# MailTested

> MailTested is a free email deliverability and spam-testing service. It analyzes message content, sending infrastructure, SPF, DKIM, DMARC, blacklist status, and email headers to help explain inbox-placement problems.

MailTested is operated by iServerSupport. The public tools can be used without creating an account. Individual test-report URLs are transient and should not be treated as permanent reference pages.

## Core tools

- [Email Deliverability and Spam Test](https://mailtested.com/): Send a message to a temporary test address and receive a detailed deliverability report.
- [Email Header Analyzer](https://mailtested.com/tools/email-header-analyzer): Parse email headers and inspect authentication, routing, and delivery information.
- [IP Blacklist Checker](https://mailtested.com/tools/ip-blacklist-checker): Check whether a mail-server IP appears on DNS-based blocklists.
- [SPF Checker](https://mailtested.com/tools/spf-checker): Inspect and validate a domain's SPF record.
- [SPF Generator](https://mailtested.com/tools/spf-generator): Build an SPF record for a domain.
- [DKIM Checker](https://mailtested.com/tools/dkim-checker): Retrieve and validate a DKIM public-key record.
- [DKIM Generator](https://mailtested.com/tools/dkim-generator): Generate DKIM keys and the corresponding DNS record.
- [DMARC Checker](https://mailtested.com/tools/dmarc-checker): Inspect and validate a domain's DMARC policy.

## Guides

- [Email Deliverability Guides](https://mailtested.com/guides): Index of practical email-delivery documentation.
- [How to Improve Email Deliverability](https://mailtested.com/blog/improve-email-deliverability): Steps for improving authentication, reputation, and inbox placement.
- [Why Emails Go to Spam](https://mailtested.com/blog/why-emails-go-to-spam): Common technical and content-related causes of spam placement.
- [How to Read Email Headers](https://mailtested.com/blog/how-to-read-email-headers): Explanation of routing and authentication fields in message headers.
- [How to Fix SPF, DKIM, and DMARC](https://mailtested.com/blog/how-to-fix-spf-dkim-dmarc): Troubleshooting guide for the main email-authentication standards.
- [How to Fix a Blacklisted IP](https://mailtested.com/blog/fix-blacklisted-ip): Diagnosis and remediation steps for mail-server blacklist listings.

## About and policies

- [Methodology](https://mailtested.com/methodology): How MailTested evaluates email deliverability.
- [About MailTested](https://mailtested.com/about): Service background and purpose.
- [Privacy](https://mailtested.com/privacy): Privacy and data-handling information.
- [Security](https://mailtested.com/security): Security information.
- [Contact](https://mailtested.com/contact): How to contact the MailTested team.