COMMS
Chatwoot is building an AI-first support platform, with Captain gaining audience targeting and macro automation reaching the keyboard-native workflow.
Alternatives · team communication tools
Gromox alternatives
The best Gromox alternatives in team communication tools, ranked by Sparkpulse's velocity_score.
Updated Sep 23, 2026
Looking for the best alternatives to Gromox? Sparkpulse tracks and ranks 12 alternatives in team communication tools by shipping velocity — how frequently each ships meaningful updates, verified from official changelogs. For reference, Gromox shipped 0 meaningful updates in the last 30 days and carries a velocity score of 2.5 out of 10 in 2026. The alternatives below are ranked the same way, so you're comparing real release momentum, not marketing claims.
About Gromox
Gromox keeps closing the gap with Exchange one protocol surface at a time — this round it's IMAP flags and Outlook for Mac.
Gromox ships a numbered release roughly monthly, each a mix of Exchange-protocol enhancements and fixes across emsmdb, EWS, IMAP, and the store layer. Version 3.10 makes midb synchronize IMAP message flags to and from the mailbox so they survive deletion of midb.sqlite3, adds IMAP keyword support, teaches EWS the Outlook-for-Mac smart response draft types, extends FindPeople and GetUserPhoto to personal contacts, and adds a short-TTL cache for recurring user ID and group membership lookups.
Velocity 2.5 · Last update 28d ago
Top 12 alternatives to Gromox
Ranked by recent ship velocity. Tap any card for the full editorial breakdown, or pivot to a head-to-head.
COMMS
Respond.io upgraded its AI Agents to GPT-5.6 and added TikTok Business Messaging for US accounts.
SUPPORT
Twilio expands Salesforce to omnichannel WhatsApp/SMS, adds ElevenLabs voices to TwiML
COMMS
Cliq 7.0 turns a messaging app into an AI-threaded work surface, and the follow-on releases are expanding its reach.
COMMS
Superhuman rebuilt its mobile apps and wired every inbox into AI assistants — the email client is becoming a suite.
COMMS
FluentBooking 2.4.0 opens the booking system to AI agents via MCP — the most directional release since the plugin launched.
COMMS
Stalwart adds full SCIM v2 provisioning and 24-language calendar support as its standards coverage extends further than most commercial mail servers.
COMMS
Bandwidth ships Identity Presentation (branded calling) in beta — trust layer for enterprise outbound calling.
COMMS
Slack raises the Marketplace bar back to ten installs while the agent platform consolidates.
COMMS
Rocket.Chat finishes the 8.8 calling work while the licence wall for SSO gets a date.
COMMS
The final v1.x release slipped by one patch, but the v2 deadline stands.
COMMS
Element Web 1.12.28 drops older Linux distro support and waves of module updates converge on Module API v2 compatibility.
Gromox vs alternatives — shipping velocity at a glance
Velocity score (0–10) and meaningful releases shipped in the last 30 days, from official changelogs. Higher = shipping faster.
| Product | Velocity | Sparks · 30d | Focus areas | Latest release |
|---|---|---|---|---|
| Gromox (baseline) | 2.5 | 0 | groupwareexchange-compatibilityews | 3.6 lands the full EWS meeting, delegate and task surface |
| Chatwoot | 7.5 | 1 | ai-supportcaptain-aiwhatsapp | Faster macros and improved pickers |
| Respond.io | 7.5 | 0 | customer-messagingai-agentsomnichannel | — |
| Twilio | 6.3 | 1 | cpaasomnichannel-messagingenterprise-crm-integration | Twilio integration with Salesforce Service Cloud Voice is now Omnichannel |
| Zoho Cliq | 6.3 | 1 | team-messagingai-assistantzoho-ecosystem | AI that moves work forward: Inside Zoho Cliq 7.0 |
| Superhuman | 6.3 | 1 | ai-draftingcalendar-integrationmcp | Superhuman Mail for iOS & Android 📱 |
| FluentBooking | 6.3 | 1 | mcpai-agentsbooking | Introducing MCP for AI Agents – FluentBooking 2.4.0 |
| Stalwart | 6.3 | 1 | email-serverscimjmap | v0.16.20 |
| Bandwidth | 6.3 | 0 | voipcommunications-apircs | Identity Presentation – Beta |
| Slack | 6.3 | 0 | agentsmcpdeveloper-platform | Announcing Slack Code |
| Rocket.Chat | 6.3 | 0 | team-chatvoice-callingscreen-sharing | 8.8.0-rc.0: LDAP/SAML go Premium in 9.0, forced private-room E2EE |
| Apprise | 6.3 | 0 | notificationsmajor-versiondeprecation | Last release of the v1.x line — pin before v2 breaks |
| Element | 5.0 | 0 | matrix-protocolmodule-apienterprise-chat | — |
The 12 best Gromox alternatives, in depth
1. Chatwoot · velocity 7.5
Chatwoot is building an AI-first support platform, with Captain gaining audience targeting and macro automation reaching the keyboard-native workflow.
Over the last 30 days Chatwoot shipped 1 meaningful update vs Gromox's 0, most recently “Faster macros and improved pickers”. Its velocity score of 7.5/10 blends that with longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Chatwoot focuses on ai support, captain ai and whatsapp.
Over the last 30 days Chatwoot has been shipping faster than Gromox — a point in its favour if release momentum matters to you.
2. Respond.io · velocity 7.5
Respond.io upgraded its AI Agents to GPT-5.6 and added TikTok Business Messaging for US accounts.
Its velocity score of 7.5/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Respond.io focuses on customer messaging, ai agents and omnichannel.
Respond.io and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Respond.io trajectory → · Compare Gromox vs Respond.io →
3. Twilio · velocity 6.3
Twilio expands Salesforce to omnichannel WhatsApp/SMS, adds ElevenLabs voices to TwiML.
Over the last 30 days Twilio shipped 1 meaningful update vs Gromox's 0, most recently “Twilio integration with Salesforce Service Cloud Voice is now Omnichannel”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Twilio focuses on cpaas, omnichannel messaging and enterprise crm integration.
Over the last 30 days Twilio has been shipping faster than Gromox — a point in its favour if release momentum matters to you.
4. Zoho Cliq · velocity 6.3
Cliq 7.0 turns a messaging app into an AI-threaded work surface, and the follow-on releases are expanding its reach.
Over the last 30 days Zoho Cliq shipped 1 meaningful update vs Gromox's 0, most recently “AI that moves work forward: Inside Zoho Cliq 7.0”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Zoho Cliq focuses on team messaging, ai assistant and zoho ecosystem.
Over the last 30 days Zoho Cliq has been shipping faster than Gromox — a point in its favour if release momentum matters to you.
5. Superhuman · velocity 6.3
Superhuman rebuilt its mobile apps and wired every inbox into AI assistants — the email client is becoming a suite.
Over the last 30 days Superhuman shipped 1 meaningful update vs Gromox's 0, most recently “Superhuman Mail for iOS & Android 📱”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Superhuman focuses on ai drafting, calendar integration and mcp.
Over the last 30 days Superhuman has been shipping faster than Gromox — a point in its favour if release momentum matters to you.
Full Superhuman trajectory → · Compare Gromox vs Superhuman →
6. FluentBooking · velocity 6.3
FluentBooking 2.4.0 opens the booking system to AI agents via MCP — the most directional release since the plugin launched.
Over the last 30 days FluentBooking shipped 1 meaningful update vs Gromox's 0, most recently “Introducing MCP for AI Agents – FluentBooking 2.4.0”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, FluentBooking focuses on mcp, ai agents and booking.
Over the last 30 days FluentBooking has been shipping faster than Gromox — a point in its favour if release momentum matters to you.
Full FluentBooking trajectory → · Compare Gromox vs FluentBooking →
7. Stalwart · velocity 6.3
Stalwart adds full SCIM v2 provisioning and 24-language calendar support as its standards coverage extends further than most commercial mail servers.
Over the last 30 days Stalwart shipped 1 meaningful update vs Gromox's 0, most recently “v0.16.20”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Stalwart focuses on email server, scim and jmap.
Over the last 30 days Stalwart has been shipping faster than Gromox — a point in its favour if release momentum matters to you.
8. Bandwidth · velocity 6.3
Bandwidth ships Identity Presentation (branded calling) in beta — trust layer for enterprise outbound calling.
Its velocity score of 6.3/10 reflects longer-term release cadence; its most recent meaningful update was “Identity Presentation – Beta”.
Where Gromox leans on groupware, exchange compatibility and ews, Bandwidth focuses on voip, communications api and rcs.
Bandwidth and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
9. Slack · velocity 6.3
Slack raises the Marketplace bar back to ten installs while the agent platform consolidates.
Its velocity score of 6.3/10 reflects longer-term release cadence; its most recent meaningful update was “Announcing Slack Code”.
Where Gromox leans on groupware, exchange compatibility and ews, Slack focuses on agents, mcp and developer platform.
Slack and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
10. Rocket.Chat · velocity 6.3
Rocket.Chat finishes the 8.8 calling work while the licence wall for SSO gets a date.
Its velocity score of 6.3/10 reflects longer-term release cadence; its most recent meaningful update was “8.8.0-rc.0: LDAP/SAML go Premium in 9.0, forced private-room E2EE”.
Where Gromox leans on groupware, exchange compatibility and ews, Rocket.Chat focuses on team chat, voice calling and screen sharing.
Rocket.Chat and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Rocket.Chat trajectory → · Compare Gromox vs Rocket.Chat →
11. Apprise · velocity 6.3
The final v1.x release slipped by one patch, but the v2 deadline stands.
Its velocity score of 6.3/10 reflects longer-term release cadence; its most recent meaningful update was “Last release of the v1.x line — pin before v2 breaks”.
Where Gromox leans on groupware, exchange compatibility and ews, Apprise focuses on notifications, major version and deprecation.
Apprise and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
12. Element · velocity 5.0
Element Web 1.12.28 drops older Linux distro support and waves of module updates converge on Module API v2 compatibility.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Element focuses on matrix protocol, module api and enterprise chat.
Element and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Frequently asked questions
What are the best alternatives to Gromox?
The top Gromox alternatives we currently track in team communication tools are Chatwoot, Respond.io, Twilio, Zoho Cliq, Superhuman, ranked by recent ship velocity.
How is this list of Gromox alternatives ranked?
Alternatives are ranked by Sparkpulse's velocity_score — release cadence + 30-day spark count + sector-relative ship rate.
Can I compare Gromox directly with one of these alternatives?
Yes — every card has a "Compare with Gromox" link to a side-by-side /compare page.