Debug Mail

Debug Mail

DebugMail.io
HELO

HELO

Beyond Code
+
+

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About

How Debug Mail work The service provides command-line access to the virtual SMTP-server. The sender and receiver addresses can be anything, since no real mailings are sent. The technology used by application developers does not matter, the service will work with PHP, Python, Ruby, Node.js, .NET and many other programming languages and frameworks. Sharing options Sharing is the main feature of Debug Mail. To see what the service and other mailings will look like, just connect the right users to the project in the service, and they will see the same thing as the developer who is testing the mailing. What you can do in Debug Mail - Send emails to non-existent test addresses instead of real ones. - Set up email distribution lists with colleagues using team access. - Work together with other developers on the service.

About

HELO is a desktop application designed to simplify email testing and debugging for web developers by capturing and analyzing outgoing emails generated by applications during development. Instead of sending emails to real recipients, HELO exposes a local SMTP server that intercepts outgoing messages and displays them inside the application, allowing developers to inspect and verify them before deployment. This approach helps prevent common problems such as broken links, missing images, formatting errors, and other issues that often appear in production emails. It provides detailed debug views that show the email in multiple formats, including HTML rendering, plain text, raw source code, and full message headers, giving developers a complete understanding of how the message is structured. Automated validation tools check links within the email to confirm they return valid HTTP responses, reducing the risk of sending emails with invalid or broken URLs.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

For developers, QA engineers, and managers looking for a solution for testing and debugging emails.

Audience

Web developers building applications that send transactional or automated emails and need a local tool to test, debug, and validate those emails before deployment

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$2 per user per month
Free plan - $0
Silver plan - 2 weeks trial period, after $2 per user per month
Gold plan - $5 per user per month

We provide a free Silver plan for OSS projects.
Free Version
Free Trial

Pricing

$49 per month
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 4.5 / 5
support 4.5 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • Unlimited emails even on the free plan, the ability to form teams, flexibly give project access to team members. Fast integration. Inexpensive tariff plans.
  • I like the free plan. But I also tried the trial version on Silver. For a quick test, DM always helps out.

Cons

  • The only drawback that is hindering me right now is the lack of a mobile version of the web app.
  • I'm fine with it. What could be the cons of such a simple service?

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

DebugMail.io
Founded: 2021
United States
debugmail.io

Company Information

Beyond Code
Founded: 2017
Germany
usehelo.com

Alternatives

Alternatives

Mailtrap

Mailtrap

Railsware
PilotMail

PilotMail

Netling Digital
Debug Mail

Debug Mail

DebugMail.io
Minty Email Tester

Minty Email Tester

MintyEmailTester.com
Mailsac

Mailsac

Forking Software

Categories

Categories

Email Testing Features

A/B Testing
Accessibility Testing
Deliverability Rates
DMARC Analytics
HTML Validation
Improvement Recommendations
IP Blacklist Checking
Pre-Send Email Testing
Preview Across Browsers & Devices
Reporting / Analytics
Sender Reputation Scoring
Spam Testing

Integrations

HTML

Integrations

HTML
Claim Debug Mail and update features and information
Claim Debug Mail and update features and information
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Claim HELO and update features and information