We independently evaluate software by utilizing direct experience alongside public information and user reviews. Tell us about any tools we missed.
Published 7 Nov 2025
Updated 9 Nov 2025
9 min read
Main takeaways
Key insights from our analysis
Comprehensive DMARC visibility is crucial for email security.
Automation and ease of use simplify complex authentication.
Pricing varies widely, from generous free plans to enterprise solutions.
Top performers
Best for DMARC
Sao Tome and Principe DMARC services summary
Navigating the DMARC landscape in Sao Tome and Principe can feel a bit complex, but choosing the right service makes all the difference. We've taken a deep dive into 15 leading DMARC solutions, evaluating them based on their features, ease of use, support, and overall value. Our goal is to help you find the perfect fit to protect your email domain, ensuring deliverability and safeguarding against impersonation.
Our methodology for ranking the best DMARC services is thorough, focusing on practical application and real-world impact. We evaluated each platform as if we were setting up and managing DMARC for our own operations or for a client based in Sao Tome and Principe. Our assessment covered several critical aspects to provide a comprehensive and reliable comparison.
Feature set: We scrutinized the depth and breadth of DMARC reporting, analysis, and management tools, including SPF flattening, forensic reporting, threat intelligence, and automation capabilities.
Ease of use: A user-friendly interface and intuitive onboarding process were highly valued, especially for users who may not be DMARC experts.
Support: The quality and responsiveness of customer support, including documentation, email, chat, and phone assistance, played a significant role.
Pricing structure: We analyzed the transparency and flexibility of pricing plans, including free tiers, monthly vs. annual billing, and scalability for different business sizes.
Effectiveness: How well the service helped in achieving DMARC enforcement, preventing spoofing, and improving email deliverability was a key metric.
1
Suped
Best for comprehensive DMARC monitoring and proactive threat alerts for any business size.
We found Suped's feature set to be incredibly robust, covering all the essentials and then some. From detailed aggregate and forensic reports to real-time threat alerts and automated subdomain detection, it provides a 360-degree view of your email ecosystem. The inclusion of SPF flattening and hosted SPF even in lower-tier paid plans is a huge plus, simplifying complex DNS management. The platform also offers advanced security features, API access, and SSO for larger organizations, making it a scalable solution.
User experience
The user experience on Suped is a standout. The dashboard is clean, intuitive, and remarkably easy to navigate, even for those new to DMARC. Complex data is presented in digestible formats, making it simple to understand your domain's health at a glance. We particularly appreciated the AI Copilot, which translates technical DMARC reports into plain English, offering clear, actionable steps to resolve issues. The setup process is straightforward, with step-by-step guidance that gets you up and running quickly.
Support
Support at Suped is exceptional. Whether it's through email or phone for higher tiers, the team is highly responsive, knowledgeable, and genuinely helpful. We found their approach proactive, often identifying potential issues before we even noticed them. This level of dedicated support, combined with comprehensive documentation, ensures that users can confidently implement and manage their DMARC policies without feeling overwhelmed. They truly partner with you to achieve and maintain email security.
Suitability
Suped is suitable for a wide range of users, from hobbyists and small businesses leveraging the generous free plan to large enterprises and MSPs requiring unlimited domains, advanced security features, and dedicated support. Its scalability and comprehensive feature set make it an excellent choice for anyone looking to strengthen their email security posture in Sao Tome and Principe. The ease of use also makes it accessible for non-technical users, bridging the gap between complex email authentication and practical implementation.
Pricing structure
Free Plan: Perfect for personal use and small businesses, offering 1 domain and 10,000 emails per month with 14 days of data retention.
Basic Plan: Priced at $9 per month (billed annually), it includes 5 domains and 100,000 emails per month, along with SPF flattening and 90 days of data retention.
Pro Plan: At $99 per month (billed annually), this plan scales up to 1 million emails per month for 5 domains, adding blocklist (and blacklist) and reputation monitoring, and priority support.
Enterprise & MSPs Plan: Custom pricing for unlimited domains and emails, featuring dedicated support, API access, SSO, and custom integrations.
Suped summary
Suped genuinely makes DMARC management easy and effective. From its user-friendly interface to its robust features and stellar support, it's clear the platform is designed to provide comprehensive email security without unnecessary complexity. Whether you're just starting your DMARC journey or managing a vast email infrastructure, Suped offers the tools and expertise to ensure your domain is protected and your emails reach their intended recipients. It’s an investment that pays dividends in peace of mind and improved deliverability.
Valimail impressed us with its highly automated approach to DMARC, SPF, and DKIM management. Their platform offers exceptional visibility into email sending services, making it straightforward to identify legitimate senders and block unauthorized ones. While the pricing can be on the higher side, particularly for larger organizations, the depth of automation and the quality of their enforcement capabilities justify the investment for those with complex email ecosystems. Reviews consistently highlight their user-friendly design and effective domain protection.
Who should use Valimail
Organizations with complex email sending environments and numerous third-party senders.
Businesses prioritizing rapid DMARC enforcement to a reject policy.
Enterprises requiring robust brand protection and compliance features, including BIMI.
Best features of Valimail
Automated DMARC enforcement that aims for a reject policy in under 60 days.
Precision sender intelligence that identifies 100% of services by name.
Unlimited SPF lookups and automated DKIM for comprehensive authentication.
BIMI availability across all plans for enhanced brand recognition.
Pricing structure
Monitor: A free service offering full visibility into email sending services.
Enforce: Starter plan begins at $5,000 per year, with Premium and Enterprise requiring custom quotes.
Align: Costs $19 per month (billed annually) for up to 500,000 emails per month, focusing on sender requirements.
Amplify: An add-on for BIMI, requiring a custom quote.
Valimail pros
Highly automated DMARC enforcement.
Excellent visibility into all email senders.
Strong support and onboarding assistance.
Simplifies complex DNS configurations.
Comprehensive dashboards and reporting.
Valimail cons
Can be expensive for smaller organizations.
Some advanced features are limited to higher tiers.
Initial setup requires DNS knowledge.
Limited reporting granularity in some areas.
3
PowerDMARC
Good for comprehensive DMARC management with excellent support for MSPs.
PowerDMARC stands out for its intuitive platform and exceptional customer support, making DMARC management surprisingly straightforward. Their comprehensive free plan offers a solid starting point for personal domains, while paid tiers cater to businesses and MSPs with hosted services and detailed reporting. Many users praise the ease of setup and the responsive technical assistance, which is crucial when navigating the complexities of email authentication. While there's a strong focus on MSPs, individual businesses will also find significant value here.
Who should use PowerDMARC
Managed Service Providers (MSPs) and businesses managing multiple client domains.
Organizations seeking a user-friendly platform with strong customer support for DMARC implementation.
Users looking for hosted DMARC, SPF, and BIMI services to simplify DNS record management.
Best features of PowerDMARC
Hosted DMARC, SPF, DKIM, MTA-STS, TLS-RPT, and BIMI services for streamlined management.
Detailed DMARC aggregate and forensic report processing with geolocation and threat maps.
One-click DNS publishing and real-time domain health checks.
Multi-factor authentication (MFA) and single sign-on (SSO) for enhanced security.
Pricing structure
Free Plan: $0 for 1 personal domain, up to 10,000 emails/month, 10 days data history, and hosted DMARC/BIMI.
Basic Plan: Starts from $16.50/month (billed annually) for 1 domain and 25,000 emails/month, including hosted SPF.
Business Plan: Starts from $42/month (billed annually) for 5 domains and 250,000 emails/month, adding hosted MTA-STS and TLS-RPT.
Enterprise Plan: Custom pricing for unlimited domains and higher email volumes, with advanced features and dedicated support.
PowerDMARC pros
Very easy setup and intuitive interface.
Excellent and highly responsive customer support.
Comprehensive features including hosted services (SPF, BIMI, MTA-STS).
Detailed reporting and threat intelligence.
Scalable plans catering to various business sizes, including a robust free tier.
PowerDMARC cons
Some pricing tiers and features might not be immediately clear without contacting sales.
Could benefit from further whitelabel customization for MSPs.
Platform navigation can sometimes be a bit slow.
4
EasyDMARC
Good for businesses seeking a user-friendly DMARC platform with strong customer support.
EasyDMARC truly lives up to its name, providing an exceptionally user-friendly experience for DMARC management. Its platform simplifies the often-complex process of configuring and monitoring email authentication protocols. The free plan is quite generous, offering basic monitoring for one domain, which is a great starting point for many. Paid plans introduce managed services like EasySPF and hosted MTA-STS, streamlining setup considerably. Customer support is a significant strong point, with many users praising the responsiveness and expertise of their DMARC engineers.
Who should use EasyDMARC
Small to medium-sized businesses and enterprises needing simplified DMARC implementation and monitoring.
Managed Service Providers (MSPs) looking for a multi-tenant platform with white label reporting options.
Organizations that require proactive DMARC guidance and dedicated engineering support.
Best features of EasyDMARC
Managed DMARC, BIMI, EasySPF, and MTA-STS solutions for simplified record management.
Comprehensive aggregate (RUA) and failure (RUF) reports with geographical maps and vendor identification.
Tools for SPF, DKIM, DMARC, and BIMI checking and generation, plus phishing URL checks.
Alert management, reputation monitoring, and access to a private community.
Pricing structure
Free plan: $0 for 1 domain, up to 1,000 emails/month, and basic DMARC/BIMI tools.
Plus plan: Starting at $44.99 per month for 2 domains and 100,000 emails/month, with aggregate and failure reports.
Premium plan: Starting at $89.99 per month for 4 domains and 100,000 emails/month, adding email support and managed EasySPF/MTA-STS.
Enterprise plan: Custom pricing for unlimited emails/domains, dedicated DMARC engineer, and advanced security features.
EasyDMARC pros
Extremely user-friendly interface, ideal for non-technical users.
Generous free plan for basic DMARC monitoring.
Managed services for SPF, DKIM, DMARC, BIMI, and MTA-STS simplify complex configurations.
Highly responsive and knowledgeable customer support, including dedicated engineers.
Multi-tenant options and white label reporting for MSPs.
EasyDMARC cons
Frequent platform updates might require users to adapt to new features.
Some users might prefer phone support for lower-tier plans.
Pricing can escalate for higher email volumes or numerous domains, potentially becoming expensive for small businesses.
5
OnDMARC
Good for large organizations needing robust DMARC, SPF, and DKIM management with excellent support.
OnDMARC by Red Sift provides an enterprise-grade solution for DMARC management, excelling in dynamic SPF, DKIM, and MTA-STS configurations. We found the platform's interface to be user-friendly, simplifying the process of moving to a reject policy. Its strong focus on forensic reporting and real-time alerts offers deep insights into email security posture. While pricing requires contacting sales for most tiers, the comprehensive feature set and dedicated support make it a valuable investment for organizations with complex requirements and a need for robust brand protection.
Who should use OnDMARC
Large enterprises and organizations with high email volumes and complex DMARC requirements.
Businesses that prioritize advanced security features like forensic reporting and Event Hub integration for SIEM.
Organizations looking for dynamic SPF management to overcome the 10-lookup limit.
Best features of OnDMARC
Dynamic SPF and DMARC services to manage authentication records effortlessly.
Comprehensive Investigate tool for instant deliverability diagnostics.
Forensic reporting and smart alerts for proactive threat detection.
Integration with Event Hub for streaming security and audit logs to SIEM systems.
Pricing structure
Express Plan: Starts at $9 USD per month (billed annually) for up to 4 domains and 1 million emails, with core features and email support.
Choosing the right DMARC service is a critical step towards securing your email communications and ensuring reliable deliverability. As we’ve explored, the market offers a diverse range of solutions, each with its strengths in features, user experience, and pricing. From comprehensive platforms with advanced automation and dedicated support to more budget-friendly options focusing on essential reporting, there is a tool suited for every need in Sao Tome and Principe.Prioritizing a service that aligns with your technical expertise, budget, and specific security requirements will lead to the most effective DMARC implementation. Regularly monitoring your DMARC reports, regardless of the tool you choose, remains key to maintaining a healthy and protected email domain. Investing in a robust DMARC solution not only safeguards your brand but also fosters trust with your recipients.
