# Zerospam Reviews 2026. Verified Reviews, Pros & Cons | Capterra > Is Zerospam the right Anti-spam solution for you? Explore 135 verified user reviews from people in industries like yours to make a confident choice. Source: https://www.capterra.com/p/173157/ZEROSPAM/reviews --- Zerospam 4.8 (135) Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. [Learn more](https://www.capterra.com/our-story/) * * * Last updated March 13th, 2026 # Reviews of Zerospam Ease of use 4.6 Customer Service 4.7 ## Pros and Cons in Reviews QW Quinn W Sales and Marketing SpecialistInformation Technology and Services, 51 - 200 employeesUsed the software for: Less than 6 months. “Their customer service is among the best in the industry: they are extremely knowledgeable and will help you troubleshoot even if the problem isn't caused by their product.“ April 5, 2023 RG Roland G DevOps and Release ManagerComputer Software, 51 - 200 employeesUsed the software for: 6-12 months. “The user interface is a tad dated, but that's barely relevant.“ September 14, 2020 RG Roland G DevOps and Release ManagerComputer Software, 51 - 200 employeesUsed the software for: 6-12 months. “Zerospam catches 'all the things' that shouldn't get into the mail system and lets 'the good stuff' get in. While it offers a user interface, I can't say I ever got a chance to get to know it as the performance is so good I never actually have to tweak anything.“ September 14, 2020 RG Roland G DevOps and Release ManagerComputer Software, 51 - 200 employeesUsed the software for: 6-12 months. “Pricing is well within reason, I would consider it a bargain considering the administration time saved. While the product itself is reason enough to write this review, the support team is "the cherry on top". “ September 14, 2020 RG Roland G DevOps and Release ManagerComputer Software, 51 - 200 employeesUsed the software for: 6-12 months. “It has all the features you need, none of the fluff you don't. “ September 14, 2020 ## Showing most helpful reviews Showing 1-25 of 135 Reviews Sort by: Most Helpful Rating Company Size Reviewer's Role Length of Use Frequency of Use Suhailah S. Administrative Assistant Retail Used the software for: 2+ years ### "No more spam" July 7, 2021 4.0 Pros Zerospam is critical for me, as my emails somehow got leaks on the internet and since then, too many spam email has landed on my primary inbox. It has create chaos and then i am implementing Zerospam as a quick solution for this problem. Almost no spam email has ever reach my main inbox anymore since then. Cons It will be running on the physical server which will involve a technical knowledge and not for a personal use. Review Source WC Walt C. Owner Information Technology and Services Used the software for: 6-12 months ### "Great product. Needs little support, but when it is required, the support is excellent." December 30, 2019 5.0 Great! Pros I moved all of my client's email from a server based anti-spam solution to Zerospam, which is cloud based. I no longer have to worry about server crashes, power failures or dropped Internet connections. Set up is easy and ZeroSpam support walked me through the first couple of domains I on-boarded. False positives are rare, while very little actual spam gets through. Pricing for domains using Exchange Online is very competitive. That, coupled with the quality of the product and support, makes ZeroSpam a great value! Cons Only a couple of cons, but nothing that out weighs the pros. One, I would like to see the logs update to the current time when clicking Refresh. To update to the most current 24 hour period (even a minute later), you have to leave the logs and come back into them. Two, the use of the names ZeroSpam and Cumulus can be confusing at first. ZeroSpam is the filtering product and Cumulus is the web interface. Though, maybe not possible, if there were any way to only use one name or the other, I think that would help. Alternatives considered [MimeCast Email Security](https://www.capterra.com/p/119826/MimeCast-Email-Security/) Reason for choosing Zerospam Price, based on what I was looking for. After the fact, I found out that ZeroSpam's support is excellent. Review Source Response from Hornetsecurity September 21, 2020 Thanks Walt, it is highly appreciated you review when all you need is a hands-off operation, peace of mind for your business, on a highly secured cloud based service environment and finally no interruptions to service is key for business continuity. BF Bruno F. ED Used the software for: 2+ years ### "Yes but no... We are supposed to be protected but I still don't know until what point" June 13, 2018 2.0 Pros Protection is ongoing, if we go to the web we get to know how many attacks we had. I suppose that we save a lot of time but not having to worry about all these issues. Cons Pricing is a bit expensive, it is hard to define how much we are protected, there is no active follow up Review Source Response from Hornetsecurity January 20, 2020 Thank you for your review. I'm sorry to hear that the scope of protection is unclear. I would be happy to clarify how our filtering works and hwo your domains are being protected. Feel free to reach out to us at any time! DB Darrell B. IT Manager Construction Used the software for: Less than 6 months ### "Protect the Enterprise Without Breaking the Bank" August 6, 2019 5.0 We needed to have access to a Quarantine which we didn't have before. This would result in false-positives not being resolved quickly. Pros Simplicity and low false-positives. The 30-day trail was an extremely easy transition and ZeroSpam were great communicators throughout the short process. Cons Wishing they had an export feature within the LOG section. Reason for choosing Zerospam Cost, simplicity & lower false positives. We have Barracuda Email Security running at a sister organization and the number of false positives makes managing SPAM a full-time job. Review Source Marc L. CIO, Partner Used the software for: 2+ years ### "Best option, hands down, to get rid of 100% of your Spam emails" June 14, 2018 5.0 We never see spam anymore, brings up efficiency for staff not needing to filter this in the already big quantity of emails they receive daily Pros I have been using ZeroSpam in the last 2 companies I have been working and it is for sure the best Anti-Spam solution out there. We do have Microsoft Office 365, which includes an Anti-Spam solution but it does not equal what ZeroSpam is able to do for your company. Try it, trust me you will not remove it once you have it. Cons Nothing, the solution is perfect and the support is more than amazing! Best Cloud Anti-Spam out there Review Source Marco M. Vice-président Used the software for: 2+ years ### "A great solution with an exceptional customer support" August 1, 2018 5.0 Almost no spam and a better Internet connection. Pros Since it is a cloud solution, the spam emails doesn't impact your Internet connection. Easy to set up and after you can almost forget it. I have almost no admin to do on the solution. They have one of the best customer support in the industry : very profesional, help you to solve the problems, even if the problem is not with their solution. Cons A cons is required?!! Serioulsy, with Zerospam, I can't thing of any cons. They do exactly what they need to do. Review Source Bryan J. Sr. Manager, Managed Services Information Technology and Services Used the software for: 1-2 years ### "Great product and service" October 5, 2018 5.0 Compugen switched over to use ZEROSPAM about a year ago after we had problems with Whaling that our former antispam provider could not catch. ZEROSPAM was much better at catching these emails and has made our executives' views on our anti-spam capabilities much more positive. Support has been incredible, more than we could have expected. Pros ZEROSPAM does what traditional anti-spam providers do and does it well. There were a few other features to reduce Whaling and targeted spear-phishing attacks on our executives that were very useful. Also there is an email DR capability that we are able to leverage at very low cost. Cons No real cons, the software works well and the interface is easy to use. Review Source Michel M. Président et Chef de la direction Used the software for: 2+ years ### "Simple, and no maintenance SaaS" July 14, 2018 5.0 We use it to prevent RandsomeWare attack and other malware attack coming through email Pros We needed an Anti-Spam that was easy to setup, also need it to be in Canada, bilingual and that we can resel easily. Cons We also work with SaaS like Cisco IronPort, Witch is much more complex. Sometimes our customer needs a system that allows more complex management facility. and also it is not 100% managed by us. The need Z-S tech to set up functionality can also be a problem. Review Source Fred W. Network Administrator Higher Education Used the software for: 2+ years ### "Our experience has been great overall." June 12, 2018 5.0 Pros That it is not running on our servers. Email filtering seems best done separate from the email server. Exchange servers are complex enough over time. Our previous solutions integrated with Exchange, and this always caused some issues. With zero spam nothing touches our servers. Cons Some of our users don't like needing to log into a website to see the quarantine. I don't personally see this as a problem. Review Source Romy D. Administrateur Systemes et réseau Used the software for: 2+ years ### "Zerospam is a very good tool the best I have seen " July 24, 2018 5.0 it clear more than 99% of spams and when I Use exchange onpromise it gave me access to all my bandwith Pros false positives are very rare the GUI web is intuitive and simple to use I have the controle for every thing, if I want to change something I don't need to call, I just do it on the GUI web the support is great Cons If I don't mistake, because it's update perhaps ,for now it can't filter exchange office 365 out mails Review Source DM Daniel M. Network administrator Used the software for: 2+ years ### "Simple to implement, simple to use, no maintenance to do." June 13, 2018 5.0 already written in the last page Pros I have nothing to do for this spam filtering solution to work perfectly every day!! I know it sound impossible but it's a fact. No hardware to maintain, no VM, no software to update. I do not remember the last time i had to release an email from the quarantine, at least 8 month ago. Installation: A DNS Change only. Simply redirect your MX record to the one Zerospam will give you. That's it. A second step to do that is optional: Firewall filtering/limiting tcp/25. My email server is protected from the bad guys who want to connect to my email server because it only accept SMTP connection on the port 25 from the Zerospam server. The path an email do : you, Zerospam, me. Isolation = safety. Bandwith saving. Because the spam did not come in my infrastructure, they do not use my bandwith and ressource. Virus protection, it add another layer of protection. Support, they are fast to answer to email and i can speak to a human easely. Yes, a real human. It's a Canadian business with server around the world. Usage: A web site will give you the possibility to whitelist, blacklist, use greylisting, access to statistics. last week 95,98% of SPAM!!! This number vary every week. Quarantine, an email can be release from there. You can filter by date, user from or to, subject. Stop reading and use the free trial. Cons I cannot said to my boss that i did and charge overtime because of Zerospam. It cost something like every good product! Peace of mind have a price. Review Source Tom K. President Information Technology and Services Used the software for: 2+ years ### "I have used the service for a few years - excellent filter and great value. " June 24, 2018 5.0 We are more effective rather than weed through a bunch of SPAM. Pros It does an excellent job filtering out the spam garbage we get - very few false negatives. I get a daily report of items filtered that I could look at. There are a few false positives. Cons Nothing negative to report. It works very well. Some pain (work) to check and release the false positives. (sign in) rather than just click a link on the notification e-mail. Review Source VR Verified Reviewer Vice President Information Technology and Services Used the software for: 2+ years ### "Good Quality Services" January 11, 2019 5.0 We have been using Zerospam for the last 10 years minimum, after trying different solution, ZeroSpam offer a good services for the price. Also like the new integration to Office 365. Pros Quality of service and reliability, Easy Setup and Management, Also Support Multiple Customer in one main consol. Cons Nothing is disapointing so far in this software Review Source VR Verified Reviewer Conseiller en architecture technologique Financial Services Used the software for: 2+ years ### "Great customer contact." July 30, 2018 5.0 Pros Quick respond on outbreak, create custom rules to block threat when needed. Stability of the solution is great. Cons Missing some options in the management portal for larger organisation. The visibility on update and issue has improved. Review Source DA Dave A. IT Manager Law Practice Used the software for: 2+ years ### "Zerospam - An excellent and affordable cloud based Anti-Virus/Anti-Spam solution" September 14, 2018 5.0 I have been a customer of ZeroSpam for over 5 years and have never had issues with any part of the service. I would easily recommend them to anyone. Pros Everything about ZeroSpam has been extremely positive. The interaction with the sales team was very good. They outlined their service and what was required in order to implement this for our on-site exchange environment. Installation was a breeze and the DRAMATIC decrease in spam was immediately obvious. Customer service is second to none providing quick response to questions. This is definitely a set it and forget it service. Cons I can't think of a single negative item I could say about ZeroSpam. Review Source AG Alexandre G. Network & System Administrator Information Technology and Services Used the software for: 2+ years ### "Best ant-spam solution for a hosted exchange" August 7, 2018 5.0 Without a proper anti-spam solution all my clients with local or hosted exchange not on big providers such as office 365 had really bad spam problems, which they don't receive anymore with ZEROSPAM implemented. Pros I Love that it blocks most if not ALL the unwanted emails that could be harmful to my PC or the entire network it is on. Cons I don't have much to complain about but if there would be one thing, it is that sometimes is is a little too good and will be delaying new senders as they are grey listed. Review Source Response from Hornetsecurity January 20, 2020 Thank you for your review! Greylisting preferences can be updated in Cumulus, our client management interface. We'll happily walk you through the process. JH James H. Owner Information Technology and Services Used the software for: 2+ years ### "This is a stellar product that works as described and has stellar customer service and support!" June 25, 2018 4.0 Peace of mind! Pros It's rare I give 5 star reviews, but this is a stellar product that works as described and has stellar customer service and support!! Cons There is really only one con; IF you can even call it that, because it's really NOT a high cost, but it would be the cost of the product if I was to say anything was bad about it. Review Source NL Nathalie L. IT Special Projects Consumer Goods Used the software for: 2+ years ### "Can't live without ZeroSpam !" September 14, 2018 5.0 We stopped using it when we migrated to Exchange on CLOUD (O365), we were told it was no longer necessary, but WRONG ! O365 filtering is not great, i am no expert, i want expert to solve it for me ! Pros Console is easy to use, software is great, but most of it, support is wow ! Cons Can't find ! Even when I closed my account the cie was nice with us ! Review Source VR Verified Reviewer IT Specialist Insurance Used the software for: Less than 6 months ### "Simple and Effective Spam Protection" January 4, 2019 5.0 Pros The setup of the protection was very simple and the reduction of spam was immediately noticeable by many users in the company. The default filters were perfect and it struck a perfect balance between spam and legitimate emails. I also like the fact they are Canadian based and all the emails are staying within Canada. Cons I think they need to improve their visibility as a company. After going though so many other solutions, it was nice to find something that fit the needs. I wished I had known of them sooner. Review Source FD Fabienne D. IT security specialist Used the software for: 2+ years ### "Zerospam is very efficiente. Over 1million of our emails are filtered per week with no impact." June 18, 2018 5.0 Pros They react fast. Follow the trend of attacks. They ajust their filters as soon as we report an email not blocked. They are always available to provide reporting information ondemand. The product filtered as well as malware, as phishing, URL links or file attached. Cons The reporting log is missing some information about the emails like, subject or something that would allow us to retreive more info on the incoming emails. Review Source CT Chris T. IT admin Consumer Services Used the software for: 2+ years ### "Overall been a great experience. Once it's setup it just works. Ton's of features for admins" June 12, 2018 5.0 Less email spam. Pros Excellent Anti spam email services for Business's. Once you set this up and tweak it to your liking it just works. Lot's of features in their portal which is upgraded regularly. Redundant services even collects all emails if your own server goes down. Cons Requires per user billing paid for the year. Other then that I don't recall any other cons for this service. Review Source PC Philippe C. Senior Network Architect Information Technology and Services Used the software for: 2+ years ### "Best in the business!" August 7, 2018 5.0 Pros We have been using ZeroSpam for 3 years now as en and user and reseller. It's simply the best anti-spam solution out there. We have clients that have gone from various solutions to ZeroSpam and all have seen improvement in detection rates and a reduction in false positives. Cons The default settings for attachments are a little much, but you can change that. Review Source PD Paolo D. Technical Service Director Used the software for: 2+ years ### "Great software, easy to administrate. Great support team." July 24, 2018 5.0 Only positive, highly recommended for any company wanting to save time and money Pros Easy to administrate, simple interface. Does a really great job eliminating unwanted emails. Protection against viruses and phishing email. Cons Nothing to say against this program. Only positive, highly recommended for any company wanting to save time and money Review Source SD Steve D. President Information Technology and Services Used the software for: 2+ years ### "Very good partner for us with a good product and good service." June 22, 2018 5.0 Peace of mind to protect our customers email. Pros The product is very easy to use and is very efficient. They have a very good team for customer support, always happy to help us. Cons So far there is nothing we don't like about the product or the company. Every time we have technical issue they are there to help in a timely matter. Review Source JR Joel R. Owner Computer & Network Security Used the software for: 2+ years ### "This is a fantastic filter. We use it for many of our clients. " July 19, 2018 5.0 Email spam administration has no longer been an issue with this service. Pros Excellent filtering with very few false positives. Process and pass through time is minimal. No downtime at all. Cons The feature of sending a quarrentine digest was difficult to configure but they have since fixed that. Really a solid product. Review Source Similar Products Featured