Suped

Mail Tower vs InboxMonster

Choose Mail Tower for core DMARC, or InboxMonster for advanced deliverability insights.
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Compare product functionality

Feature set

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Mail Tower focuses on providing a solid foundation for DMARC reporting and monitoring. We found that it excels in parsing DMARC aggregate and forensic reports, offering clear visibility into email authentication results across our sending infrastructure.
It delivers the essential tools needed to achieve DMARC compliance, including clear domain management, policy enforcement, and alerts for authentication failures. While it covers the core DMARC aspects effectively, more advanced deliverability features like granular inbox placement or real-time blacklist (or blocklist) monitoring are less emphasized.
InboxMonster provides a comprehensive suite of tools extending well beyond basic DMARC. We experienced its strength in detailed inbox placement analysis across various providers, reputation monitoring, and sophisticated spam trap detection.
Their platform offers features like creative proofing, device rendering, and AI summaries for pre-send workflows, alongside robust post-send deliverability metrics. It is geared towards maximizing email program performance, with a strong emphasis on proactive issue resolution and deep insights into the entire email lifecycle.
How easy is each product to use

User experience

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Our experience with Mail Tower's user interface indicates a clear, straightforward design. The dashboards are intuitive, making it easy for users to quickly grasp DMARC compliance status and identify potential issues without much fuss. Setting up new domains and configuring reports is a relatively smooth process.
It aims for functional simplicity, which is beneficial for users primarily focused on DMARC without needing a steep learning curve. The navigation is logical, allowing us to find specific reports or settings efficiently.
InboxMonster, while feature-rich, has a UI that requires a bit more exploration due to its extensive capabilities. We found the platform's depth, with numerous features and data sets, can be initially overwhelming, making it hard to immediately discern actionable insights for every single feature.
However, the platform is generally user-friendly once familiarized, with a logical flow for its core deliverability tools. The reports are comprehensive, though some users might need assistance to fully leverage all available data points.
Which product has the best support

Support

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Based on our assessment, Mail Tower provides standard support channels, likely including email and documentation, which is typical for DMARC reporting services. For general DMARC queries and platform navigation, we expect competent assistance to be available.
Users looking for highly specialized, proactive, or consultative support beyond the technicalities of DMARC might find the offerings to be sufficient for routine tasks but less tailored for complex deliverability strategy discussions.
InboxMonster consistently receives high praise for its customer support, and our experience aligns with this. They offer a 'white glove set up' and real-time platform support, indicating a hands-on approach.
The G2 reviews frequently highlight dedicated account managers and proactive assistance in troubleshooting deliverability issues, often engaging directly with email service providers on behalf of clients. This consultative partnership is a significant advantage, particularly for complex deliverability challenges.
Who should use each product

Suitability

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Mail Tower is well-suited for small to medium-sized businesses (SMBs) and organizations primarily focused on achieving DMARC compliance and basic email authentication monitoring. Its straightforward approach makes it accessible for teams with limited dedicated email security resources.
For Managed Service Providers (MSPs), Mail Tower offers a clear path to manage DMARC for multiple clients. Enterprise users needing basic DMARC visibility without deep deliverability analytics will also find it functional.
InboxMonster is ideal for mid-market to enterprise-level organizations with complex email programs where deliverability and inbox placement are critical to revenue and communication. Its comprehensive suites cater to marketing and deliverability teams needing deep insights and proactive management.
While not explicitly marketed for MSPs, its robust reporting and account support could be valuable for managing large-scale client portfolios. SMBs may find its extensive feature set and pricing more than they require for basic needs, though the dedicated support is a significant benefit.

How does Mail Tower compare with InboxMonster?

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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, while effective for core DMARC, may lack the advanced deliverability and inbox placement features that larger, more marketing-centric organizations often require. Its simplicity, while an asset for some, could be a drawback for those seeking deeper analytical tools. InboxMonster's primary drawback lies in its complexity for newcomers and its premium pricing, which places it out of reach for many smaller businesses. The platform's extensive features can make self-service analysis challenging without consistent support interaction.
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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No G2 reviews
G2 is the most popular review platform for DMARC products, so this is a strong signal that this product is not popular.
Josie + InboxMonster has helped our email team tremendously!
I'm newer to the email team that utilizes InboxMonster but from what I've gathered from my coworker who has worked with Josie and InboxMonster for over a year, Josie was instrumental in providing actionable insights to enhance deliverability. We don't have a proper CRM tool to leverage so InboxMonster isn't as much a problem as the tool we're using for email. At the beginning of the year, the team discussed solutions such as better domain/IP allocation, stricter demark policies, and monitoring iCloud; they also noted the impact of email frequency and rogue franchisees on complaint rates. Next steps included investigating unsubscribe inconsistencies, exploring click activity data, discussing IP address optimization, and a future demo of Inbox Monster's "Creative Projects" tool; Josie Garcia will also provide further ISP and deliverability information. Most recently, Josie shared SendGrid-specific recommendations, best practices, and provided platform training, including user management, notifications, campaign tagging, subscriber insights, and spam trap analysis.
Verified User in Maritime
Small-Business (50 or fewer emp.)
Great toolset and helpful account support
The toolset is very robust and they are consistently adding to the functionality. The account support has also been great and incredibly proactive. Thom is the best and always super helpful. Right now, there is nothing currently that I do not like or appreciate about Inbox Monster. Inbox Monster is helping us manage and get insight into deliverability problems when they arise. There is a great toolset that is built behind this management and the additional tools with respect to content rendering is super helpful.
Verified User in Publishing
Mid-Market (51-1000 emp.)
Valuable Deliverability Insights
Inbox Monster provides a lot of valuable insights into how are email deliverability is across many different email service providers. Inbox Monster has many features and data sets, but not all of the data feels immediately actionable and I don't understand what every feature does. Before Inbox Monster, we couldn't see where our emails were landing or what seeds were having deliverability issues.
Verified User in Higher Education
Mid-Market (51-1000 emp.)
A Game-Changer for Email Deliverability
Inbox Monster has been a life saver for our email program. We have worked with Josie for just under a year, but the amount of dedication and support she provided to analyze our deliverability, help us come up with an action plan to remediate our poor deliverability and sender reputation, and ongoing monitoring of trends after working through our issues, has played a significant role in the health and success of our email marketing. Josie is always quick to respond and will walk through the issues with us, giving us valuable insights and recommendations along the way. My team does not have a strong background in deliverability, but Josie and the Inbox Monster team, has made a very technical part of email marketing very easy to understand and action against, allowing us to grow our skillset while also educating the rest of the company on deliverability best practices to ensure we do not fall into the same mess that we worked so hard to pull ourselves out of. In October 2024, we found out, with the help of Inbox Monster, that our inbox rate with Gmail was at 1% with low sender reputation. After working with Josie, we were able to increase and maintain our Gmail inbox rate to 95-100% with high sender reputation within 4 months. I cannot recommend Inbox Monster enough. Email deliverability is overwhelming. This is not an Inbox Monster issue. The team at Inbox Monster is incredibly knowledgeable and gives so much information. A lot of the time, the analysis is easy to follow while meeting with the Inbox Monster team, but the amount of numbers and tabs within the platform make it a little difficult to follow on our own. We have a wonderful support team who are willing to meet at our cadence to discuss, but it's a bit difficult to do our own analysis outside of those meetings. Inbox Monster helps provide valuable insight to our email deliverability and sender reputation.
Verified User in Health, Wellness and Fitness
Enterprise (> 1000 emp.)
Good tool, excellent customer service
It's user-friendly and gives very good insights on your mailing performance. If you're having trouble with deliverability, Inbox Monster is definitely helpful. The seedlists may eventually give you inaccurate data because they never interact with your emails. They try to rotate their emails though. Better deliverability and inbox placement
Verified User in Computer Software
Enterprise (> 1000 emp.)

Pricing

Mail Tower offers annual pricing in Euros for core DMARC, while InboxMonster provides higher-tier, annual pricing in USD for specialized suites focusing on creative, deliverability, or SMS.
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Small
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Medium
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Large
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Enterprise
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Starts at $3,000/year (Creative Suite) or $15,000/year (Deliverability Suite)

Suped hard sell incoming!

Still not satisfied with Mail Tower or InboxMonster?
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Suped double trouble

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