Sendmarc excels in providing a comprehensive suite of DMARC related features focused heavily on email security and compliance. We found its primary strength lies in guiding users through the DMARC implementation journey, from initial visibility to enforcement.
Its platform offers detailed aggregate and forensic (failure) reports, along with tools for configuring SPF, DKIM, and BIMI. The emphasis is on proactive domain protection and simplifying what can be a complex set of protocols.
InboxMonster, while offering DMARC monitoring, positions itself more broadly as an email and SMS deliverability platform. Its feature set extends beyond DMARC to cover crucial aspects like inbox placement, spam trap monitoring, and reputation analysis.
We noticed InboxMonster provides significant value through its
Creative Suite
focusing on pre-send workflows and rendering, and a
Deliverability Suite
that gives deep insights into email performance. It's less about the technical setup of DMARC and more about optimizing email outreach.
How easy is each product to use
User experience
Sendmarc offers an intuitive and user-friendly interface that simplifies DMARC management. We found the guided implementation process particularly helpful, especially for those new to DMARC. The dashboards are clear, presenting complex data in an easily digestible format.
The platform aims to make DMARC compliance accessible, reducing the learning curve. However, as some reviews suggest, a learning curve still exists for advanced features, but the support team usually bridges this gap effectively.
InboxMonster's platform, despite being comprehensive, has a learning curve. We observed that while the core deliverability insights are valuable, the sheer volume of data and features can be overwhelming for some users to navigate independently.
However, the consistent feedback points to excellent user support and account managers who help interpret the data and make it actionable. This
white glove set up
and ongoing guidance are crucial for maximizing the platform's utility, especially for those less familiar with deep deliverability analysis.
Which product has the best support
Support
Sendmarc consistently receives high praise for its support team. Many users highlight the team's professionalism, knowledge, and proactive assistance throughout the DMARC journey. They often act as an extension of the internal IT team.
From weekly check-ins to detailed responses and engineer training, the support is geared towards ensuring 100% DMARC success rates. We see a strong commitment to customer success, with prompt resolution of queries.
InboxMonster is renowned for its exceptional and hands-on customer support, often described as a true partnership. We’ve seen numerous testimonials praising their account managers for providing actionable insights and proactively identifying issues.
Their team offers deep expertise in ISP policies, reputation recovery, and regular check-ins. This personalized support is a significant differentiator, especially given the complexity of deliverability, helping clients understand and act on technical information.
Who should use each product
Suitability
Sendmarc is highly suitable for organizations of all sizes looking to achieve DMARC compliance and enhance email security. Its tiered plans, including a generous free trial, make it accessible for SMBs (small to mid-sized businesses) just starting their DMARC journey.
For enterprise and government entities, its Premium and Enterprise plans offer fully managed services, SSO, and advanced governance features. It is particularly strong for MSPs (managed service providers) with its dedicated multi-tenant, co-branded platform for managing multiple clients efficiently.
InboxMonster is best suited for mid-market and enterprise organizations with sophisticated email marketing programs that require deep insights into deliverability and sender reputation. While it offers DMARC monitoring, its strength lies in broader email performance optimization.
It is less focused on MSPs directly managing DMARC for clients and more on internal marketing and deliverability teams. Its comprehensive monitoring of inbox placement, spam traps, and creative rendering makes it ideal for businesses where email outreach is a critical revenue driver and requires constant optimization.
How does Sendmarc compare with InboxMonster?
DMARC report analysis
Ability to parse and analyze DMARC aggregate and forensic reports.
Source detection
Identify all sending sources for a domain, authorized and unauthorized.
Forward detection
Detect when emails are forwarded, which can impact DMARC alignment.
Spoof detection
Identify and block malicious email impersonation attempts.
Notifications and alerts
Receive real-time alerts for DMARC failures or domain abuse.
Available, but some reviews note limited automation.
Customizable alerts for deliverability issues.
Reporting
Generate detailed reports on email authentication and deliverability.
API
Programmatic access to features and data.
Described as API-first approach.
API for real-time validation is upcoming.
Multi-tenancy
Manage multiple client accounts from a single dashboard.
Dedicated platform for MSPs and MSSPs.
Not designed for managing sub-customers.
SPF flattening
Optimize SPF records to avoid DNS lookup limits.
Assistance with SPF configuration.
Focuses on monitoring, not direct record management.
Hosted DMARC
Managed service for DMARC policy deployment and DNS changes.
Offers managed services for implementation.
Primarily a reporting and monitoring tool.
BIMI
Support for Brand Indicators for Message Identification (BIMI).
Explicitly supports BIMI configuration.
Not explicitly mentioned.
MTA-STS/TLS-RPT
Monitoring and reporting for secure transport protocols.
Includes MTA-STS & TLS reporting.
Not explicitly mentioned.
Blocklists and reputation
Monitor domain and IP reputation on various blocklists.
AI-powered assistant for insights and recommendations.
DNS monitoring
Monitor changes and health of DNS records.
Email and DNS analysis tools.
Monitors DMARC, SPF, DKIM records.
Self hostable
Option to host the software on your own infrastructure.
Free trial/free tier
Availability of a free version or trial period.
Offers a Free Trial plan.
Offers a "white glove set up" instead of a free trial.
Drawbacks and what to watch out for
Sendmarc's primary drawbacks revolve around some users noting a learning curve for advanced features and occasional desires for more automated reporting and notifications. InboxMonster, while powerful, can be overwhelming due to its extensive feature set, and its cost is a barrier for smaller organizations, with some additional tools coming at an extra cost.
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.
4.9 / 5(39)
4.9 / 5(44)
Agile, dynamic and great feature set from Sendmarc
4.0 / 5
What do you like best about Sendmarc?
Cost effective tooling to provide the basic security neccessities for organizations. Easy and quick implementation with intuitive reporting. Extremely easy to implement.
What do you dislike about Sendmarc?
Better communucation as a partner for effective implementation with customers.
What problems is Sendmarc solving and how is that benefiting you?
Primarily email impersanation.
Mohamed O.
Head of Managed Services (MSP) Mid-Market (51-1000 emp.)
Josie + InboxMonster has helped our email team tremendously!
4.0 / 5
What do you like best about Inbox Monster?
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.
What do you dislike about Inbox Monster?
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.
What problems is Inbox Monster solving and how is that benefiting you?
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.)
rebyC spreading the love about Sendmarc
4.0 / 5
What do you like best about Sendmarc?
Sendmarc helps organizations protect their email domains from phishing and spoofing attacks.
What do you dislike about Sendmarc?
If your company are considering using Sendmarc or are experiencing challenges with the platform, it's advisable to check the latest reviews, forums, or customer feedback for up-to-date information on potential dislikes or issues.
What problems is Sendmarc solving and how is that benefiting you?
The benefits of using Sendmarc include a reduction in successful phishing attacks, enhanced brand trust, improved email deliverability, and better overall email security. By preventing unauthorized use of domains and increasing the visibility into email authentication, organizations can mitigate the risks associated with email-based threats.
Verified User in Computer & Network Security
Small-Business (50 or fewer emp.)
Great toolset and helpful account support
4.0 / 5
What do you like best about Inbox Monster?
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.
What do you dislike about Inbox Monster?
Right now, there is nothing currently that I do not like or appreciate about Inbox Monster.
What problems is Inbox Monster solving and how is that benefiting you?
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.)
Enhanced Email Security with Sendmarc: Protecting Your Communications
4.0 / 5
What do you like best about Sendmarc?
Sendmarc simplifies email authentication, making it easy for users to implement and manage. It has a User-Friendly Interface. Offers valuable insights into email delivery with Actionable Insights.
What do you dislike about Sendmarc?
There's a learning curve for new users. They could enhance onboarding or provide additional resources.
What problems is Sendmarc solving and how is that benefiting you?
1. Combats Email Spoofing and Phishing
2. Ensures Email Authenticity
3. Improved Email Deliverability and Reputation Management
Verified User in Events Services
Small-Business (50 or fewer emp.)
Valuable Deliverability Insights
4.5 / 5
What do you like best about Inbox Monster?
Inbox Monster provides a lot of valuable insights into how are email deliverability is across many different email service providers.
What do you dislike about Inbox Monster?
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.
What problems is Inbox Monster solving and how is that benefiting you?
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.)
Great team pushing a useful product
4.5 / 5
What do you like best about Sendmarc?
The team are passionate about what they do and always willing to help.
The flexible offering for clients based on their needs/ organisation size.
What do you dislike about Sendmarc?
Nothing I can think of at this stage....
What problems is Sendmarc solving and how is that benefiting you?
Domain security for our clients
Faye S.
Head of Customer Sucess Small-Business (50 or fewer emp.)
A Game-Changer for Email Deliverability
4.5 / 5
What do you like best about Inbox Monster?
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.
What do you dislike about Inbox Monster?
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.
What problems is Inbox Monster solving and how is that benefiting you?
Inbox Monster helps provide valuable insight to our email deliverability and sender reputation.
Verified User in Health, Wellness and Fitness
Enterprise (> 1000 emp.)
Great DMARC Compliance Platform with an exceptional team and support services!
4.5 / 5
What do you like best about Sendmarc?
Sendmarc offers a user-friendly platform with seamless navigation, supported by an excellent customer service team providing swift and detailed responses. With plenty advanced features, its API-first approach ensures effortless integration. Implementation is rapid, complemented by proactive team assistance. Furthermore, its advanced reporting capabilities provide invaluable insights into the overall health of your email ecosystem.
What do you dislike about Sendmarc?
Honestly, there is nothing that I dislike about Sendmarc. The platform is excellent, offering extensive insights and features, backed by a fantastic team. From support to billing systems, everything works seamlessly. The whole experience has been a breeze.
What problems is Sendmarc solving and how is that benefiting you?
Sendmarc has been instrumental in solving several critical problems for us. Primarily, it has effectively stopped impersonation attacks, which has been crucial in protecting our brand integrity. With Sendmarc, no impersonated emails are sent from our domain to our clients, suppliers, or anyone else in the world. Additionally, Sendmarc has guided us to achieve DMARC compliance, significantly enhancing our overall email security. This ensures that our email communications are secure and trustworthy, providing peace of mind for both our organisation and our stakeholders.
Alex R.
Chief Operations Officer Small-Business (50 or fewer emp.)
Great tool with excellent consulting support
4.5 / 5
What do you like best about Inbox Monster?
Clear reporting to understand our deliverability/inboxing, as well as domain/IP reputation factors. And the consulting services offered save us a ton of time, as they leverage existing relationships with email providers to troubleshoot/address inboxing issues. Super easy to use and onboard as well.
What do you dislike about Inbox Monster?
Everything is worth it, but the tool costs more than other deliverability platforms, however, that's largely because they are taking on the work of coordinating with email providers
What problems is Inbox Monster solving and how is that benefiting you?
They offer a one-stop shop of crucial information to understand our sending domain/ip health, and most importantly, offer services that help us work with email providers quickly and effectively. This saves our team a ton of time we would otherwise have to spend coordinating with each ESP
Sendmarc offers a range of plans from a free tier for small businesses to enterprise solutions, while InboxMonster's Deliverability Suite starts at a higher annual price, indicating a focus on larger, more engaged clients.
Small
Up to 10k emails / month
Free (up to 5k emails/month, 1 domain)
Contact for pricing (Deliverability Suite starts $15k/year)
Medium
Up to 100k emails / month
Contact for pricing (Advanced plan from 100k emails/month)
Contact for pricing (Deliverability Suite starts $15k/year)
Large
Up to 1 million emails / month
Contact for pricing (Premium/Microsoft/Enterprise plans)
Contact for pricing (Deliverability Suite starts $15k/year)
Enterprise
Over 1 million emails / month
Contact for pricing (Enterprise & Government plan)
Contact for pricing (Deliverability Suite starts $15k/year)
Suped hard sell incoming!
Still not satisfied with Sendmarc or InboxMonster?