• HOME
  • CATEGORIES

    • CATEGORIES

    • Application Development

      • Observability Platforms
      • Integrated Development Environment (IDE) Software
      • Enterprise Agile Planning Tools
      • Integration Platform as a Service
      • AI-Augmented Software Testing Tools
      • View All
    • Artificial Intelligence

      • AI Code Assistants (Transitioning to AI Coding Agents)
      • Generative AI Knowledge Management Apps/General Productivity
      • AI Application Development Platforms
      • Conversational AI Platforms
      • Artificial Intelligence Applications in IT Service Management (Transitioning to AI Applications in IT Service Management)
      • View All
    • Cloud Computing

      • Backup and Data Protection Platforms
      • Cloud Database Management Systems
      • Strategic Cloud Platform Services
      • Server Virtualization (Transitioning to Server Virtualization Platforms)
      • Hybrid Cloud Storage
      • View All
    • Customer Relationship Management

      • Contact Center as a Service
      • CRM Customer Engagement Center
      • Digital Experience Platforms
      • Web Content Management
      • Field Service Management
      • View All
    • Data and Analytics

      • Analytics and Business Intelligence Platforms
      • Data Science and Machine Learning Platforms (Transitioning to AI Platforms For Data Science and Machine Learning)
      • Data Integration Tools
      • Process Mining Platforms (Transitioning to Process Intelligence Platforms)
      • Metadata Management Solutions
      • View All
    • Education

      • Manager and Leadership Training
      • Corporate Learning Technologies
      • eLearning Authoring Tools
      • Higher Education Student Information System Software as a Service (Transitioning to Higher Education SaaS Student Information Systems)
      • Digital Learning Content Providers
      • View All
    • Enterprise Networking and Communications

      • Unified Communications as a Service
      • Global WAN Services
      • Edge Distribution Platforms
      • Intranet Packaged Solutions
      • SD-WAN
      • View All
    • Finance

      • Expense Management Software
      • Financial Close and Consolidation Solutions
      • Financial Planning Software
      • Cloud Financial Management Tools
      • Accounts Payable Applications
      • View All
    • Healthcare and Life Sciences

      • Medical Device Security Solutions (Transitioning to Medical Device Risk Management Platforms)
      • Health Navigation Solutions
      • Claim Editor Software
      • Digital Health Platforms (Transitioning to Healthcare Provider Industry Cloud Platforms)
      • Revenue Cycle Management Software (Transitioning to Revenue Cycle Management Solutions)
      • View All
    • Human Resources

      • Employee Recognition and Reward Systems
      • Workforce Management Applications (Transitioning to Workforce Management (WFM) Technology)
      • Digital Employee Experience Management Tools
      • Talent Acquisition (Recruiting) Suites
      • Cloud HCM Suites for Regional and/or Sub-1,000 Employee Enterprises
      • View All
    • IT Infrastructure and IoT

      • Enterprise Wired and Wireless LAN Infrastructure (Transitioning to Enterprise Wired and Wireless LAN)
      • IT Service Management Platforms
      • Endpoint Management Tools
      • Container Management
      • Infrastructure Monitoring Tools
      • View All
    • IT Security

      • Endpoint Protection Platforms
      • Email Security
      • Managed Detection and Response
      • Security Information and Event Management
      • Security Awareness Computer-Based Training
      • View All
    • Legal

      • Contract Life Cycle Management
      • Electronic Signature
      • Governance, Risk and Compliance Tools, Assurance Leaders
      • Compliance Monitoring Solutions
      • Corporate Governance Services
      • View All
    • Manufacturing

      • Enterprise Asset Management Software
      • Manufacturing Execution Systems
      • Global Industrial IoT Platforms
      • PLM Software in Discrete Manufacturing Industries
      • Computer-Aided Design (CAD) Software
      • View All
    • Marketing

      • Video Editing Software
      • Email Marketing
      • Multichannel Marketing Hubs
      • Voice of the Customer Platforms
      • Customer Data Platforms
      • View All
    • Productivity and Collaboration

      • Document Management
      • Visual Collaboration Applications
      • Collaborative Work Management
      • Knowledge Management (KM) Software
      • Adaptive Project Management and Reporting
      • View All
    • Public Sector and Government

      • Government ERP Solutions
      • Government Budgeting and Planning Solution
      • Cloud-Based ERP for U.S. Local Government
      • Citizen Service Delivery
      • Government Contracting Software
      • View All
    • Retail

      • Digital Commerce
      • Digital Commerce Payment Vendors (Transitioning to Digital Commerce Payment Platforms)
      • Retail Workforce Management Applications (Transitioning to Retail Workforce Management Technology)
      • Retail Assortment Management Applications: Long Life Cycle Products
      • Digital Shelf Analytics
      • View All
    • Sales

      • Revenue Enablement Platforms
      • Configure, Price and Quote Applications
      • Sales Force Automation Platforms (Transitioning to CRM Sales Platforms)
      • Revenue Intelligence (Transitioning to Revenue Action Orchestration)
      • Sales Performance Management
      • View All
    • Supply Chain Management

      • Supply Chain Planning Solutions
      • Transportation Management Systems
      • Warehouse Management Systems
      • Real-Time Transportation Visibility Platforms
      • Supply Chain Strategy, Planning and Operations Consulting
      • View All
    • Utilities

      • Geospatial Information Systems for Energy and Utilities
      • Mobile Workforce Management Software for Utilities (Transitioning to Mobile Workforce Management Solutions for Power and Utilities)
      • Energy Management and Optimization Systems
      • Energy Trading and Risk Management
      • Advanced Distribution Management Systems
      • View All
    • Browse All Categories
  • FOR VENDORS

    • FOR VENDORS

    • Log In to Vendor Portal
    • Get Started
  • REVIEWS

    • REVIEWS

    • Write a Review
    • Product Reviews
    • Vendor Directory
    • Product Comparisons
  • GARTNER PEER COMMUNITY™
  • GARTNER.COM
  • Community GuidelinesListing GuidelinesBrowse VendorsRules of EngagementFAQPrivacyTerms of Service
    ©2026 Gartner, Inc. and/or its affiliates.
    All rights reserved.
  • Categories

      • Application Development
      • Artificial Intelligence
      • Cloud Computing
      • Customer Relationship Management
      • Data and Analytics
      • Education
      • Enterprise Networking and Communications
      • Finance
      • Healthcare and Life Sciences
      • Human Resources
      • IT Infrastructure and IoT
      • IT Security
      • Legal
      • Manufacturing
      • Marketing
      • Productivity and Collaboration
      • Public Sector and Government
      • Retail
      • Sales
      • Supply Chain Management
      • Utilities
      Browse All Categories

      Application Development

      69 markets
      • Observability Platforms
      • Integrated Development Environment (IDE) Software
      • Enterprise Agile Planning Tools
      • Integration Platform as a Service
      • AI-Augmented Software Testing Tools
      • API Management
      • Enterprise Low-Code Application Platforms
      • Robotic Process Automation
      • Business Orchestration and Automation Technologies
      • Business Process Automation Tools
      • DevOps Platforms (Transitioning to DevSecOps Platforms)
      • Enterprise Architecture Tools
      • Custom Software Development Services
      • Code Review Tools
      • Domain Registrars
      • Digital Adoption Platforms
      • Game Engine Software
      • Website Builders
      • Public Cloud IT Transformation Services (Transitioning to Public Cloud Optimization and Transformation Services)
      • Developer Productivity Insight Platforms
      • API Generation Software
      • AI Agents for Application Developers
      • Feature Management
      • Application Platforms (Transitioning to Cloud-Native Application Protection Platforms)
      • Application Crowdtesting Services
      • Prototyping Software
      • Mobile App Analytics
      • Virtual Reality Development Software
      • Green Software Engineering
      • Application Integration Platforms
      • Test Data Management
      • Application Testing Services, Worldwide (Transitioning to Quality Engineering Services)
      • Event Brokers
      • AI-Augmented Code Modernization Tools
      • Microsoft 365 Implementation and Support Services
      • Application Development Life Cycle Management (Transitioning to DevOps Platforms)
      • Digital Twin of an Organization Platforms
      • Independent Third-Party Software Support of Megavendors
      • BPM-Platform-Based Case Management Frameworks
      • Microsoft Product Support Services
      • Product Roadmapping Tools for Software Engineering
      • AI Agent Development Platforms for Software Engineering
      • Application Composition Platform
      • Multiexperience Development Platforms
      • Application Portfolio Management Tools
      • Internal Developer Portals
      • Load Testing Tools
      • Mobile Development Frameworks
      • Cloud Development Environments
      • B2B Gateway Software
      • SAP S/4HANA Application Services, Worldwide (Transitioning to Cloud ERP Services)
      • Blockchain Consulting and Proof-of-Concept Development Services
      • Citizen Application Development Platforms
      • Mobile Application Testing Services
      • API and MCP Testing Tools
      • Value Stream Management Platforms
      • Oracle Cloud Application Services, Worldwide (Transitioning to Cloud ERP Services)
      • SAP Application Services, Worldwide
      • SAP SuccessFactors Service Providers (Transitioning to Cloud ERP Services)
      • Service Mesh
      • Business-Outcome-Driven Enterprise Architecture Consulting (Retired)
      • Oracle Application Services, Worldwide (Transitioning to Cloud ERP Services)
      • Rapid Mobile App Development Tools
      • SAP Selective Test Data Management Tools
      • Augmented Reality Development Software
      • Blockchain as a Service
      • Mobile Application Management (Transitioning to Endpoint Management Tools)
      • Mobile Back-End Services
      • R&D Outsourcing Providers
      View More
  • For Vendors

    • Log In to Vendor Portal 

    • Get Started 

  • Write a Review

Join / Sign In
  1. Home
  2. /
  3. Retarus Secure Email Platform
Logo of Retarus Secure Email Platform

Retarus Secure Email Platform

byRetarus
in Email Security
4.4

Overview

Product Information on Retarus Secure Email Platform

Updated 21st October 2025

What is Retarus Secure Email Platform?

Retarus Email Services provide businesses with comprehensive email security, enterprise-grade management, and transactional email APIs. Retarus Email Security offers advanced threat protection, AI-based sandboxing, and post-delivery protection to safeguard all communications. Retarus Smart Email Management features ensure compliance with data protection regulations and assist organizations in monitoring and archiving email traffic. Retarus Transactional Email APIs provide high-volume business-critical email delivery from applications, and programmatic email communications —without restrictions on volume, processing capacity, or throttling. The solution connects cloud, on-premises, and legacy systems through one centralized email platform. Retarus also offers real-time monitoring and analytics via intuitive dashboards and provides data in standardized Prometheus format for seamless local integration.

Retarus Secure Email Platform Pricing

Retarus provides pricing based on tiered packages which typically include different levels of service features, user licenses, and email volume. Pricing may scale according to the number of mailboxes, specific security modules selected, and additional compliance or archiving options required by the organization. Custom pricing is available depending on business requirements and usage volume.

Retarus Secure Email Platform Product Images

Retarus Dashboard
Retarus Dashboard
Retarus Service Config
Retarus Service Config

Overall experience with Retarus Secure Email Platform

Manager of IT Services
250M - 500M USD, Manufacturing
FAVORABLE

“Great security and reliability for an easy to use service”

4.0
Sep 12, 2023
The service helped use to reduce the administration while massively improving our security
There are no reviews in this category.
CRITICAL

About Company

Company Description

Updated 16th January 2024

Retarus is a company focused on supporting businesses with digital transformation through its cloud services for digital business communication. The company's services function to enable the efficient and secure exchange of information between people, apps, and machines. This aids in the creation of more agile, flexible, transparent, and efficient business processes. Retarus recognizes that rapid technological advances necessitate that businesses adapt their processes, enhance capabilities through innovations and ensure that communication is digital, automated, secure, fast, and reliable. Since its inception in 1992, Retarus, guided by its vision to be the go-to provider for enterprise-level cloud solutions, has expanded its services to include secure communication on various channels like email, fax, SMS, and EDI for businesses across all standards and industries.

Company Details

Updated 21st October 2025
Year Founded
1992
Head office location
München, Germany
Number of employees
201 - 500
Annual Revenue
50M-250M USD
Website
https://www.retarus.com

Do You Manage Peer Insights at Retarus?

Access Vendor Portal to update and manage your profile.

Key Insights

A Snapshot of What Matters - Based on Validated User Reviews

Reviewer Insights for: Retarus Secure Email Platform
Performance of Retarus Secure Email Platform Across Market Features

Retarus Secure Email Platform Likes & Dislikes

Like

Very high security Huge amount of features and services Realy good performance and availability Fast and competent support

Like

Reliable, scalable, fast, secure!

Like

Operations are running smooth, we have never observed any outages, performance issues or similar. Once implemented, the Retaurs platform is working fine.

Dislike

Some settings take a lot of time to get active No exclusion list for post delivery protection Dir sync with notes is hard to setup

Dislike

charging per volumes leaves risk with customer.

Dislike

The administration portal where customer configurations are maintained is not always self-explanatory and some customizing options were difficult to find, even with the help of the documentation.

Top Retarus Secure Email Platform Alternatives

Logo of Proofpoint Threat Protection
1. Proofpoint Threat Protection
4.6
(1400 Ratings)
Logo of Check Point Harmony Email & Collaboration
2. Check Point Harmony Email & Collaboration
4.7
(942 Ratings)
Logo of Mimecast Advanced Email Security
3. Mimecast Advanced Email Security
4.5
(622 Ratings)
View All Alternatives

Peer Discussions

Retarus Secure Email Platform Reviews and Ratings

4.4

(12 Ratings)

Rating Distribution

5 Star
58%
4 Star
42%
3 Star
0%
2 Star
0%
1 Star
0%
Why ratings and reviews count differ?

Customer Experience

Evaluation & Contracting

4.7

Integration & Deployment

4.7

Service & Support

4.7

Product Capabilities

4.8

Filter Reviews
Sort By:
Most helpful
Last 12 Months
Star Rating
Reviewer Type
Reviewer's Company Size
Reviewer's Industry
Reviewer's Region
Reviewer's Job Function
  • Manager of IT Services
    50M-1B USD
    Manufacturing
    Review Source

    Great security and reliability for an easy to use service

    4.0
    Sep 12, 2023
    The service helped use to reduce the administration while massively improving our security
  • Head Of Digital Workplace
    1B-10B USD
    Energy and Utilities
    Review Source

    Since we use Retarus - not a single blacklisting again for our domain!

    5.0
    Jul 7, 2023
    Retarus helps us to lower the risk of blacklisting, spams and get the e-mails (invoices) to the customer - reliable, fast and compliant! Great reporting engine and they are vey open for suggestions!
  • Head of CRM & Customer Engagement IT
    50M-1B USD
    Consumer Goods
    Review Source

    Very stable and reliable service

    4.0
    Apr 27, 2023
    Once implemented, the platform is low-maintenance and running smoothly. During the setup phase, Retarus was a reliable partner and always available for questions.
  • IT Services Associate
    10B+ USD
    Manufacturing
    Review Source

    Reliable partner

    4.0
    Apr 20, 2023
    Retarus is a reliable provider for email security services
  • MANAGER, IT SECURITY AND RISK MANAGEMENT
    1B-10B USD
    Manufacturing
    Review Source

    Review of Retarus secure Email Platform Solution

    5.0
    Feb 18, 2023
    Retarus Secure Email Platform provides an extra layer of Security for Corporate Emails. When Any mail comes to Email Gateway then it has to checked by multiple parameters (Antivirus Scan, AntiSpam filter, Advance Threat Protection (ATP), Sandboxing).
Showing Result 1-5 of 12

Recommended Gartner Insights

  • Critical Capabilities for Email Security
  • Magic Quadrant for Email Security

Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences, and should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.

This site is protected by hCaptcha and its Privacy Policy and Terms of Use apply.


Software reviews and ratings for EMMS, BI, CRM, MDM, analytics, security and other platforms - Peer Insights by Gartner
Community GuidelinesListing GuidelinesBrowse VendorsRules of EngagementFAQsPrivacyTerms of Use

©2026 Gartner, Inc. and/or its affiliates.

All rights reserved.