COMMS
Fonoster now cleans up deleted workspaces and stops exposing stored secrets.
Alternatives · team communication tools
Rspamd alternatives
The best Rspamd alternatives in team communication tools, ranked by Sparkpulse's velocity_score.
Updated Nov 14, 2026
Looking for the best alternatives to Rspamd? 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, Rspamd shipped 0 meaningful updates in the last 30 days and carries a velocity score of 5.0 out of 10 in 2026. The alternatives below are ranked the same way, so you're comparing real release momentum, not marketing claims.
About Rspamd
Rspamd 4.3 fixes SPF evaluation order and rejects weak DKIM keys, with results that change.
Rspamd 4.3.0 on November 13 is a correctness release with a long incompatible-changes list. SPF records are now evaluated in term order, closing a case where an explicit -ip4 deny could be overridden by a broader allow. DKIM rejects RSA keys under 1024 bits and signatures with duplicate tags, DMARC no longer drops a policy over an unknown tag, URL mismatches are scored apart from phishing, and PDF text extraction and archive unpacking change their output. Critical fixes cover a header line that could abort a worker from one unauthenticated HTTP request.
Velocity 5.0 · Last update 2h ago
Top 12 alternatives to Rspamd
Ranked by recent ship velocity. Tap any card for the full editorial breakdown, or pivot to a head-to-head.
SUPPORT
Twilio's voice AI stops cutting callers off mid-sentence, using its own turn-taking model.
COMMS
Salesmsg adds call-back requests and a one-click Emergency Stop for all outbound texts.
COMMS
Slack now hosts any A2A agent without Slack-specific code.
COMMS
Rocket.Chat 9.0 reaches rc.8 with a migration fix as candidates shrink to single patches.
COMMS
Element 1.12.35 follows the call picture-in-picture release with one desktop storage fix.
COMMS
Krisp moves call transcripts and live captions to cloud transcription in KrispCX 2.84.4.
COMMS
Misskey 2026.11 ships: a leaner start script, and Node.js 22 no longer boots.
COMMS
SlickText's feed is all SMS buying guides; no product release has surfaced since RCS.
COMMS
Session ships new app versions and node upgrades while Pro stays on hold.
COMMS
Signal Desktop's 8.36 beta adds favorite sticker packs after a fix-only week.
COMMS
Superhuman's MCP now lets Claude and ChatGPT attach files, set reminders and share threads.
Rspamd 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 |
|---|---|---|---|---|
| Rspamd (baseline) | 5.0 | 0 | spam filteringemail authenticationinput hardening | — |
| Fonoster | 7.5 | 0 | programmable-voicevoice-aibilling | — |
| Twilio | 6.3 | 1 | voice-aimessagingcaller trust | General Availability: Smart Turn Detection for Conversation Relay |
| Salesmsg | 6.3 | 1 | business-textingai-agentscalling | Sherpa AI sends messages and builds broadcasts on request |
| Slack | 6.3 | 1 | agentsa2amcp | Bring your A2A agents to Slack |
| Rocket.Chat | 6.3 | 0 | team-chatlicensingself-hosted | — |
| Element | 5.0 | 0 | encryptionrecovery-keysmodule-api | — |
| Krisp | 5.0 | 0 | call-center-aitranscriptionvoice-translation | — |
| Misskey | 5.0 | 0 | fediverseself-hostingmemory usage | — |
| SlickText | 5.0 | 0 | smscontent-seopricing | — |
| Session | 5.0 | 0 | private messagingpost-quantumsession pro | — |
| Signal Desktop | 5.0 | 0 | beta-channelmobile-parityinbox-organization | — |
| Superhuman | 5.0 | 0 | emailmcpai assistant | — |
The 12 best Rspamd alternatives, in depth
1. Fonoster · velocity 7.5
Fonoster now cleans up deleted workspaces and stops exposing stored secrets.
Its velocity score of 7.5/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Fonoster focuses on programmable voice, voice ai and billing.
Fonoster and Rspamd have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
2. Twilio · velocity 6.3
Twilio's voice AI stops cutting callers off mid-sentence, using its own turn-taking model.
Over the last 30 days Twilio shipped 1 meaningful update vs Rspamd's 0, most recently “General Availability: Smart Turn Detection for Conversation Relay”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Twilio focuses on voice ai, messaging and caller trust.
Over the last 30 days Twilio has been shipping faster than Rspamd — a point in its favour if release momentum matters to you.
3. Salesmsg · velocity 6.3
Salesmsg adds call-back requests and a one-click Emergency Stop for all outbound texts.
Over the last 30 days Salesmsg shipped 1 meaningful update vs Rspamd'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 Rspamd leans on spam filtering, email authentication and input hardening, Salesmsg focuses on business texting, ai agents and calling.
Over the last 30 days Salesmsg has been shipping faster than Rspamd — a point in its favour if release momentum matters to you.
4. Slack · velocity 6.3
Slack now hosts any A2A agent without Slack-specific code.
Over the last 30 days Slack shipped 1 meaningful update vs Rspamd's 0, most recently “Bring your A2A agents to Slack”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Slack focuses on agents, a2a and mcp.
Over the last 30 days Slack has been shipping faster than Rspamd — a point in its favour if release momentum matters to you.
5. Rocket.Chat · velocity 6.3
Rocket.Chat 9.0 reaches rc.8 with a migration fix as candidates shrink to single patches.
Its velocity score of 6.3/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Rocket.Chat focuses on team chat, licensing and self hosted.
Rocket.Chat and Rspamd 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 Rspamd vs Rocket.Chat →
6. Element · velocity 5.0
Element 1.12.35 follows the call picture-in-picture release with one desktop storage fix.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Element focuses on encryption, recovery keys and module api.
Element and Rspamd have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
7. Krisp · velocity 5.0
Krisp moves call transcripts and live captions to cloud transcription in KrispCX 2.84.4.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Krisp focuses on call center ai, transcription and voice translation.
Krisp and Rspamd have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
8. Misskey · velocity 5.0
Misskey 2026.11 ships: a leaner start script, and Node.js 22 no longer boots.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Misskey focuses on fediverse, self hosting and memory usage.
Misskey and Rspamd have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
9. SlickText · velocity 5.0
SlickText's feed is all SMS buying guides; no product release has surfaced since RCS.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, SlickText focuses on sms, content seo and pricing.
SlickText and Rspamd have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
10. Session · velocity 5.0
Session ships new app versions and node upgrades while Pro stays on hold.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Session focuses on private messaging, post quantum and session pro.
Session and Rspamd have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
11. Signal Desktop · velocity 5.0
Signal Desktop's 8.36 beta adds favorite sticker packs after a fix-only week.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Signal Desktop focuses on beta channel, mobile parity and inbox organization.
Signal Desktop and Rspamd 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 Rspamd vs Signal Desktop →
12. Superhuman · velocity 5.0
Superhuman's MCP now lets Claude and ChatGPT attach files, set reminders and share threads.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Rspamd leans on spam filtering, email authentication and input hardening, Superhuman focuses on email, mcp and ai assistant.
Superhuman and Rspamd 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 Rspamd vs Superhuman →
Frequently asked questions
What are the best alternatives to Rspamd?
The top Rspamd alternatives we currently track in team communication tools are Fonoster, Twilio, Salesmsg, Slack, Rocket.Chat, ranked by recent ship velocity.
How is this list of Rspamd alternatives ranked?
Alternatives are ranked by Sparkpulse's velocity_score — release cadence + 30-day spark count + sector-relative ship rate.
Can I compare Rspamd directly with one of these alternatives?
Yes — every card has a "Compare with Rspamd" link to a side-by-side /compare page.