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Microsoft Exchange vs. Mimecast Email & Collaboration Threat Protection vs. RMail

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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Microsoft Exchange

    Score8.6 out of 10
    N/AMicrosoft Exchange is a secure email / messaging gateway with file archiving and encryption / data loss capability, available as a hosted service (Exchange Online) or installed (Exchange Server).N/A

    Mimecast Email & Collaboration Threat Protection

    Score8.7 out of 10
    N/AThe Mimecast Secure Email Gateway is a messaging security option with anti-spam / anti-malware, data loss prevention, large file send, and other features, from UK company Mimecast.N/A

    RMail

    Score10 out of 10
    N/ARMail is RPost’s software-as-a-service solution that enables business users to track and prove email delivery and encrypt sensitive emails. Available as a MS Outlook add-in and for other popular software platforms, RMail works with any email address without any customization required. RMail provides users with a Registered Receipt email record proving delivery status, time of delivery, and exact content.

    $7

    per month

    Pricing
    Microsoft ExchangeMimecast Email & Collaboration Threat ProtectionRMail
    Editions & Modules
    No answers on this topic
    No answers on this topic
    RMail Personal
    $7.00
    per user, per month
    RMail Standard
    $15.00
    per user, per month
    Shared Volume
    Varies by Plan
    for 5 or more users
    Offerings
    Pricing Offerings
    Microsoft ExchangeMimecast Email & Collaboration Threat ProtectionRMail
    Free Trial
    NoYesYes
    Free/Freemium Version
    NoNoNo
    Premium Consulting/Integration Services
    NoNoYes
    Entry-level Setup FeeNo setup feeNo setup feeNo setup fee
    Additional Details———
    More Pricing Information
    Community Pulse
    Microsoft ExchangeMimecast Email & Collaboration Threat ProtectionRMail
    Considered Multiple Products
    Microsoft
    Chose Microsoft Exchange
    Google Workspace has much more limited functionality compared to Exchange. I believe it is a bit cheaper on the most basic subscription tier but that's about the only reason to consider using it. It may also be worth considering if you have other workloads using Google Cloud …
    Incentivized
    Chose Microsoft Exchange
    Given all businesses I have worked for used Windows OS and Microsoft applications, it makes sense to stick with Microsoft Exchange. It's a given that if you use Microsoft applications you should use Microsoft Exchange.
    Incentivized
    Mimecast
    Chose Mimecast Email & Collaboration Threat Protection
    Mimecast is primarily designed for email security, offering a full suite of protection against phishing, spam, malware, advanced persistent threats (APT), and business email compromise (BEC). RMail specializes in secure email delivery and encryption, mainly focusing on …
    Incentivized
    Chose Mimecast Email & Collaboration Threat Protection
    Mimecast Advanced Email Security has been used alongside 365 exchange online archiving
    Incentivized
    Chose Mimecast Email & Collaboration Threat Protection
    In my opinion, Mimecast Advanced Email Security outpaces Microsoft in terms of usability and reduction of spam and phishing emails. Mimecast Advanced Email Security was cheaper than Proofpoint, but I suspect Proofpoint is doing better on staying current with trends than …
    Incentivized
    Chose Mimecast Email & Collaboration Threat Protection
    Abnormal isn't a gateway, but instead performs similar security features via M365 apis. It is very "identity" focused which helps with more modern scams.

    M365 has some email security tools, but they are not as customizable or reportable. Mimecast tools far exceed them.
    Incentivized
    Chose Mimecast Email & Collaboration Threat Protection
    It stacks up very well against it as it offers much more functionality and better detection.
    Incentivized
    Chose Mimecast Email & Collaboration Threat Protection
    Mimecast Secure Email Gateway has a bit more features to use with its out of the box service.
    Incentivized
    Chose Mimecast Email & Collaboration Threat Protection
    Barracuda - We've previously used barracuda and this has been much more powerful of a product with much more granularity. We also considered IronPort and Trustpoint
    Incentivized
    RPost
    No answer on this topic
    Key User Insights
    Would buy again
    94%
    Would buy again
    65 Answers
    93%
    Would buy again
    81 Answers
    100%
    Would buy again
    5 Answers
    Delivers good value for the price
    97%
    Delivers good value for the price
    63 Answers
    98%
    Delivers good value for the price
    80 Answers
    100%
    Delivers good value for the price
    5 Answers
    Happy with the feature set
    99%
    Happy with the feature set
    68 Answers
    98%
    Happy with the feature set
    85 Answers
    100%
    Happy with the feature set
    5 Answers
    Lived up to sales and marketing promises
    100%
    Lived up to sales and marketing promises
    46 Answers
    94%
    Lived up to sales and marketing promises
    68 Answers
    100%
    Lived up to sales and marketing promises
    5 Answers
    Implementation went as expected
    96%
    Implementation went as expected
    52 Answers
    93%
    Implementation went as expected
    71 Answers
    100%
    Implementation went as expected
    5 Answers
    Features
    Microsoft ExchangeMimecast Email & Collaboration Threat ProtectionRMail
    Secure Email Gateway
    Comparison of Secure Email Gateway features of Microsoft Exchange and Mimecast Email & Collaboration Threat Protection and RMail
    Feature
    Microsoft Exchange
    7.3
    84 Ratings
    14% below category average
    Mimecast Email & Collaboration Threat Protection
    7.6
    93 Ratings
    10% below category average
    RMail
    -
    Ratings
    Anti-malware6.567 Ratings8.089 Ratings00 Ratings
    Customizability8.079 Ratings7.492 Ratings00 Ratings
    Data Loss Protection8.368 Ratings6.774 Ratings00 Ratings
    Threat Detection6.566 Ratings7.987 Ratings00 Ratings
    Sandboxing7.444 Ratings8.380 Ratings00 Ratings
    End-to-End Encryption6.767 Ratings7.978 Ratings00 Ratings
    Management Tools8.080 Ratings7.289 Ratings00 Ratings
    Best Alternatives
    Microsoft ExchangeMimecast Email & Collaboration Threat ProtectionRMail
    Small Businesses
    Sophos Email
    Score9.1 out of 10
    Sophos Email
    Score9.1 out of 10
    Paubox Email Suite
    Score9 out of 10
    Medium-sized Companies
    Sophos Email
    Score9.1 out of 10
    Sophos Email
    Score9.1 out of 10
    OpenText Core Email Encryption
    Score9.6 out of 10
    Enterprises
    OpenText Core Email Threat Protection
    Score7.5 out of 10
    Microsoft Exchange
    Score8.6 out of 10
    DataMotion
    Score9.6 out of 10
    All AlternativesView all alternativesView all alternativesView all alternatives
    User Ratings
    Microsoft ExchangeMimecast Email & Collaboration Threat ProtectionRMail
    Likelihood to Recommend
    9.0
    (102 ratings)
    8.3
    (106 ratings)
    10.0
    (7 ratings)
    Likelihood to Renew
    10.0
    (4 ratings)
    8.4
    (3 ratings)
    9.1
    (2 ratings)
    Usability
    8.5
    (6 ratings)
    7.7
    (81 ratings)
    9.1
    (2 ratings)
    Availability
    10.0
    (1 ratings)
    8.0
    (1 ratings)
    -
    (0 ratings)
    Performance
    9.0
    (1 ratings)
    8.0
    (1 ratings)
    9.1
    (1 ratings)
    Support Rating
    9.9
    (12 ratings)
    6.1
    (8 ratings)
    9.1
    (1 ratings)
    Implementation Rating
    10.0
    (1 ratings)
    10.0
    (1 ratings)
    6.4
    (2 ratings)
    Configurability
    7.0
    (1 ratings)
    9.0
    (1 ratings)
    -
    (0 ratings)
    Contract Terms and Pricing Model
    -
    (0 ratings)
    10.0
    (1 ratings)
    -
    (0 ratings)
    Ease of integration
    5.0
    (1 ratings)
    7.9
    (42 ratings)
    -
    (0 ratings)
    Product Scalability
    10.0
    (1 ratings)
    9.0
    (1 ratings)
    -
    (0 ratings)
    Professional Services
    -
    (0 ratings)
    10.0
    (1 ratings)
    -
    (0 ratings)
    Vendor post-sale
    5.0
    (1 ratings)
    8.0
    (1 ratings)
    -
    (0 ratings)
    Vendor pre-sale
    8.0
    (1 ratings)
    8.0
    (1 ratings)
    -
    (0 ratings)
    User Testimonials
    Microsoft ExchangeMimecast Email & Collaboration Threat ProtectionRMail
    Likelihood to Recommend
    Microsoft
    Creating and receiving emails is simple. Managing contacts is a nice feature, especially connecting to Active Directory. Calendar management is also helpful and sharing access to others' calendars for scheduling meetings is useful. And reserving resources such as rooms or equipment is also useful. Personal and shared mailboxes are good features, as well. Tasks are a little lacking, but other than that, the features are thorough.
    Incentivized
    Read full review
    Mimecast
    If you're using the Microsoft 365 ecosystem, Mimecast Email Security CI is a must-have, as it adds an extra layer of email security. With advanced email threat detection capabilities, this tool handles internal threat incidents, ransomware, and phishing, and is effective at scanning attachments and URLs. It is a reliable/effective email security solution for business.
    Incentivized
    Read full review
    RPost
    RMail is great for sending emails with information that is sensitive but that the recipient is not going to put a lot of work into retrieving. I do psychological evaluations for criminal courts and I use it to send reports to courts and attorneys. I need to use something compatible with HIPAA privacy rules, which courts and attorneys are typically not as concerned about. If they had to use a password or go to an outside web address to retrieve the email, they wouldn't do it. It's also common for an attorney to say they didn't get an email, but I always know if they did or not, and I have clear documentation of it, which is important in legal cases.
    Read full review
    Pros
    Microsoft
    • As we have a large user base of 11,000 users we use MailTips to avoid people getting confused with people with similar names in the organization.
    • The integration between Teams Meeting and Resource booking is generally very good. The Scheduling Assistance makes it easy to scan calendars and find free periods to provisionally scheduled events.
    • Marking yourself as Out of the Office and busy is easy, as is sharing your calendar within the team/organization or individuals.
    • Voicemail integration and the ability to receive missed chats in your inbox are highly used and useful.
    Incentivized
    Read full review
    Mimecast
    • Simplicity: Once set up, Mimecast Advanced Email Security is easy to use, intuitive, and simple. This reduces onboarding time with new employees.
    • Robust Audit Trail: Being able to see what happened with specific emails, why things happened, and who was responsible for them helps to reduce troubleshooting time as well as improving overall email observability.
    • Clean Interface: Mimecast Advanced Email Security is a Swiss-Army-Knife of email security. There are many different configurations and complex rules that can be implemented. To make this manageable Mimecast Advanced Email Security has implemented a simple and clean UI. Being able to favorite commonly used features makes a huge difference in usability.
    • Simple SSO Integration: This seems like a no-brainer, but its odd to see how many SaaS products either don't support SSO, or make it so complicated and convoluted that setup and maintenance becomes a fully time job.
    Incentivized
    Read full review
    RPost
    • Read receipts tell you the time a message was actually opened
    • The electronic signature feature is nice, and usually not included with these types of services
    • Many times, a recipient doesn't need a password to open their email. RMail leverages TLS technology in most cases
    • Recipients do have the option of creating an account, but generally they don't need to
    • Outlook integration is very easy to set up
    • Gmail integration within Chrome is pretty amazing
    Read full review
    Cons
    Microsoft
    • The two main factors for the better reliability & Uptime of internally hosted Exchange Server depends on Exchange Server configuration and the level of investment the organization is willing to provide for hosting the Exchange Server On-Premise Environment. As the data is stored in the organization’s hardware, any disaster may lead to the loss of email and servers.
    • Losing data might affect business continuity and rebuilding it can be costly.
    • Security remains a major concern.
    • Security of data loss is main concern. To ensure that, organization needs to configure networks, systems and Exchange platform against possible threats.
    • Hardware and license costs are high.
    Incentivized
    Read full review
    Mimecast
    • I would like to see some additional improvement around the attachment protection, specifically what may be getting caught and what types of files are attempting to be delivered via email by impersonators.
    • The Targeted Threat Protection is a great product, and I wish there was a dashboard for this service where we could easily see the types of emails and/or links that have been caught as part of the protection module that could be shared with executives.
    • Finally, I feel that the phishing protection is great and honestly don't believe there should be much improvement needed there.
    Incentivized
    Read full review
    RPost
    • Program plug-in crashes on occasion.
    • Issues can arise if your computer's clock is not synced to RMail's time servers.
    • Setup was initially tedious (but has gotten much better since 2019).
    Incentivized
    Read full review
    Likelihood to Renew
    Microsoft
    Email and calendars in a business setting are requirements. And Microsoft continues to be the standard of business applications. Microsoft 365 makes Microsoft Exchange easy to use. Everything is in the cloud. Let Microsoft take care of the hardware, the software, and the security. You just enable your business users with the functionality they need.
    Incentivized
    Read full review
    Mimecast
    There is no question as to the value of the product to the business and the disruption of changing vendors would not be worth any savings possibly achieved by switching.
    Incentivized
    Read full review
    RPost
    I don't think RPost has any competition, at least none that I can use. I think that once registered email becomes widely accepted (someday soon?), it will be indispensable for anyone in business, and RPost is the leading vendor (maybe the only vendor).
    Read full review
    Usability
    Microsoft
    Microsoft Exchange has come a long way over the years and has nowhere near the technical overhead required for support as it did back in 2003/2007 and prior. The integrations with Teams, Defender, Sharepoint, Copilot and many other products make it a solid and well-rounded tool used for many day-to-day tasks.
    Incentivized
    Read full review
    Mimecast
    Mimecast advanced email security is an excellent tool, and even better, all the tools can be accessed from a single console. One thing I love about Mimecast is that when you add features to your account, they are automatically added to your console, which you already have experience with. No need to learn a new console.
    Incentivized
    Read full review
    RPost
    It is as simple as downloading a plug-in or installing a chrome extension, then you click a button to use it. The interface is straightforward.
    Read full review
    Reliability and Availability
    Microsoft
    Exchange is setup with multiple servers behind load balancers to provide high availability.
    Incentivized
    Read full review
    Mimecast
    Overall, it's very good, but I do remember a few times in the past year we have seen some availability issues.
    Incentivized
    Read full review
    RPost
    No answers on this topic
    Performance
    Microsoft
    I would say it's the best email product I've experienced.
    Incentivized
    Read full review
    Mimecast
    Pages need to consistently load quickly. Sometimes good, sometimes not.
    Incentivized
    Read full review
    RPost
    Works well routinely without problems.
    Read full review
    Support Rating
    Microsoft
    We have a good enterprise agreement with Microsoft which affords us quick phone support. I have found the support staff knowledgeable and prompt with a solution when required. At times it may be difficult to schedule a call back, this is mainly due to our need for calls early in the morning which happens to be during a shift change at Microsoft support.
    Incentivized
    Read full review
    Mimecast
    When calling them you get best in the world customer services but as previously mentioned their online community and capabilities are a bit lacking. They want you to log into their portal to see updates on issues (vs. using a public facing service) and I rarely find the answers to my issues in electronic format. Their online presence is only helpful with the simplest of issues.
    Incentivized
    Read full review
    RPost
    Support is easy to access via email or phone. They also reach out to you periodically with new features, but they aren't intrusive about it. I usually appreciate it when I get an email from RMail, which is not very often.
    Read full review
    In-Person Training
    Microsoft
    No answers on this topic
    Mimecast
    We did not have in-person training. All was done through meetings and on phone.
    Incentivized
    Read full review
    RPost
    No answers on this topic
    Online Training
    Microsoft
    No answers on this topic
    Mimecast
    Training was good from Mimecast as well as the Mimecast knowledgebase.
    Incentivized
    Read full review
    RPost
    No answers on this topic
    Implementation Rating
    Microsoft
    Implementation/conversion can be quite complex and, unless you have certified Exchange administrators in-house, you should strongly consider a 3rd party consultant for this implementation.
    Incentivized
    Read full review
    Mimecast
    Easy to set up and configure, but did have Mimecast assistance.
    Incentivized
    Read full review
    RPost
    Works great.
    Read full review
    Alternatives Considered
    Microsoft
    Microsoft Exchange Product The best cloud-based enterprise-grade archiving platform with a host of features that enable files to be securely archived and retrieved with advanced search options. This tool is very easy to use and has a User-friendly interface. It is a highly reliable platform that allows all employees to automatically store their data without any limitations. It offers a cost-effective solution with customized policy management. We are happy that the customer support team is always fast and concerned, and the product's uninterrupted service experience. It is very good that it stores data in real-time without losing it, even in the event of a disaster. The cost-effective solution and integration with other tools are seamless.
    Incentivized
    Read full review
    Mimecast
    Mimecast Advanced Email Security is FAR superior. Sophos practically gave us the email for free and we still didn't want it. Sophos also does not do both Gateway and API properly. Mimecast Advanced Email Security's AI-Powered net is next level.
    Incentivized
    Read full review
    RPost
    RMail is really useful when wanting to send important encrypted information, and have control of what happens on the other end. It also comes with a complete set of features that help in any other way you can imagine. I've been through other products, and nothing compares to it.
    Read full review
    Scalability
    Microsoft
    The only time Exchange has failed us is when we did something to cause the failure.
    Incentivized
    Read full review
    Mimecast
    The solution continues to grow and add features.
    Incentivized
    Read full review
    RPost
    No answers on this topic
    Professional Services
    Microsoft
    No answers on this topic
    Mimecast
    Professional services for our setup was excellent, quick and knowledgeable.
    Incentivized
    Read full review
    RPost
    No answers on this topic
    Return on Investment
    Microsoft
    • It has been an important factor in allowing seamless communication with clients and scheduling business meetings, which in turn works in the company's favor.
    • Haven't noticed any negative impact Exchange has had on our ROI. The support team is also responsive and helpful.
    Incentivized
    Read full review
    Mimecast
    • Enhanced email security across the business.
    • This product has reduced the risk of being hit by malware/phishing; Mimecast has been holding emails efficiently after reviewing emails.
    • The reporting side is practical, helps create a business case for the product, and shows its worth.
    Incentivized
    Read full review
    RPost
    • There's not much ROI, because we don't get it much cheaper than the list price.
    • However, being able to offer this service strengthens our service offerings.
    Read full review
    ScreenShots

    RMail Screenshots

    Screenshot of EMail encryptionScreenshot of Encrypted EmailScreenshot of Large File SharingScreenshot of Receipt AuthenticationScreenshot of Registered ReceiptScreenshot of SideNote