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Email Deliverability Test
See Where Your Emails Land Before You Send
Run a free email deliverability test across Gmail, Outlook, Yahoo, and 50+ providers to see where your emails land and what may be hurting inbox placement.
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How the deliverability test works
Run a free email deliverability test across Gmail, Outlook, Yahoo, and 50+ providers to see where your emails land and what may be hurting inbox placement.
Choose your sending source
Run the test from an email account or from your platform. It works with common systems like Mailchimp, SendGrid, Outlook, Google Workspace, sales engagement platforms, CRMs, and other sending tools.
Copy the seed list
Copy the monitored addresses and paste them into a new message from the account or system you want to test.
Send your test email
Send the message, then review your full deliverability report. In just a few minutes, you will see where the email landed and what may be affecting your email deliverability.
What your deliverability report shows
Your deliverability report is built to be useful, not vague. It helps you understand how your email performed, what likely caused the result, and what to fix first.
If the issue goes beyond the test result, EmailWarmup.com can help with warmup, mailbox health monitoring, authentication review, and expert deliverability guidance. Your report includes:
- Inbox placement tests by provider
- Sender reputation and domain reputation signals
- Authentication issues tied to SPF, DKIM, DMARC, and DNS records
- Whether the message reached the primary inbox, promotions folder, spam folder, or was undelivered
- A short list of actionable insights to fix deliverability issues
- Spam score and content analysis flags
Get a Detailed Inbox Placement Breakdown
Your email deliverability test shows exactly where emails land across these providers:
Primary inbox
This is the best result. Your email reached the main inbox, where it has the strongest chance of being seen, opened, and acted on.
Promotions tab
This usually means the message was accepted but classified as promotional. For many email campaigns, that still counts as delivery, but it often reduces visibility and user engagement.
Spam folder
This means the email triggered enough concern for spam filters. That can be caused by weak sender reputation, suspicious content, list quality, or technical setup issues.
Undelivered
This is the most serious result. It often points to authentication failures, broken DNS records, blacklist issues, or severe domain reputation problems.
How to interpret your test results
Understanding filter mechanics helps you work with the system instead of against it. Modern spam filtering uses multiple layers, not just keyword scanning.
Your report shows more than just inbox vs. spam placement. It reveals reputation signals, authentication gaps, and engagement risks that impact performance.
See what a demo report looks like
What the test checks
This email deliverability testing tool checks the important factors that influence inbox placement across major providers.
Authentication and DNS records
We review SPF, DKIM, DMARC, related DNS records, and other setup signals that affect trust. Where relevant, we also check whether your unsubscribe link and supporting headers are correctly configured.
Sender and domain reputation
We look for signs that your sender reputation or domain reputation may be limiting delivery. This includes trust signals, blacklist indicators, and provider-specific sensitivity.
Content analysis and spam filters
We flag content patterns that can affect placement, including broken links, suspicious formatting, excessive capitalization, poor text-to-image balance, weak subject line structure, and other signals commonly picked up by spam filters.
List quality, bounce rates, and spam complaints
We look for list-quality risks that affect email deliverability, including invalid addresses, stale contacts, bounce rates, and spam complaints. Good list hygiene helps avoid bounces, reduce complaints, and protect long-term sender health.
Test 50+ Mailbox Providers Your Prospects Use
Most email deliverability test tools check 3–5 providers. EmailWarmup.com tests 50+ mailbox providers, including regional email service providers where your international prospects read emails every single day. These are the inboxes many competitors ignore because they do not know these providers exist.
| Provider | Provider Type | Details |
|---|---|---|
 Gmail | Primary | Personal and Workspace tested separately |
 Outlook / Microsoft 365 | Primary | Consumer and business configurations |
 Yahoo Mail | Primary | Used by 20% of B2B decision-makers |
 Apple Mail / iCloud | Primary | 46% of email opens |
 Zoho Mail | Business | Popular with SMBs internationally |
 ProtonMail | Business | Encrypted, security-conscious industries |
 FastMail | Business | Preferred by tech companies |
 Custom domains | Business | Your unique infrastructure |
 GMX | Regional | 40M users in Germany/Europe |
 Mail.ru | Regional | 100M+ users in Russia/Eastern Europe |
 QQ Mail | Regional | 900M users in China |
 40+ others | Regional | Asia, Europe, Latin America, Middle East |
Who this test is for
This free test is best for senders where inbox placement has real commercial or operational impact. This page is not built mainly for low-volume occasional senders or users looking only for a basic spam checker. It is designed for teams that need a practical signal before sending broadly.
B2B sales teams launching cold email campaigns
Verify inbox placement before burning prospect lists, because one bad campaign can damage domain reputation and reduce future replies.
SaaS companies scaling email acquisition
Test new sequences before sending to 50,000+ prospects, so spam triggers and placement issues are caught before reputation damage compounds.
Lead generation agencies managing multiple client domains
Monitor deliverability across client accounts, so weak domains, spam placement, and authentication issues are caught before campaigns underperform.
E-commerce businesses running promotional campaigns
Check whether marketing emails reach the primary inbox, promotions tab, spam folder, or fail completely before revenue campaigns go live.
Recruitment agencies contacting passive candidates
Verify cold outreach lands in inboxes before prospects move to competitors, since candidates rarely check spam folders for job opportunities.
Marketing teams with dropping open rates
Diagnose whether lower engagement comes from email content, list quality, sender reputation, or inbox placement issues.
Founders launching new domains
Start with proper authentication and baseline deliverability test data before increasing volume from the new sending infrastructure.
What it can tell you
What it cannot fully prove
What to do after your test
The right next step depends on what the report shows.
If results are strong
Keep sending carefully, maintain list hygiene, and re-test before major changes.
If results are mixed
Review the flagged issues, optimize content, fix setup problems, and run the test again.
If results are poor
Do not keep pushing volume. Fix deliverability issues, clean the list, reduce complaint risk, and review your domain and reputation setup first.
If you are using a new domain or IP
Warm it up gradually. New infrastructure needs time to build trust with providers.
If the issues look deeper
Book expert help. Some deliverability problems need more than a test, especially when reputation, blacklists, or multi-platform configuration are involved.
Frequently asked questions
about our Email Deliverability Test
Here’s everything you need to know about our free email deliverability test:
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