Microsoft 365 & Exchange Online Cloud

Centralized Email Signatures for Microsoft 365

Control company-wide email branding from a single dashboard. 100% automated via Exchange Online, active across all mobile and desktop devices, always synchronized with Microsoft Entra ID.

Exchange
Online Loopback
Entra ID
Live Sync (Azure AD)
100% Mobile
iOS, Mac, Android, Win
Frankfurt
Zero Message Storage
Enterprise Security Whitepaper

Certified Enterprise Security & Uncompromising Compliance

100%
GDPR & Zero Message Storage
< 15ms
Ultra-low Latency Mail Processing
ISO 27001
Certified Frankfurt (DE) Datacenter
99.99%
Uptime & SLA Guarantee
TLS 1.3 Encryption
Microsoft 365 Cloud Partner
GDPR Art. 28 DPA
Location: Frankfurt am Main, Germany
Live Entra ID Demo

Dynamic Attributes from Microsoft Entra ID

Toggle between corporate roles to see how user profile data from Microsoft Entra ID populates responsive email signatures.

Banner Gradient:
Microsoft Outlook 365 Enterprise
Entra ID Live Sync
From:Max Mustermann<max.mustermann@averoia.com>
To:board@example-enterprise.com
Subject:Enterprise Rollout of Corporate Email Signatures

Hello Dr. Bergmann,

please find attached our confirmation regarding the Microsoft 365 integration with the Averoia signature platform.

Best regards,

MM
Max MustermannExecutive C-Level
Managing Director / CEO
Executive Board•+49 69 9876543-10•+49 170 1234567
Averoia 2.0 Live — Discover the New Release
Automated Microsoft 365 Signatures Without IT Overhead
Learn More
Averoia GmbH • Mainzer Landstraße 180, 60327 Frankfurt am Main • District Court Frankfurt HRB 118920 • Managing Director: Max Mustermann • VAT ID: DE 328 941 205
Technical Mailflow Architecture

How the Exchange Online Loopback Works

Inspect interactive mail packets traveling from employee devices through Microsoft 365 to the Averoia in-memory node and onward to the recipient.

Interactive Architecture Hierarchy

The Mailflow Architecture Tree

Explore the hierarchical mailflow tree: from multi-client origins to the core in-memory engine, sub-processing modules, and final Exchange Online delivery.

Tier 1: Email Origins (All Devices & Clients)
Outlook 365 Desktop
Desktop Client
Windows & macOS
Mobile Devices
Mobile Agnostic
iOS, iPhone & Android
Outlook on the Web
Zero Footprint
Webmail & Browser
Tier 2: Central Averoia Cloud Processing Hub (Frankfurt DE)

Averoia Cloud Gateway

Stateless In-Memory Processing Hub (Frankfurt, Germany)

TLS 1.3 In-Memory0 Bytes Disk StorageLatency: < 4ms
Tier 3: Parallel Intelligence & Enrichment Engines
User Attributes
Entra ID Sync
Microsoft Graph API Live-Sync
Runtime:< 2 ms
Marketing Scheduler
Campaign Engine
Marketing Banners & UTM Tracking
Runtime:< 2 ms
Compliant
Compliance & Legal Module
Corporate Legal Disclaimers
Runtime:< 1 ms
Zero Touch
Security & Encryption Guard
S/MIME & PGP Passthrough
Runtime:< 1 ms
Tier 4: Re-Injection
Exchange Online Transport
Microsoft 365 Inbound Connector (Port 25)
SPF, DKIM & DMARC signatures 100% preserved
Tier 5: Final Delivery & Recipient Inboxes
Clients & Partners
Full Signature
External Recipients Worldwide
Internal Team
Compact Signature
Colleagues within same tenant
Architecture Detail (Tier 2)•Latency: < 4 ms

Averoia Cloud Gateway

Stateless In-Memory Processing Hub (Frankfurt, Germany)

Verified Security Standard

High-security SMTP loopback engine in ISO 27001 certified German datacenters. Processed purely in volatile RAM.

Specification 1
TLS 1.3 transport encryption with Perfect Forward Secrecy
Specification 2
Strict Zero Message Storage guarantee (0 bytes written to disk)
Specification 3
Cryptographic X-Averoia headers prevent mail loops
Specification 4
High-availability cluster with automated failover (< 12ms latency)
Zero Message Storage Guarantee:No email bodies or attachments are ever written to persistent storage.
Verify architecture in demo tenant

Engineered for Enterprise Microsoft Environments

Purpose-built for IT systems administrators demanding zero maintenance, reliability, and security.

⚡

Server-Side Loopback Connector

No client add-ins required. Every email routed through Exchange Online is stamped with your standardized corporate signature.

📱

100% Mobile Device Coverage

Native support across Apple Mail (iPhone / iPad), Microsoft Outlook for iOS and Android, macOS, Windows, and Outlook on the Web.

👥

Real-Time Microsoft Entra ID Sync

Employee titles, departments, phone numbers, and addresses dynamically update via Microsoft Graph API without manual IT tickets.

🛡️

Zero Message Storage & GDPR

Emails are processed strictly in-memory in Frankfurt am Main, Germany. No company email content is ever written to disks.

🎯

Dynamic Marketing Banners

Schedule marketing, recruitment, and event banners with automated UTM campaign parameters for analytics tracking.

🏢

Multi-Tenant & Domain Rules

Deploy specific templates and legal disclaimers per branch, department, subsidiary domain, or internal vs. external recipients.

Fast Onboarding

Live in 4 Simple Steps

Zero desktop client installations, zero complex deployment workflows.

1

Microsoft 365 Authorization

Authenticate with your global M365 admin account. Averoia establishes a secure connection via Microsoft Graph API within seconds.

2

Exchange Online Loopback Connector

Our automated setup wizard establishes the server-side transport rule and loopback connector in Exchange Online without complex PowerShell scripting.

3

Assign Templates & Entra ID Sync

Select designs from our template library or import custom HTML. Averoia maps employee phone numbers, titles, and departments automatically.

4

Go-Live & Automated Delivery

Activate company-wide or roll out initially to a test security group. Outgoing emails now receive brand-compliant signatures automatically.

Technical Specifications & Performance Guarantees

Key benchmarks for IT security and infrastructure architects.

Processing Latency < 15 milliseconds (Volatile In-Memory)
Encryption Standard Enforced TLS 1.3 with Certificate Validation
Directory Sync Microsoft Graph API & Entra ID Webhook Sync
Datacenter Location Frankfurt am Main, Germany (ISO 27001)
Standard Compliance Full RFC 5322 & MIME Standards Support
Privacy Guarantee Guaranteed Zero Message Storage (ZMS)
Customer Stories

Loved by IT Leaders & Marketing Executives

Learn how organizations standardized their email communications with Averoia.

"With Averoia, signature management for our 450 employees across Outlook and iOS was completely automated in under 10 minutes. Zero manual intervention, zero IT support tickets."

ML
Markus Lindner
Head of IT & Infrastructure
Fintech Group Holding AG

"Our marketing campaigns now reach 100% of our outbound business emails. Click-through rates on our webinar and event banners jumped by more than 35% thanks to Averoia."

SW
Sarah Weber
Chief Marketing Officer
NovaLogics Cloud Solutions

"As an MSP managing over 60 client organizations on Microsoft 365, Averoia's multi-tenant console saves our technical team multiple hours of administrative overhead every week."

CB
Christian Bauer
Managing Director & IT Consultant
Bauer IT Solutions GmbH

Frequently Asked Questions

Technical details on Microsoft 365 tenant deployment.

Q: How does Averoia connect to Microsoft 365?

Setup takes under 5 minutes using Microsoft Graph API authorization and a dedicated Exchange Online mailflow transport rule. No desktop or mobile agents are needed.

Q: Do employees need to configure anything on their devices?

No. Because processing is handled in the cloud, signatures are appended automatically when emails pass through Microsoft 365.

Q: Are Entra ID (Azure AD) updates reflected immediately?

Yes. Averoia synchronizes changes dynamically via Microsoft Graph webhooks, ensuring promotions and contact updates are live instantly.

Q: Does Averoia support hybrid Exchange architectures?

Yes. Averoia fully supports hybrid Microsoft 365 setups where outbound messaging routes through Exchange Online.

Connect your Microsoft 365 Tenant in minutes

Try Averoia for 14 days free with unrestricted access to all enterprise capabilities.