---
title: "Mail Server Tester - Free tester | FirstSales"
description: "The Mail Server Tester performs comprehensive health checks on mail servers. Test connectivity, DNS configuration, authentication, and security in one"
canonical: "https://firstsales.io/tools/mail-server-tester/"
---

100% Free • No SignupEmail Deliverability & Authenticationtester

# Mail Server Tester

Run a comprehensive health check on any mail server including connectivity, DNS, and auth. Works instantly without signup.

Instant Results

No Signup

[Home](/)/[Tools](/tools/)/Mail Server Tester

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Mail Server Tester

Test SMTP Server

Check SMTP server availability, ports, and configuration

[Stop doing this by hand. FirstSales runs your email deliverability & authentication on autopilot, 24/7.Start your $1 trial](https://app.firstsales.io)

## Key Features

Comprehensive testing

Multi-protocol support

Security checks

Performance metrics

Detailed reports

## Use Cases

1

Server health audit

2

Troubleshooting

3

Setup verification

4

Performance testing

Tool Info

Typetester

Free

Yes

Signup

Not Required

Related Tools

[SPF Record CheckerValidate your domain's SPF record and identify misconfigurations that block email delivery](/tools/spf-record-checker/)[DKIM Record CheckerVerify your DKIM DNS record is correctly published and properly signing outgoing emails](/tools/dkim-record-checker/)[DMARC Record CheckerAnalyze your DMARC policy to ensure email authentication alignment and reporting is active](/tools/dmarc-record-checker/)[Email Authentication AnalyzerRun a full SPF + DKIM + DMARC audit on any domain and get a pass/fail scorecard](/tools/email-authentication-analyzer/)[Inbox Placement TesterTest whether your emails land in inbox, spam, or promotions tab across Gmail, Outlook, and Yahoo](/tools/inbox-placement-tester/)[SMTP Server TesterTest SMTP connectivity by sending a test message and verifying handshake, TLS, and authentication](/tools/smtp-server-tester/)

Start your $1 trial

Automated cold email sequences

Smart deliverability tools

Built-in analytics

[Start your $1 trial ](https://app.firstsales.io/)

## About Mail Server Tester

The Mail Server Tester performs comprehensive health checks on mail servers. Test connectivity, DNS configuration, authentication, and security in one tool.

## Automate Your Email Deliverability & Authentication

This free tool is great for quick checks. FirstSales automates your entire email deliverability & authentication workflow with AI-powered personalization and 87% inbox placement.

[Start your $1 trial](https://app.firstsales.io)

Setup in 8 minutes • Cancel anytime

## FAQs

Your questions answered

Can't find what you're looking for? Contact our [customer support team](mailto:support@firstsales.io)

### General

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### Deliverability

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Can't find what you're looking for? Contact our [customer support team](mailto:support@firstsales.io)