Gauntlet compared
Gauntlet next to Mimecast, Proofpoint, Barracuda.
Review draft. Competitor cells are unchecked; “To be checked” marks a gap on purpose.
| Gauntlet | Mimecast | Proofpoint | Barracuda | |
|---|---|---|---|---|
| Relays clean mail to any mailbox host | YesChainMail, Microsoft 365, Google Workspace or on-prem Exchange | To be checked | To be checked | To be checked |
| A filtering instance dedicated to the gateway, not shared | Yes | To be checked | To be checked | To be checked |
| Quarantine release by signed, single-use link with no login | Yes | To be checked | To be checked | NoDigest links require sign-in or passcode since Mar 2023 |
| SPF, DKIM and DMARC checked against the sender's own records | Yes | Yes | Yes | Yes |
| Multi-tenant, branded per tenant | Yes | YesPartner/MSP tenants; branding sets per customer | PartlyMSP multi-tenant console; new whitelabel requests stopped Sep 2025 | To be checked |
| Per-domain delivery to its own mail host and port | Yes | YesDelivery routing by domain to a chosen server | To be checked | To be checked |
| Allow and block lists per domain, mailbox or all domains | Yes | YesPermitted/blocked sender policies plus per-user lists | YesAdmins and users allow/block addresses, domains, IPs | YesUsers allow/block senders and domains |
| Staff release their own held mail from a My spam page | Yes | YesUsers release held mail via Personal Portal or digest | YesDigest Release & Approve action for users | YesUsers deliver held mail from digest/user UI |
| Admin audit log of every release and change | Yes | YesImmutable audit logs of admin changes, exportable | PartlyAudit logs exist but only Support can view them | YesAudit log of admin, user, support changes; 14 days |
| Suspend a tenant without destroying held mail | Yes | To be checked | To be checked | To be checked |
| Outlook add-in to report spam and view held mail | Yes | YesMimecast Essentials for Outlook: report, held mail, senders | To be checked | PartlyEmail Protection add-in reports suspicious mail; legacy add-in cannot |
| Outbound relaying with DKIM signing | PartlyIn rollout | YesOutbound DKIM signing via DNS Authentication definition | YesOutbound DKIM signing configurable; needs DNS update | To be checked |
| Daily quarantine digest per tenant | PartlyBuilt and scheduled | YesDigest email notification set, with release/permit/block | YesUser spam digest of blocked mail | YesDigest has Deliver, Allow List, Block List |
| High-availability pair | NoOne filtering server | To be checked | To be checked | To be checked |