Postmark
Postmark adds its own SOC 2 Type 2 report to a run of security work.
A side-by-side editorial comparison of Gromox and Superhuman — release velocity, themes, recent moves, and the top alternatives to consider.
| Feature | Gromox | Superhuman |
|---|---|---|
| Sector | Comms | Comms |
| Velocity score | 2.5 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | groupware, exchange-compatibility, ews, imap | email, team admin, enterprise, mobile |
| Last editorial update | 7d ago | 4d ago |
| Website | Visit → | — |
Gromox 3.13 adds scripts to move Exchange-for-All systems onto it.
Gromox ships a numbered release roughly monthly. 3.13 adds scripts to convert E4A systems to Gromox, full two-way sync of IMAP keywords with MAPI categories, multi-message vCard export and audit logging in emsmdb and zcore, and fixes an EWS gap where any user could answer, alter or move meeting requests in other mailboxes. 3.12 moved MAPI-to-internet conversion onto VMIME with RFC 2231 filenames; 3.11 added IMAP FETCH BINARY and Sent Items copies for send-as and send-on-behalf on shared mailboxes.
Superhuman gives team admins a console and Enterprise a usage report that counts MCP.
Superhuman is a premium email client building a calendar, team comments and AI around its mail core. October's mobile batch added Compact Mode, swipe actions and attachment-aware AI, and the iOS app now fits iPhone Duo. The newest release adds a team admin console on all plans and an Enterprise-only Team Activity page.
Gromox ships a numbered release roughly monthly. 3.13 adds scripts to convert E4A systems to Gromox, full two-way sync of IMAP keywords with MAPI categories, multi-message vCard export and audit logging in emsmdb and zcore, and fixes an EWS gap where any user could answer, alter or move meeting requests in other mailboxes. 3.12 moved MAPI-to-internet conversion onto VMIME with RFC 2231 filenames; 3.11 added IMAP FETCH BINARY and Sent Items copies for send-as and send-on-behalf on shared mailboxes.
The project keeps completing Exchange behaviour for clients that expect it, now including shared-mailbox Sent Items and meeting handling that matches Exchange. 3.13's conversion scripts and audit logging point at migration and compliance as the adoption path, alongside the IMAP work that has run since 3.8. Permission checks on EWS calendar operations show the protocol surface now gets security review, not only coverage.
Expect more EWS permission and behaviour corrections and continued IMAP4rev2 coverage; the E4A scripts suggest further migration tooling from other groupware.
Superhuman is a premium email client building a calendar, team comments and AI around its mail core. October's mobile batch added Compact Mode, swipe actions and attachment-aware AI, and the iOS app now fits iPhone Duo. The newest release adds a team admin console on all plans and an Enterprise-only Team Activity page.
The product is moving from a single-user power tool toward something a company buys and administers. Seat counts, join approvals, billing and role changes now live in one place, and Team Activity reports which members use desktop, mobile or the MCP and whether they touch AI and collaboration features. That is the reporting a buyer needs to justify renewals.
Expect more Enterprise-gated controls built on Team Activity, such as usage-based seat management or policy settings for AI and MCP access. The entries do not show pricing changes, so the timing of any upsell is unclear.
Other Comms products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Gromox or Superhuman.
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See all Gromox alternatives → · See all Superhuman alternatives →
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
They serve adjacent needs but don't currently overlap on shipped themes. Superhuman is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Superhuman is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Comms products to evaluate alongside.
Top Gromox alternatives in Comms are ranked by recent ship velocity. Browse the "Gromox alternatives" section above for the current picks, or visit /alternatives/gromox for the full list with editorial commentary on each.
Top Superhuman alternatives in Comms are ranked by recent ship velocity. Browse the "Superhuman alternatives" section above for the current picks, or visit /alternatives/superhuman for the full list with editorial commentary on each.