COMMS
Fonoster lets voice agents pick Anthropic, Google or Groq models and record calls with one switch.
Alternatives · team communication tools
Gromox alternatives
The best Gromox alternatives in team communication tools, ranked by Sparkpulse's velocity_score.
Updated Nov 9, 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 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.
Velocity 2.5 · Last update 7d 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
Salesmsg's Sherpa AI now sends replies and builds broadcasts on request, with approval first.
COMMS
Rocket.Chat patches 8.9 LTS with the load fixes from 9.0 while the candidate reaches rc.7.
SUPPORT
Twilio ships GA reconnect and mid-call config for Conversation Relay voice agents.
COMMS
Element X Android turns on multi-select forwarding and better search in v26.11.0.
COMMS
Netcore keeps publishing unified-platform explainers with no product release.
COMMS
Element 1.12.34 RC.1 keeps call picture-in-picture and adds read receipts to the labs timeline.
COMMS
Signal Desktop's 8.35 beta returns to fix-only notes after contact sharing.
COMMS
Misskey's next release cuts server memory by up to 140MB with a new start script.
COMMS
Subsplash turns its Dashboard Home into one view across every church product
COMMS
mailcow's November release patches an admin RCE and reworks sync jobs.
COMMS
Superhuman gives team admins a console and Enterprise a usage report that counts MCP.
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 | — |
| Fonoster | 7.5 | 0 | programmable-voicevoice-aillm-providers | — |
| Salesmsg | 6.3 | 1 | business-textingai-assistantai-agents | Sherpa AI sends messages and builds broadcasts on request |
| Rocket.Chat | 6.3 | 0 | team-chatlicensingself-hosted | — |
| Twilio | 6.3 | 0 | messagingvoice-aiaudience-segmentation | — |
| Element X Android | 5.0 | 0 | matrixmessagingtimeline renderer | — |
| Netcore Cloud | 5.0 | 0 | customer-engagementecommercemarketing-automation | — |
| Element | 5.0 | 0 | encryptionrecovery-keysmodule-api | — |
| Signal Desktop | 5.0 | 0 | beta-channelmobile-parityinbox-organization | — |
| Misskey | 5.0 | 0 | fediverseactivitypubself-hosted | — |
| Subsplash | 5.0 | 0 | church-platformdashboardworkflow-automation | — |
| mailcow | 5.0 | 0 | mail-serverself-hostedsecurity-updates | — |
| Superhuman | 5.0 | 0 | emailteam adminenterprise | — |
The 12 best Gromox alternatives, in depth
1. Fonoster · velocity 7.5
Fonoster lets voice agents pick Anthropic, Google or Groq models and record calls with one switch.
Its velocity score of 7.5/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Fonoster focuses on programmable voice, voice ai and llm providers.
Fonoster and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
2. Salesmsg · velocity 6.3
Salesmsg's Sherpa AI now sends replies and builds broadcasts on request, with approval first.
Over the last 30 days Salesmsg shipped 1 meaningful update vs Gromox's 0, most recently “Sherpa AI sends messages and builds broadcasts on request”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Salesmsg focuses on business texting, ai assistant and ai agents.
Over the last 30 days Salesmsg has been shipping faster than Gromox — a point in its favour if release momentum matters to you.
3. Rocket.Chat · velocity 6.3
Rocket.Chat patches 8.9 LTS with the load fixes from 9.0 while the candidate reaches rc.7.
Its velocity score of 6.3/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Rocket.Chat focuses on team chat, licensing and self hosted.
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 →
4. Twilio · velocity 6.3
Twilio ships GA reconnect and mid-call config for Conversation Relay voice agents.
Its velocity score of 6.3/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Twilio focuses on messaging, voice ai and audience segmentation.
Twilio and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
5. Element X Android · velocity 5.0
Element X Android turns on multi-select forwarding and better search in v26.11.0.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Element X Android focuses on matrix, messaging and timeline renderer.
Element X Android and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Element X Android trajectory → · Compare Gromox vs Element X Android →
6. Netcore Cloud · velocity 5.0
Netcore keeps publishing unified-platform explainers with no product release.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Netcore Cloud focuses on customer engagement, ecommerce and marketing automation.
Netcore Cloud and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Netcore Cloud trajectory → · Compare Gromox vs Netcore Cloud →
7. Element · velocity 5.0
Element 1.12.34 RC.1 keeps call picture-in-picture and adds read receipts to the labs timeline.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Element focuses on encryption, recovery keys and module api.
Element and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
8. Signal Desktop · velocity 5.0
Signal Desktop's 8.35 beta returns to fix-only notes after contact sharing.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Signal Desktop focuses on beta channel, mobile parity and inbox organization.
Signal Desktop and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Signal Desktop trajectory → · Compare Gromox vs Signal Desktop →
9. Misskey · velocity 5.0
Misskey's next release cuts server memory by up to 140MB with a new start script.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Misskey focuses on fediverse, activitypub and self hosted.
Misskey and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
10. Subsplash · velocity 5.0
Subsplash turns its Dashboard Home into one view across every church product.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Subsplash focuses on church platform, dashboard and workflow automation.
Subsplash and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
11. mailcow · velocity 5.0
Mailcow's November release patches an admin RCE and reworks sync jobs.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, mailcow focuses on mail server, self hosted and security updates.
mailcow and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
12. Superhuman · velocity 5.0
Superhuman gives team admins a console and Enterprise a usage report that counts MCP.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Gromox leans on groupware, exchange compatibility and ews, Superhuman focuses on email, team admin and enterprise.
Superhuman and Gromox have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Superhuman trajectory → · Compare Gromox vs Superhuman →
Frequently asked questions
What are the best alternatives to Gromox?
The top Gromox alternatives we currently track in team communication tools are Fonoster, Salesmsg, Rocket.Chat, Twilio, Element X Android, 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.