Preview. Version. Approve.
Ship better emails.
Dump Mailer is a testing workspace for digital marketers and teams. Upload your HTML emailers, preview how they look in light/dark mode, manage versions, and share tests at team or recipient level before sending campaigns or presenting to clients.
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<h1 style="margin:0;color:#111827">Campaign Ready ✅</h1>
<p style="color:#4b5563">Previewed in light & dark mode. Approved by the team.</p>
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Share for Testing
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</table>Everything you need to test and manage HTML emailers
Built for digital marketing workflows: preview rendering, manage brands and assets, organize templates by teams, and keep a clean version history.
See exactly how your email looks across themes before it reaches clients or campaigns.
Create teams, add members, and run testing at a team level then send to recipients for review.
Create brands and color sets, then map templates under the right brand and team for consistent output.
A workflow that matches how email teams actually work
Organize templates, share tests faster, and avoid “it looked fine on my side”.
Create a brand
Set brand colors once, then reuse them across templates and teams.
Build templates
Create multiple HTML templates and assign them under the right brand and team.
Upload assets
Use the image repository to store files and link them directly inside templates.
Test & version
Preview light/dark mode, share with teams/recipients, and keep every template version tracked.
Designed for approvals, handoffs, and client-ready confidence
One place for templates, assets, teams, and the exact preview your stakeholders need.
“Now we test once and share it with the whole team. No more screenshot chaos.”
Marketing lead • Campaign approvals★★★★★
“Brand colors + templates stay consistent across teams. Clients see the same output every time.”
Agency • Multi-brand delivery★★★★★
“Version control is a lifesaver. We can always roll back to a previous version.”
Developer • Template maintenance★★★★★
FAQ
Find answers by category and learn how Dump Mailer helps your team test emails with confidence.
General
What is Dump Mailer?
Dump Mailer is a tool developed by Sitesoch LLP to safely test and preview HTML-based emails before they are sent to real users. It gives teams a controlled space to review email layouts, styling, structure, and responsiveness so issues can be caught early in the development and QA process.
Who can use Dump Mailer?
Dump Mailer is designed for developers, QA testers, designers, product teams, and businesses that regularly send HTML emails. Whether you are building transactional emails, onboarding flows, notifications, or promotional campaigns, Dump Mailer helps make sure everything looks correct before launch.
Why should I use Dump Mailer?
HTML emails often render differently across email clients and screen sizes. Dump Mailer helps you catch layout breaks, styling inconsistencies, spacing issues, and responsive design problems before your emails reach actual customers, helping your team maintain a more polished and reliable email experience.
Usage
How do I test an email?
Simply configure Dump Mailer with your team and recipients, then send your HTML email through the platform. Once the email is received, your team can review it in a safe testing environment to check layout, styling, responsiveness, and overall presentation before it is sent to actual users.
Can I test responsive email designs?
Yes. Dump Mailer is useful for checking how your email layout behaves across different screen sizes. This helps your team confirm that content blocks, spacing, buttons, and text remain readable and visually balanced on both desktop and mobile devices.
Can I test attachments?
No, Dump Mailer currently does not support testing attachments. The platform is focused on validating HTML email content, layout structure, visual styling, and responsiveness.
Pricing
Does Dump Mailer offer a free plan?
Yes, Dump Mailer offers both free and paid plans. The free plan is suitable for basic testing needs and includes limited storage and usage, making it a good option for individuals or teams getting started.
What do paid plans include?
Paid plans unlock additional features designed for growing teams and businesses. These may include more team collaboration options, unlimited recipients, higher usage capacity, and priority support for faster assistance when needed.
Do subscriptions auto-renew?
Yes, paid subscriptions automatically renew unless they are cancelled before the renewal date. You can manage, upgrade, or cancel your subscription anytime through your account settings.
Privacy & Security
Are my test emails private?
Yes. Emails sent through Dump Mailer are intended for internal testing and are only accessible to authorized members of your team. This helps protect test content while allowing collaboration within your workspace.
Does Dump Mailer send emails to real customers?
No. Dump Mailer is meant for safe internal email testing. It helps teams review emails before they are delivered in production, reducing the risk of accidental sends to real customers during development or QA.
How long are emails stored?
Email retention depends on your selected plan. Free plans may include limited storage, while paid plans can offer extended history and more flexibility for teams that need ongoing access to past test emails.
Support
How can I contact support?
You can contact the Dump Mailer support team anytime at contact@sitesoch.com or through the in-app help center. Support is available to assist with setup questions, troubleshooting, and general product guidance.
Do you provide documentation?
Yes, we provide extensive documentation to help teams integrate and use Dump Mailer effectively. This includes setup guidance, usage instructions, and helpful references to make onboarding and day-to-day usage easier.
Do paid plans include priority support?
Yes. Paid plans include priority support, which gives your team faster assistance for important questions or issues. This is especially useful for businesses that depend on smooth and timely email testing workflows.
Get early access to Dump Mailer
Tell us your workflow we’ll invite teams that need email testing, approvals, and brand control the most.