Badex
Badex
Signature
Email signatures, centralized.
Belgium-based SaaS for Microsoft 365 & SMTP signature management

Email signature
management for
modern companies

Badex Signature is a SaaS platform that helps companies centrally manage branded email signatures, banners, policies and analytics across Microsoft 365 and SMTP environments — built for SMEs, agencies and growing teams worldwide.

Start Free 14-Day Trial → 🏢 About Badex
Microsoft 365
cPanel / WHM
Plesk
Roundcube
Directadmin
Thunderbird
Apple Mail
+ Any SMTP
✓ No credit card required
✓ SaaS business model
✓ Microsoft 365 & SMTP
✓ Cancel anytime
🚀
A scalable SaaS platform for email signature management Badex Signature combines Microsoft 365 integration, SMTP relay support, signature policies, banner campaigns and analytics in one platform, with transparent domain-based pricing instead of complex per-user costs.
⚡
Works with cPanel & Plesk
✓
DKIM · SPF · DMARC Pass
Works seamlessly with every major email platform
Microsoft Ecosystem
Microsoft 365
Exchange Online
Azure AD / Entra ID
Outlook
Teams
+ Generic SMTP
Hosting Control Panels
🟠 cPanel / WHM
🔵 Plesk
🟢 DirectAdmin
⚙️ Exim / Postfix
Email Clients & Webmail
🔷 Roundcube
🦊 Thunderbird
🍎 Apple Mail
🐦 Zoho Mail
📧 Any SMTP Client
Built as a modern cloud-native SaaS platform
Microsoft 365
Azure
Exchange Online
Graph API
Laravel
PHP
PHP 8.3
Python
MySQL
RE
Redis
Postfix / SMTP
Company

A digital-native SaaS business built in Belgium

Badex Signature is developed by Badex, a Belgium-based software company focused on practical cloud products for business communication, Microsoft 365 automation and secure email infrastructure.

🌍
Globally available
A web-based SaaS platform accessible from anywhere, designed for companies, agencies and IT providers.
💼
Clear business model
Subscription-based plans with transparent pricing for Microsoft 365, SMTP and reseller use cases.
🔐
Security focused
GDPR-oriented, EU-hosted, with DKIM, SPF, DMARC, audit logs and controlled access for administrators.
⚙️
Digital product
Built with Laravel, Microsoft Graph, SMTP relay services, analytics and automated onboarding flows.
Badex Signature at a glance
Product
Email signature management SaaS
Target customers
SMEs, agencies, IT providers and Microsoft 365 tenants
Markets
Belgium, Europe and global online customers
Revenue model
Monthly SaaS subscriptions and reseller plans
Integrations
Microsoft 365, Exchange Online, SMTP, DKIM, DNS
About Badex Security Pricing
Early users, pilots and business network
+ more companies joining every week
Microsoft Partner
Microsoft Partner
Azure & Microsoft 365
🛡️
Email authentication ready
SPF · DKIM · DMARC
🇪🇺
GDPR Compliant
Hosted in Belgium · EU
⚡
Cloud-ready architecture
EU-hosted infrastructure
CSA STAR Level 1
CSA STAR Listed
★★★★★

"Badex Signature saved us hours of manual work. Every user has a consistent, branded signature without any client-side setup."

A
IT Manager
ARM Logistic Group
★★★★★

"Setup took 5 minutes. The Exchange connector script worked perfectly first try. DKIM and DMARC pass on every email."

D
System Administrator
De Cock-Neefs
★★★★★

"Finally a signature tool that works with our cPanel hosting AND our Microsoft 365 accounts. One platform for everything."

R
Operations Manager
Real to Desk
Features

Everything in one platform

Built for IT administrators, agencies, and hosting providers who need centralized signature control across any email infrastructure.

🏢
Microsoft 365 Sync
Connects via Graph API. All user data — names, titles, departments, phones — syncs automatically. No manual updates ever.
📧
Generic SMTP Support NEW
Works with cPanel, Plesk, Roundcube, Directadmin, Thunderbird and any SMTP client. No M365 required. Port 587 + STARTTLS.
🔐
DKIM · SPF · DMARC
Every email is cryptographically signed regardless of source. Full authentication compliance out of the box for all platforms.
✦
Visual Signature Editor
Drag-and-drop editor with real-time preview. Build professional signatures without touching a line of HTML. Works for M365 and SMTP.
🎯
Smart Policy Engine
Apply signatures by domain, department, title, email, or user. Set priorities and schedule seasonal campaigns across all platforms.
🏢
Multi-Tenant & Reseller
Manage multiple organizations from one dashboard. Perfect for agencies and hosting providers. Isolated data, custom branding per tenant.
Generic SMTP Support

Works beyond Microsoft 365

The only signature platform that injects professional DKIM-signed signatures into emails sent from any SMTP server — not just M365.

🟠
cPanel / WHM
Configure Badex as your outbound SMTP relay in cPanel. All emails automatically get professional signatures injected before delivery.
Hosting Panel
🔵
Plesk
Works with Plesk Obsidian and Onyx. Set up the SMTP relay in Plesk mail settings and signatures are applied to all outbound mail.
Hosting Panel
🔷
Roundcube
Configure SMTP credentials in Roundcube webmail settings. Users send through Badex and get their signature automatically appended.
Webmail
🟢
DirectAdmin
Full compatibility with DirectAdmin hosting panels. Configure the outbound SMTP relay and manage all signatures centrally.
Hosting Panel
🦊
Thunderbird
Set smtp.signature.badex.app as outgoing server in Thunderbird. Works on Windows, Mac and Linux. No plugins needed.
Email Client
📘
Outlook (non-365)
Works with standalone Outlook (IMAP/SMTP accounts). Add Badex as the outgoing SMTP server for any non-M365 account.
Email Client
🐦
Zoho Mail
Configure Zoho Mail to relay outbound messages through Badex SMTP. Full signature injection and DKIM signing for all users.
Email Service
⚙️
Any SMTP Client
If it supports SMTP port 587 + STARTTLS, it works with Badex. Apple Mail, eM Client, Postfix relay, custom apps — all supported.
Universal
How SMTP injection works
Server-side injection — no plugins, no client-side configuration, no per-user setup.
1
Create SMTP Account
Create a credential in your Badex dashboard for each user or domain.
2
Configure Email Client
Set smtp.signature.badex.app:587 as outgoing server with STARTTLS.
3
Design Signature
Build your signature template with our drag-and-drop editor.
4
Send — Done
Every outbound email gets DKIM-signed with your signature. Automatic, always on brand.
SMTP Connection Settings
Server:smtp.signature.badex.app
Port:587
Security:STARTTLS
Auth:PLAIN / LOGIN
Username:your-email@yourdomain.com
Password:your-badex-smtp-password
✓ Signature injected automatically on every outbound email
✓ DKIM signed with your domain key
✓ SPF · DMARC compliant delivery
How it works

Up and running in minutes

No plugins, no Outlook add-ins, no per-user installs. Works at the server level for both M365 and generic SMTP.

🏢 Microsoft 365
📧 Generic SMTP
01
Connect Microsoft 365
Sign in with your Microsoft 365 admin account via OAuth. We instantly import all users, groups, and organizational data from Azure AD.
02
Configure Your Domain
Add your email domain. We generate DKIM keys and show you the exact DNS records to add — copy-paste ready.
03
Design Your Signature
Use our drag-and-drop editor. Variables like {{full_name}} and {{title}} are filled automatically per user from Azure AD.
04
Run the PowerShell Script
Copy our auto-generated PowerShell script and run it in Exchange Online. Creates the connector in 60 seconds.
Exchange Online Connector Script
# Generated by Badex Signature
# Run in Exchange Online PowerShell

Connect-ExchangeOnline

New-OutboundConnector \
  -Name "Badex Signature" \
  -SmartHosts "smtp.signature.badex.app" \
  -ConnectorType Partner \
  -Enabled $true

✓ Connector created successfully
✓ All outbound mail routed through Badex
✓ DKIM signing active for all users
✅
Zero client-side installation. Works with any email client — Outlook, Mac Mail, mobile apps.
01
Add Your Domain
Add your company domain in the dashboard. We generate DKIM keys and give you exact DNS records for SPF, DKIM and DMARC.
02
Create SMTP Accounts
Create credentials for each user or use CSV bulk import. Works for individuals, whole teams, or reseller clients.
03
Design Your Signature
Use our drag-and-drop editor to create professional signatures. Set policies per domain, user, or group.
04
Configure Your Email Client
Set smtp.signature.badex.app:587 with STARTTLS in cPanel, Plesk, Roundcube, or any SMTP client. Done.
cPanel SMTP Relay Configuration
# cPanel → Email → SMTP Relay

Outgoing Server: smtp.signature.badex.app
Port: 587
Security: STARTTLS
Auth: user@yourdomain.com

# Plesk → Mail → Outgoing Mail

Relay host: smtp.signature.badex.app:587
Username: user@yourdomain.com

✓ Signature injected on every outbound email
✓ DKIM signed with your domain key
✓ Works with Roundcube, Thunderbird, Apple Mail
✅
No Microsoft 365 required. Works with any hosting provider — cPanel, Plesk, Directadmin.
< 1s
Signature injection time
100%
DKIM delivery success
8+
Supported platforms
0
Plugins to install
Pricing

Transparent flat pricing

No per-user fees. Fixed monthly price per tier. Choose the plan that fits your email infrastructure.

🏢 Microsoft 365
📧 Generic SMTP
Starter
€21/month
Perfect for small teams and single-domain companies.
  • 1 email domain
  • Up to 25 users
  • 3 signature templates
  • DKIM + SPF + DMARC
  • Microsoft 365 sync
  • Email support
Start Free Trial
Pro
€54/month
Growing teams that need more domains and users.
  • 3 email domains
  • Up to 100 users
  • 5 signature templates
  • DKIM + SPF + DMARC
  • Banner campaigns
  • Analytics & tracking
  • Priority support
Start Free Trial
Most Popular
Business
€108/month
The complete solution for growing organizations.
  • 10 email domains
  • Up to 500 users
  • 15 signature templates
  • DKIM + SPF + DMARC
  • Banner campaigns
  • Analytics & tracking
  • Priority support
  • Add-ons available
Start Free Trial
Enterprise
Custom
For large organizations with specific requirements.
  • Unlimited domains
  • Unlimited users
  • Unlimited templates
  • White label option
  • Custom SLA
  • Dedicated account manager
Contact Sales
CodeTwo €1.30/user/mo · 100 users = €130/mo  ·  Exclaimer €1.50/user/mo · 100 users = €150/mo  ·  Badex Business = €108/mo flat for up to 500 users.
Solo
€7/month
For freelancers and small businesses on any hosting.
  • 1 email domain
  • 10 SMTP accounts
  • 3 signature templates
  • DKIM + SPF + DMARC
  • cPanel / Plesk / Roundcube
  • Email support
Start Free Trial
Studio
€21/month
Small agencies and multi-domain businesses.
  • 3 email domains
  • 50 SMTP accounts
  • 5 signature templates
  • DKIM + SPF + DMARC
  • All email clients supported
  • Banner campaigns
  • Priority support
Start Free Trial
Most Popular
Agency
€39/month
Agencies managing signatures for multiple clients.
  • 10 email domains
  • 250 SMTP accounts
  • 15 signature templates
  • DKIM + SPF + DMARC
  • Multi-tenant dashboard
  • Banner campaigns
  • Analytics & tracking
  • Priority support
Start Free Trial
Reseller
€79/month
Hosting providers and large-scale resellers.
  • 30 email domains
  • Unlimited SMTP accounts
  • Unlimited templates
  • DKIM + SPF + DMARC
  • White label option
  • Bulk CSV import
  • Dedicated support
  • Custom branding
Start Free Trial
No competitor offers this. Generic SMTP signature injection with DKIM signing — works with cPanel, Plesk, Roundcube, Directadmin and any SMTP client.

How we compare

The only platform that covers both Microsoft 365 and generic SMTP

Feature Badex Signature CodeTwo Exclaimer
Microsoft 365 support✓ Yes✓ Yes✓ Yes
cPanel / Plesk support✓ Yes✗ No✗ No
Roundcube / Thunderbird✓ Yes✗ No✗ No
Any SMTP client✓ Yes✗ No✗ No
DKIM + SPF + DMARC✓ All platforms✓ M365 only✓ M365 only
Flat monthly pricing✓ Yes✗ Per user✗ Per user
Starting price€7/mo~€1.30/user/mo~€1.50/user/mo
100 users cost€21/mo flat~€130/mo~€150/mo

Ready to get started?

Join companies managing professional email signatures with Badex — whether you're on Microsoft 365, cPanel, Plesk, or any SMTP server. 14-day free trial, no credit card required.

Start Your Free Trial →