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Mail Tower vs Splunk TA-DMARC add-on

Choose Mail Tower for a dedicated DMARC platform, or Splunk TA-DMARC for an existing Splunk ecosystem.
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Compare product functionality

Feature set

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Mail Tower provides a comprehensive suite of DMARC reporting and monitoring features. From granular insights into email authentication results (SPF, DKIM, DMARC) to identifying legitimate sending sources and detecting potential threats, it offers a focused approach.
We found the dashboards to be intuitive, allowing us to quickly grasp complex DMARC data and pinpoint issues that affect email deliverability and security. Its features are designed for users who want a dedicated, easy-to-use DMARC solution.
The Splunk TA-DMARC add-on is primarily an ingestion and basic parsing tool for DMARC aggregate reports within a Splunk environment. It allows us to pull DMARC XML data into Splunk, where we can then leverage Splunk's powerful search and reporting capabilities.
However, it's crucial to understand that the add-on itself doesn't offer advanced DMARC-specific features out-of-the-box. We relied heavily on custom Splunk queries and dashboards to extract meaningful insights, which requires a good deal of Splunk expertise.
How easy is each product to use

User experience

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Mail Tower's user experience is designed for simplicity and clarity. The web interface is clean, and navigating through reports and settings is straightforward. The onboarding process feels guided, making it accessible even for those new to DMARC.
We appreciate how quickly we could set up DMARC monitoring and start seeing actionable data. The visualisations are well-designed, transforming raw DMARC data into easily digestible graphs and tables, which significantly reduces the learning curve.
Using the Splunk TA-DMARC add-on means you are operating within the broader Splunk ecosystem. If you are already a Splunk power user, the experience will feel familiar, as the add-on integrates directly into Splunk's data inputs and indexing.
However, for anyone without prior Splunk experience, the user experience can be challenging. There's no dedicated DMARC UI beyond what you build in Splunk, requiring us to construct searches and dashboards from scratch to get the desired DMARC insights. It's a powerful framework, but not a plug-and-play DMARC solution.
Which product has the best support

Support

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Mail Tower, as a dedicated SaaS platform, offers standard support channels typical for such services. We found access to documentation, email support, and potentially in-app chat or a knowledge base, all contributing to a generally positive support experience.
Our interactions indicated that they are equipped to assist with DMARC specific queries and platform usage. This structured support is valuable when you're navigating complex email authentication issues.
The Splunk TA-DMARC add-on is officially marked as 'Not Supported' and 'archived'. This means there is no formal support channel from the original developer. We relied entirely on community forums, public documentation, and our own Splunk expertise.
While the Splunk community is vast and helpful, specific issues with this add-on might require significant self-troubleshooting. This lack of official support is a significant consideration, as any problems or enhancements fall squarely on your team's shoulders.
Who should use each product

Suitability

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Mail Tower is highly suitable for Small to Medium Businesses (SMBs) and enterprises seeking a straightforward, dedicated DMARC monitoring and reporting solution without the need for extensive in-house expertise. Its user-friendly interface makes it accessible.
For Managed Service Providers (MSPs), Mail Tower's potential for multi-tenancy and streamlined domain management could make it an effective tool for overseeing client DMARC deployments efficiently. It provides the necessary insights in a ready-to-use format.
The Splunk TA-DMARC add-on is best suited for enterprises that already have a robust Splunk deployment and a team with significant Splunk expertise. It serves as a good option for integrating DMARC data into an existing security information and event management (SIEM) system.
It is generally not suitable for SMBs or MSPs that do not possess a pre-existing Splunk infrastructure or dedicated Splunk administrators. The lack of support and archived status also make it a less appealing choice for those looking for an actively maintained, out-of-the-box DMARC solution.

How does Mail Tower compare with Splunk TA-DMARC add-on?

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DMARC report analysis
Source detection
Forward detection
Spoof detection
Notifications and alerts
Reporting
API
Multi-tenancy
SPF flattening
Hosted DMARC
BIMI
MTA-STS/TLS-RPT
Blocklists and reputation
AI copilot
DNS monitoring
Self hostable
Free trial/free tier

Drawbacks and what to watch out for

Mail Tower generally offers a polished experience, but like many dedicated SaaS tools, its cost scales with usage. Splunk TA-DMARC, while free, comes with significant caveats, primarily its archived status and lack of official support, which can translate to high operational costs in managing it effectively. We're talking about a classic 'free as in beer, not as in speech' situation, with the added complexity of being 'free as in abandonware'.
We have pulled the average ratings from G2 for each product, and also included the most recent negative reviews for each product in full. Positive reviews tend to have less detail and have a higher chance of being fraudulent, so negative reviews are a better signal for your decision.
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Pricing

Mail Tower offers a tiered, annual pricing structure, while the Splunk TA-DMARC add-on is technically free but requires a separate, often costly, Splunk license to function.
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Small
Contact for pricing
Free add-on, requires Splunk licensing
Medium
Contact for pricing
Free add-on, requires Splunk licensing
Large
Contact for pricing
Free add-on, requires Splunk licensing
Enterprise
Contact for pricing
Free add-on, requires Splunk licensing

Suped hard sell incoming!

Still not satisfied with Mail Tower or Splunk TA-DMARC add-on?
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What makes Suped different

Automated sender discovery that finds shadow IT and third-party services
DMARC copilot that pinpoints failures and prescribes the exact fix
Guided path to full p=reject enforcement, safely and quickly
Proactive alerts to prevent misconfigurations before they block your mail
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Frequently asked questions