour-coded Excellent to Poor scale

Inbox Placement Testing

Real seed mailboxes. No estimates, no proxy data — just an accurate per-provider breakdown of where your messages actually land.

Providers tested

Gmail Outlook Yahoo Mail iCloud AWS Mail Zoho Mail
Run a deliverability test
Inbox Placement Testing — per-provider inbox vs spam vs promotions results

One-Click Unsubscribe Check

RFC 8058 compliance check that confirms your List-Unsubscribe headers meet the Google and Yahoo bulk sender requirements — with a clear verdict and a plain-language fix if something is off.

Open dashboard
One-Click Unsubscribe Check — Pass / Fail / Warning result with fix recommendation

Guided Remediation

Every issue surfaced in the test comes paired with a prioritised fix guide — critical issues highlighted first, with copy-paste DNS record examples so your team can act immediately.

Start testing inbox placement
Guided Remediation — prioritised fix guide with copy-paste DNS examples

Historical Trend Dashboard

Track placement and authentication trends over time across all your domains — with selectable 30, 60, and 90-day windows so you can spot gradual drift before it becomes a deliverability problem.

See how it works
Historical Trend Dashboard — 30/60/90-day placement and authentication trends

CSV & PDF Export

Generate shareable, branded reports in one click — perfect for handing off to IT, compliance, legal, or client stakeholders who don't live inside the platform.

Try the tester
CSV and PDF Export — branded one-click report generation

PowerDMARC vs Standalone Tools

Most teams stitch together three or four point solutions to do what PowerDMARC handles natively. Here’s how it compares against the email deliverability tools you’re likely evaluating.

Feature Capability Comparison
Capability

Inbox placement testing across 6 providers
SPF, DKIM, DMARC validation in one view
One-click unsubscribe (RFC 8058) compliance check
Native integration with DMARC reporting
Multi-domain support out of the box
Guided remediation with DNS examples
Branded CSV and PDF exports
Continuous monitoring (not just one-off tests)
Standalone

Partial
Rarely
Limited
Limited

Frequently Asked Questions

PowerDMARC AI Assistant — FAQ
What is an email deliverability tester?
An email deliverability tester is a tool that sends a controlled message to a set of seed mailboxes across major providers and reports back whether your email reached the inbox, spam folder, or promotions tab.
How do I test email deliverability?
Add your sending domain to PowerDMARC, send a test email to the generated seed addresses, and review the report. You'll see per-provider placement, authentication results, and a prioritised list of fixes. The whole process takes a few minutes per domain.
Which email providers are tested?
PowerDMARC tests against real mailboxes at Gmail, Outlook, Yahoo Mail, iCloud, AWS Mail, and Zoho Mail, covering the providers that handle the overwhelming majority of B2B and B2C inbox traffic. Gmail and Outlook placement tend to be the most scrutinised, especially for bulk senders.
Do I need a separate tool or subscription?
No. The Email Deliverability Tester is built directly into the PowerDMARC platform, so the same login that gives you DMARC reporting also covers inbox placement testing, unsubscribe compliance, and remediation guidance. There's no separate purchase or integration to manage.
What is one-click unsubscribe, and why does it matter?
One-click unsubscribe is a header-based mechanism (RFC 8058) that lets recipients opt out of bulk email with a single action, without being forced through a landing page. Since February 2024, Google and Yahoo have required it for senders dispatching more than 5,000 messages per day to their users, and missing it can directly damage your sender reputation and Gmail inbox placement.
Can I test multiple domains?
Yes. PowerDMARC supports multi-domain testing and monitoring under a single account, with separate trend dashboards per domain. This is particularly useful for enterprises operating multiple brands and agencies managing client portfolios.

Ready to test your deliverability?

Stop guessing. Start landing in the inbox!