Automate your email spam testing with MailReach’s easy-to-integrate API.

Ensure your emails stay out of spam folders and improve your campaign success rate with MailReach’s Spam Test API—simple, fast, and powerful.

Simple, automatic, and reliable spam testing. Just plug in and test.

Integrate the API

Easily add MailReach to your workflow. Our simple REST API is ready to go with detailed docs and support.

Run tests

Automatically test your emails for spam triggers, content issues, and sender reputation concerns.

Get actionable insights

Instantly get results with recommendations to fix any spam-related problems, so your emails can land safely in inboxes.

Optimize and send

Apply the fixes, optimize your email strategy, and send with confidence knowing your emails will pass the spam test.

Connect our email warm up API with the tools you use.

Run your first test
Run your first test

Why MailReach Spam Test API? Because inbox placement shouldn’t be left to chance.

Customizable Tests

Tailor spam checks to fit your needs, and stay ahead of any deliverability issues.

Instant Feedback

Get a spam score and actionable insights into your inbox placement. So you can find and fix issues before they become problems.

Reliable Results You Can Trust

Get scores that truly reflect your inbox placement. Don’t settle for a vague score based on unreliable tests. Know exactly where your emails land, with MailReach’s balanced mailbox distribution across providers.

Super Simple Integration

Add our API to your existing setup with minimal effort, and use MailReach within your software.

No more spam surprises. MailReach spam test API gives you the full picture, fast.

Comprehensive spam tests

Check for content triggers, sender reputation, and key factors that could land your email in the spam folder.

Automated at the frequency you need

Schedule spam tests to run automatically at intervals that fit your needs, ensuring continuous optimization without manual effort.

Actionable insights

Get immediate feedback with detailed insights and actionable recommendations. Learn exactly what to fix to improve your email deliverability.

Easy integration

Use an API quick to integrate with your platform, so you can start testing and optimizing fast.

Seamless monitoring

Continuously track your email performance and stay ahead of potential spam issues.

Fast-growing businesses use MailReach's to improve their email deliverability.

Reviews from G2

“We’ve tried various tools and MailReach has definitely been the best for a number of reasons. They’ve really put so much thought into how spam filters work and are continuously adding features that none of the competitors are even thinking about to improve the product. I am seriously impressed and glad to be a client of theirs!”

Daniel Greaves
CEO @ FueltoFly

“That’s simple, MailReach has helped us multiply our cold emails open rates x2. It has became our life insurance. Their deliverability guide is a gold mine too.”

Bastien Paul
Growth @ BigBlue

“We’ve tested many solutions and MailReach is definitely the most efficient email deliverability tool. MailReach helps us raise and maintain the deliverability of 20 email accounts. A great deliverability booster.”

Jean-Yves Delmotte
Co-Founder @ PaletteHQ

“As a cold email expert, I always recommend using MailReach to maximize the reputation of an email address / domain. MailReach combines complex algorithms and email best practices to offer a very efficient deliverability solution.”

Anas El-Mhamdi
Growth Engineer @ Gorgias

“MailReach is the most effective and user friendly cold email deliverability tool. Within a few weeks, we’ve seen great improvements on our outreach campaigns.”

Marion Gurtekin
Head of Sales @ Shine

“We’ve tested many solutions and MailReach is definitely the most efficient email deliverability tool. MailReach helps us raise and maintain the deliverability of 20 email accounts. A great deliverability booster.”

Jean-Yves Delmotte
Co-Founder @ PaletteHQ

“As a cold email expert, I always recommend using MailReach to maximize the reputation of an email address / domain. MailReach combines complex algorithms and email best practices to offer a very efficient deliverability solution.”

Anas El-Mhamdi
Growth Engineer @ Gorgias

“MailReach is the most effective and user friendly cold email deliverability tool. Within a few weeks, we’ve seen great improvements on our outreach campaigns.”

Marion Gurtekin
Head of Sales @ Shine

“That’s simple, MailReach has helped us multiply our cold emails open rates x2. It has became our life insurance. Their deliverability guide is a gold mine too.”

Bastien Paul
Growth @ BigBlue

“We’ve tried various tools and MailReach has definitely been the best for a number of reasons. They’ve really put so much thought into how spam filters work and are continuously adding features that none of the competitors are even thinking about to improve the product. I am seriously impressed and glad to be a client of theirs!”

Daniel Greaves
CEO @ FueltoFly

“MailReach is the most effective and user friendly cold email deliverability tool. Within a few weeks, we’ve seen great improvements on our outreach campaigns.”

Marion Gurtekin
Head of Sales @ Shine

“We’ve tried various tools and MailReach has definitely been the best for a number of reasons. They’ve really put so much thought into how spam filters work and are continuously adding features that none of the competitors are even thinking about to improve the product. I am seriously impressed and glad to be a client of theirs!”

Daniel Greaves
CEO @ FueltoFly

“As a cold email expert, I always recommend using MailReach to maximize the reputation of an email address / domain. MailReach combines complex algorithms and email best practices to offer a very efficient deliverability solution.”

Anas El-Mhamdi
Growth Engineer @ Gorgias

“We’ve tested many solutions and MailReach is definitely the most efficient email deliverability tool. MailReach helps us raise and maintain the deliverability of 20 email accounts. A great deliverability booster.”

Jean-Yves Delmotte
Co-Founder @ PaletteHQ

“That’s simple, MailReach has helped us multiply our cold emails open rates x2. It has became our life insurance. Their deliverability guide is a gold mine too.”

Bastien Paul
Growth @ BigBlue

“We’ve tried various tools and MailReach has definitely been the best for a number of reasons. They’ve really put so much thought into how spam filters work and are continuously adding features that none of the competitors are even thinking about to improve the product. I am seriously impressed and glad to be a client of theirs!”

Daniel Greaves
CEO @ FueltoFly

“That’s simple, MailReach has helped us multiply our cold emails open rates x2. It has became our life insurance. Their deliverability guide is a gold mine too.”

Bastien Paul
Growth @ BigBlue

“We’ve tested many solutions and MailReach is definitely the most efficient email deliverability tool. MailReach helps us raise and maintain the deliverability of 20 email accounts. A great deliverability booster.”

Jean-Yves Delmotte
Co-Founder @ PaletteHQ

“As a cold email expert, I always recommend using MailReach to maximize the reputation of an email address / domain. MailReach combines complex algorithms and email best practices to offer a very efficient deliverability solution.”

Anas El-Mhamdi
Growth Engineer @ Gorgias

“MailReach is the most effective and user friendly cold email deliverability tool. Within a few weeks, we’ve seen great improvements on our outreach campaigns.”

Marion Gurtekin
Head of Sales @ Shine

Flexible pricing for every campaign.

Check out our pricing calculator to see which plan fits your email testing needs.

Pay for the volume you need, and scale as you grow. Whether you're sending a few emails or managing large campaigns, we have a plan that works.

Spam Tester
(Spam Test Credits)
Monthly
Pay as you go
Select the number of spam test credits
200
Total: 
$210
 / month
20
100
150
200
300
500
1000
1500
2000
2000+
You saved 20%
$
---
/ month
(no tax included)
Your estimated total bill
Contact Us
Contact Us

We’ll offer you a custom pricing

Your Selected plan includes:
Automatic spam tests with alerts (Slack and /web-hooks)
SPF, DKIM, DMARC Checker
Inbox placement view by provider
Email blacklist checker
Test History
Links checker
Seed list rotation
Spam words checker
Reverse DNS checker
Spam Tester
(Spam Test Credits)
Monthly
Pay as you go
Select the number of spam test credits
200
Total: 
$210
20
100
150
200
300
500
1000
1500
2000
2000+
You saved 20%
$
1323
/ month
(no tax included)
Your estimated total bill
Contact Us
Contact Us

We’ll offer you a custom pricing

Your Selected plan includes:
Automatic spam tests with alerts (Slack and /web-hooks)
SPF, DKIM, DMARC Checker
Inbox placement view by provider
Email blacklist checker
Test History
Links checker
Seed list rotation
Spam words checker
Reverse DNS checker

Email deliverability questions? Ask the experts (that’s us).

How long should I use MailReach’s email warmer?
MailReach should be used before your campaigns, during your campaigns and between your campaigns to build and maintain a perfect sender reputation.
The initial warmup phase should last 14 days minimum. No campaigns should be sent during this phase. Once it’s done, it’s crucial to keep email warming as long as you send campaigns and between them.
Having a constant high engagement rate is what maintains your sender reputation in the long run.
Does MailReach work with all Email Service Providers?
MailReach works with any email service provider that supports SMTP.
Here are the most common providers: Gmail (Google Workspace), Outlook (Office 365), Zoho, Brevo, Mailjet, Mailgun, SendGrid, Amazon SES, Sparkpost, Ionos, OVH.
Is MailReach safe?
MailReach is the safest option compared to our competitors. Here’s why:
  • The warming activity and content is meaningful, human and subtle, yet super effective. Google and Microsoft suggest smart replies on our warming emails.
  • Unlike our competitors, we don’t include the same word or code in all subject lines of our warming emails.
  • MailReach follows all email providers’ rules.
Does MailReach warm my domain and IP or only my email address?
MailReach warms the email account, associated domain and associated IP behind.
However, if you have multiple sending addresses under one domain and/or under one IP, every address should be warmed in order to generate enough engagement on the domain and/or IP level.
I’m already landing in spam, can MailReach help me?
If you’re landing in spam because of a damaged reputation, MailReach’s email warmer can help you restore your sender reputation. Restoration is possible in 90% of cases.
If you’re landing in spam because of your email content and/or sending setup, our email spam test (Spam Checker) can help you spot the spam-triggering elements.

Emails in the inbox, sales in your pocket. It’s that simple with MailReach Spam test API.

Don’t risk having your emails go straight to spam. With MailReach’s Spam Test API, you get absolute peace of mind, knowing your emails will avoid the filters and land where they’re supposed to.