Email and collaboration security

Email authentication and DMARC

Services that deploy and monitor SPF, DKIM, DMARC and BIMI to stop others sending mail as an organization's domains.

8 vendors · alphabetical

• DigiCertDigiCert ONE is a platform that includes Trust Lifecycle Manager for organizations that require CA-agnostic certificate lifecycle management.Ownership not established
• dmarcianDMARC was first published in 2012 and was co-authored by dmarcian's founder. dmarcian states that it is fully self-funded. dmarcian has offices in North America, Europe and Asia Pacific.Privately held · primary category
• EasyDMARCEasyDMARC sells a platform that gives Security and IT the context to see what changed, understand what it affects, and act across infrastructure, authentication, legitimate sending, deliverability, and external threats.Ownership not established · primary category
• HornetsecurityHornetsecurity sells a suite of services for Microsoft 365 security, risk, governance, compliance and backup.Owned by Proofpoint, Inc. since 2025
• MimecastMimecast describes the problem it addresses as human risk.Owned by Permira since 2022
• Red SiftRed Sift helps security and IT teams embrace the security protocols that keep the internet safe, such as DMARC, SPF, DKIM and TLS.Privately held · primary category
• SendmarcSendmarc sells a DMARC platform that lets customers manage any number of domains and secures a brand's domain with DMARC protection.Ownership not established · primary category
• ValimailValimail is a DMARC and email authentication company that sells Monitor, a free tool for domain visibility, Enforce, a tool for continuous DMARC enforcement, and Amplify, an add-on for showing a brand logo in the inbox.Owned by DigiCert since 2025 · primary category