About

Built in Antwerp

Badex Signature is a product of Badex — a Belgian software company focused on email signature management for Microsoft 365, cPanel, Plesk, Roundcube and any SMTP infrastructure.

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Our Mission
Make professional email signature management simple, affordable, and accessible for every organization — whether they use Microsoft 365, cPanel, Plesk, or any other email platform.
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Based in Belgium
Headquartered in Antwerp, serving companies across Belgium, the Netherlands, Luxembourg, and the rest of Europe.
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Privacy First
GDPR compliant by design. We never sell your data, never show ads, and give you full control over your organization's information.
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Always Improving
We ship updates regularly based on customer feedback. If you have an idea, we want to hear it — hello@badex.app.

Why we built Badex Signature

Managing email signatures across an entire organization is surprisingly painful. Most IT teams spend hours chasing employees to update their signatures, only to end up with inconsistent formats, missing information, and branding violations.

Existing solutions like CodeTwo and Exclaimer were either too expensive (charging per mailbox), too complex, or too limited — only working with Microsoft 365. Millions of businesses run their email on cPanel, Plesk, Roundcube, or Directadmin and had zero professional options.

We built Badex Signature to solve this — a flat-rate, server-side solution that works with any email infrastructure, auto-syncs with Microsoft 365, and deploys in under 5 minutes.

The only platform for both M365 and generic SMTP

Badex Signature is the only email signature platform that works natively with both Microsoft 365 (via Graph API and Exchange Online connectors) and any generic SMTP server — cPanel, Plesk, Roundcube, Directadmin, Thunderbird, Apple Mail, and more.

For M365 users, we integrate via the Graph API and route outbound mail through our SMTP service which injects the correct DKIM-signed signature based on your policies. For generic SMTP users, you simply configure our server as your outgoing SMTP relay — no plugins, no add-ins, no complexity.

Contact us

We're a small team and we read every email. Reach us at hello@badex.app or use the contact form.