Swaks

swaks (Swiss Army Knife for SMTP) is a powerful command-line tool for testing and debugging SMTP servers. It allows users to craft custom SMTP sessions with fine-grained control over headers, authentication, TLS, attachments, and more. swaks is commonly used by sysadmins and developers to diagnose mail delivery problems or test SMTP server configurations.

Features

Sends test emails via SMTP with full control over the session
Supports authentication (LOGIN, PLAIN, CRAM-MD5)
TLS/SSL encryption support
Header customization and MIME/attachment testing
SMTP pipelining and IPv6 support
Debug output for troubleshooting mail servers

Project Samples

Project Activity

See All Activity >

License

GNU General Public License version 3.0 (GPLv3)

Follow Swaks

Swaks Web Site

Other Useful Business Software

Fully Managed MySQL, PostgreSQL, and SQL Server

Automatic backups, patching, replication, and failover. Focus on your app, not your database.

Cloud SQL handles your database ops end to end, so you can focus on your app.

Start Free

Rate This Project

User Reviews

Be the first to post a review of Swaks!

Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

Perl

Related Categories

Perl Software Testing Tool

Registered

2025-07-25

Similar Business Software

Parasoft

"Parasoft delivers an AI‑powered software testing platform that helps organizations continuously release high‑quality software. Our solutions support embedded and enterprise teams by integrating code analysis, testing, virtualization, and coverage into the delivery pipeline to improve security,...

See Software
MuukTest

Are bugs slipping through your QA process and frustrating your customers? Catching issues early shouldn’t mean overwhelming your team with time-consuming tests. With MuukTest’s AI-driven platform, growing engineering teams reach 95% end-to-end test coverage in just 3 months, delivering quality...

See Software
Zunoy Sandbox

Zunoy Sandbox is a developer testing platform for testing email, SMS, webhooks, OTP, and TOTP/MFA flows without sending test data to real users or production systems. Developers can connect their existing SMTP clients, SMS APIs, or webhook endpoints to Sandbox and capture the resulting events in...

See Software
Checksum.ai

Checksum is a continuous quality platform that autonomously generates, runs, and maintains tests so engineering teams can ship AI-generated code without trading speed for reliability. Unlike copilots that wait for prompts, Checksum works as a background agent, detecting what needs testing,...

See Software
QA Wolf

QA Wolf is the fastest path to deterministic end-to-end test coverage for web and mobile apps. In one platform, teams can manage the entire testing lifecycle: Map out your workflows and coverage gaps, automate your tests in Playwright or Appium, and run your suite fully in parallel. - Build...

See Software
Boozang

Build. Test. Automate. Empower your whole team to build and maintain automated tests, not just developers. Meet your testing demands fast. Get full test coverage in days, not months. Our natural-language tests are extremely stable to code changes. When tests break our AI will repair it in...

See Software