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

Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.

Try 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 helps organizations continuously deliver high-quality software with its AI-powered software testing platform and automated test solutions. Supporting embedded and enterprise markets, Parasoft’s proven technologies reduce the time, effort, and cost of delivering secure, reliable, and...

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
QA Wolf

Whether you're shipping web or mobile apps, QA Wolf has you covered. We build automated end-to-end tests for 80% of your user flows in weeks, maintain them 24 hours a day, and provide unlimited parallel test runs on our infrastructure. Did we mention that we guarantee zero flakes? We do that...

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
Testim

Testim is the fastest path to resilient end-to-end tests—codeless, coded or both. Testim lets you create amazingly stable codeless tests that leverage our AI, but also the flexibility to export tests as code. You can leverage Testim’s modern JavaScript API and your IDE to debug, customize or...

See Software
devZing

Bug Tracking, Test Case Management and Version Control devZing provides a hosted, managed environment with the tools you need for your project team to get things done. We make sure the servers are running fast, are backed up and have the most current versions. You create great...

See Software