DMARCwise presents itself as a full-fledged DMARC management platform, and our experience confirms this. It offers a structured approach to DMARC reporting, providing clear visualisations of authentication results for SPF, DKIM, and DMARC. We found its interface adept at categorising email sources, making it straightforward to identify legitimate senders and potential threats.

Beyond basic reporting, DMARCwise integrates features like DMARC record hosting and validation, which simplify the setup process considerably. The platform aims to streamline the journey to a DMARC enforcement policy, offering tools that help us understand and mitigate sending issues that might arise during the transition.

DMARC Report Viewer, being an open-source project, offers a more bare-bones but highly functional approach to DMARC reporting. Its primary strength lies in its ability to parse and display DMARC XML reports in a human-readable format, something it does effectively. We appreciated the straightforward presentation of aggregate data, allowing for quick insights into email authentication.

However, as a self-hosted viewer, it naturally lacks the advanced, integrated features of a commercial platform. It's designed to be a data visualiser rather than a comprehensive management tool. Expect to handle record generation, policy enforcement, and proactive threat detection manually or via other means, as its scope is intentionally limited to report display.

Navigating DMARCwise is generally intuitive, reflecting a design focused on guiding users through DMARC implementation and monitoring. The dashboards are well-organised, presenting key metrics like authentication rates and DMARC policy enforcement status clearly. We found the setup process to add domains and configure DMARC records to be relatively smooth, with helpful prompts and validation steps.

While the breadth of features is impressive, some deeper configuration options require a bit more digging. However, for most day-to-day monitoring and policy adjustment, the user experience is quite fluid, making it accessible even for those relatively new to DMARC, though an understanding of the concepts is still beneficial.

The user experience for DMARC Report Viewer is intrinsically tied to its self-hosted nature. Once deployed, the interface is clean and functional, prioritising data presentation over intricate features. We found it relatively simple to upload or ingest DMARC aggregate reports and view the summarised data, which is its core purpose.

However, the initial setup and ongoing maintenance require technical proficiency, as we are responsible for the server, dependencies, and any customisation. It's not a 'set it and forget it' solution; the user experience demands hands-on involvement from installation to updating, which might be a barrier for less technical users. The beauty, though, is complete control.

DMARCwise offers structured support channels, including email support and guidance across all paid plans. We found their responses to be prompt and knowledgeable, indicating a team well-versed in DMARC intricacies. For users on the free plan, 'best-effort support' is provided, which is a reasonable offering for a no-cost tier.

Their comprehensive documentation also serves as a valuable first line of defense, often addressing common queries without needing direct contact. This combination of responsive human support and accessible self-help resources ensures users can find assistance when needed, particularly crucial during complex DMARC rollouts.

Given that DMARC Report Viewer is an open-source project, formal support channels are non-existent. Our primary means of 'support' came from the community, the project's GitHub repository, and our own technical expertise. Issues or questions are typically posted in GitHub issues, where other users or contributors might offer assistance.

This model means that resolution times can vary greatly, and there's no guarantee of a dedicated team to troubleshoot problems. For those comfortable with open-source communities and self-reliance, this is acceptable. For others, particularly businesses seeking SLA-backed support, this absence of formal support is a significant consideration.

DMARCwise caters to a broad spectrum of users, from SMBs seeking to implement DMARC for the first time to enterprise-level organisations managing complex email infrastructures. For SMBs, the guided approach and clear dashboards help demystify DMARC.

Its multi-domain support and unlimited team members on higher tiers make it suitable for enterprises. MSPs will find value in the 'Pay-as-you-go Plan' which offers unlimited domains and flexible billing, tailored for managing multiple client accounts. The platform's balance of usability and advanced features makes it a robust option for various business sizes and technical proficiencies, seeking a managed DMARC solution.

DMARC Report Viewer is best suited for users and organisations with specific technical capabilities and use cases. It's an excellent choice for individual developers, small teams with strong DevOps skills, or researchers who need a cost-effective (software-wise) way to visualise DMARC reports and maintain full control over their data and infrastructure.

SMBs with sufficient technical staff might also find it appealing. For enterprises or MSPs, while the underlying code is solid, the lack of built-in scalability features, advanced analytics, user management, and formal support might make it less ideal for large-scale, mission-critical deployments without significant custom development and internal resources. It truly shines when self-hosting and maximum control are paramount.