DMARC Digests by Postmark focuses on providing clear, concise DMARC reporting. Its primary function is to ingest DMARC aggregate reports and present them in an easily digestible format. We found the dashboard to be very straightforward, offering a quick overview of DMARC compliance, sources sending on your behalf, and potential authentication failures.

The feature set is intentionally lean, concentrating on the core aspects of DMARC monitoring. It provides 60 days of DMARC history, which is sufficient for many smaller organizations to track trends and identify issues. While it doesn't boast an extensive list of advanced features, what it does, it does well, without unnecessary clutter.

DMARC Expert, on the other hand, offers a much broader array of services that extend beyond simple DMARC reporting. We observed robust capabilities for DMARC deployment and maintenance, including SaaS DMARC report analysis, and monitoring changes to SPF, DKIM, and DMARC records with alerts. They emphasize a more hands-on approach, often including expert sessions.

Beyond core DMARC, DMARC Expert provides advanced features like IP blacklist (blocklist) checks, behavior-based anomaly detection using AI, spoofed email address detection, and hosted SPF and BIMI. They also offer technical takedown services for fraudulent domains, which positions them as a more comprehensive email security and brand protection platform rather than just a DMARC reporter.

The user experience for DMARC Digests by Postmark is exceptionally clean and intuitive. We found it very easy to navigate the dashboard and understand the presented data. The interface is minimal, which helps in quickly identifying key DMARC metrics without being overwhelmed by complex charts or jargon.

Setting up a domain is straightforward, requiring minimal technical expertise. The reports are presented as 'digests,' making the information accessible even for those who aren't DMARC experts. It truly lives up to its name, providing digestible insights into your email authentication status. It’s an ideal tool for quick checks and maintaining visibility.

DMARC Expert presents a more feature-rich, and consequently, a slightly more complex user experience. While the DMARC reports analyzer is clear, the sheer breadth of services means there's more to learn and configure. The platform integrates various security components, which can be a bit much for a novice user to grasp immediately.

However, for those familiar with email security and DMARC intricacies, the interface provides deep insights and granular control. The focus often shifts towards expert-assisted deployment and continuous surveillance, indicating that the UX is designed to be augmented by their consulting services, especially for larger or more complex environments. It's not a 'set and forget' tool in the same way DMARC Digests can be.

DMARC Digests by Postmark offers what they describe as 'friendly human support' with actionable guidance. Given the product's straightforward nature, extensive support might not be needed for daily operations. We found their support documentation to be clear and helpful, addressing common questions effectively.

For core DMARC reporting issues, their support team is generally responsive and able to provide clear steps to resolve problems. The focus is on empowering users to manage their DMARC journey with minimal hand-holding, aligning with the product's philosophy of simplicity.

DMARC Expert places a significant emphasis on expert support and consulting, which is a key differentiator. Their DMARC Premium plan includes Webex sessions for support, and the Enterprise plan offers 'X' (determined by need) Webex sessions and dedicated multidisciplinary consultants. This suggests a highly personalized and involved support model.

They also offer a 'DMARC project accelerator' service, providing senior DMARC experts for on-demand intervention and coaching. This level of support is geared towards organizations that require deep expertise, project management, and hands-on assistance, especially during complex DMARC deployments or ongoing management. It's more of a partnership than a typical customer service interaction.

DMARC Digests by Postmark is exceptionally well-suited for Small to Medium Businesses (SMBs) and individual domain owners who need a simple, cost-effective way to monitor their DMARC compliance. Its ease of use and clear reporting are perfect for those who don't have dedicated email security teams.

For Managed Service Providers (MSPs), it might be too simplistic for managing multiple clients with diverse, complex needs, lacking multi-tenancy features. Enterprises might find it insufficient for their advanced requirements, such as extensive forensic reporting or integrated brand protection. Its appeal is in its focus and simplicity.

DMARC Expert is designed for larger organizations, enterprises, and Managed Security Service Providers (MSSPs) who require a comprehensive email security and DMARC management solution. Its multi-tenancy dashboard makes it ideal for MSPs/MSSPs managing numerous client domains, and the array of advanced features caters to complex enterprise environments.

While SMBs could use it, the extensive feature set and pricing structure may be overkill. Its strength lies in its ability to offer continuous surveillance, expert consulting, and robust protection against sophisticated phishing and impersonation attacks, making it a strong choice for businesses with critical brand reputation concerns and significant email volumes.