MailGuard is a cloud email security gateway from the Australian vendor MailGuard, filtering phishing, malware and impersonation attempts ahead of Microsoft 365, Google Workspace, Exchange and Zimbra. Pricing is not published; MSPs get quotes through MailGuard's channel partner program.
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MailGuard is a cloud email security gateway from the Australian vendor MailGuard, for MSPs and businesses running Microsoft 365, Google Workspace, Microsoft Exchange or Zimbra. It filters phishing, spear-phishing, ransomware and business email compromise attempts inline, ahead of the mailbox, using proprietary heuristic algorithms, machine learning and generative AI, without needing agents installed on endpoints. Spoofing protection runs on Sender ID and SPF, outbound mail is checked against keyword and file-type policies with file-fingerprint data loss prevention, and end users can release their own messages from quarantine rather than waiting on an administrator. Two companion products extend the core filter: MailGuard Live queues inbound and outbound mail for up to 60 days and gives staff webmail access if the primary mail server or Microsoft 365 goes down, and SafeGuard archives every message in an encrypted, WORM-protected store with a minimum three-year retention and full-text search across attachments.
MailGuard is sold through a channel partner program rather than as a self-serve subscription, and the vendor does not publish per-mailbox or per-user pricing on its site (checked September 2026); MSPs get pricing by contacting MailGuard's partner team, who describe three partnership tiers and partner commissions rather than a published rate card. A 14-day free trial is available on request, and there is no free tier once evaluation ends. Deployment is entirely cloud-based: mail is redirected through MailGuard by changing MX records, so there is nothing to install on servers or endpoints, and administration runs through a web console alongside a separate partner console for MSPs managing multiple clients. MailGuard is based in Australia, founded in 2001, and describes itself on its own site as 'a GlobalGuard company', though it does not publish further detail on that ownership structure or when it took effect.
MSPs should confirm current pricing and minimum mailbox counts directly with MailGuard's partner team before quoting a client, since neither is public, and should check whether DMARC monitoring and attachment sandboxing, both absent from MailGuard's own product pages, matter enough to the deal to look at a rival instead.
MailGuard suits an MSP in Australia or New Zealand that wants a single ANZ-based vendor for phishing filtering, continuity and archiving, with a local partner program rather than a global brand's support desk. It has no published pricing, so budgeting a quote takes a sales call rather than a self-serve calculator, and there is no evidence on the vendor's own pages of DMARC monitoring or attachment sandboxing, both worth asking about directly if a client needs them. An MSP already quoting SpamTitan or Barracuda Email Protection through a wholesale billing platform should weigh whether MailGuard's ANZ focus and quote-only pricing fit that existing workflow before switching. Confirm minimum mailbox counts and trial terms on a call.
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TrendAI Email Security Cloud email protection with AI-driven phishing and malware detection, DLP, and Microsoft 365 integration. No reviews yet All alternatives to MailGuard| Feature | Supported | Note |
|---|---|---|
| Phishing and malware filtering | yes | Heuristic algorithms, machine learning and generative AI filter phishing, spear-phishing, ransomware and BEC inline, ahead of the mailbox. |
| Spoofing and impersonation protection | yes | Spoofing protection via Sender ID and SPF, plus dedicated business email compromise detection. |
| Email continuity | yes | MailGuard Live queues mail up to 60 days and gives webmail access during an outage. |
| Archiving | yes | SafeGuard archives every message, encrypted and WORM-protected, minimum three-year retention. |
| Security awareness training bundle | no | No training product in MailGuard's line-up (MailGuard, MailGuard Live, SafeGuard, ImageGuard). |
| API-based post-delivery scanning | no | Vendor states deployment is via MX record change, not API-based post-delivery scanning. |
| DMARC monitoring | unknown | No DMARC monitoring feature found on vendor pages; spoofing protection is described via Sender ID and SPF only. |
| Attachment sandboxing | unknown | Vendor claims zero-day threat detection but does not describe attachment sandboxing specifically. |
| Data loss prevention | yes | File-fingerprint technology, outbound policy enforcement and keyword/file-type content filtering. |
| Email encryption | unknown | SafeGuard's archive storage is encrypted, but no distinct email message encryption feature is described. |
| Microsoft 365 integration | yes | Dedicated Microsoft 365 solution page; vendor describes it as co-built with Microsoft and stackable with Defender. |
| Self-service quarantine | yes | End users can release their own messages from quarantine. |
MailGuard does not publish per-mailbox or per-user pricing on its own site (checked September 2026); the vendor sells exclusively through a channel partner program, and partners quote pricing directly to MSPs and their clients. Anyone comparing MailGuard against a vendor with a published rate card, such as SpamTitan, will need to request a quote first.
No, MailGuard is designed to run alongside Microsoft 365 and Microsoft Defender rather than replace either, deploying through an MX record change so it filters mail ahead of the mailbox as an additional layer. MailGuard describes its Microsoft 365 protection as co-built with Microsoft and stackable with Defender, so an MSP can keep Defender's native filtering in place and add MailGuard on top.
Yes, MailGuard offers a 14-day free trial requested through its website, though the vendor does not publish what happens to mail routing during the trial or whether a credit card is required at signup. There is no ongoing free tier once the trial ends, so continued use needs a paid, partner-quoted subscription.
MailGuard protects Microsoft 365, Google Workspace, Microsoft Exchange and Zimbra, filtering mail for each through the same MX-record-based gateway rather than a Microsoft-only integration. This makes it usable for an MSP with a mixed client base rather than one running only Microsoft 365 tenants.
MailGuard is an Australian company founded in 2001 that describes itself on its own site as 'a GlobalGuard company', indicating a parent ownership structure. MailGuard does not publish further detail about GlobalGuard, when the relationship began, or whether it affects how the product is sold, so an MSP should ask directly if ownership matters to a procurement decision.
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