Rspamd
Rspamd 4.3 fixes SPF evaluation order and rejects weak DKIM keys, with results that change.
Comparison · Comms
Heymarket vs Slack
A side-by-side editorial comparison of Heymarket and Slack — release velocity, themes, recent moves, and the top alternatives to consider.
Heymarket vs Slack: at a glance
What is Heymarket?
Heymarket's feed argues for conversational AI without confirming it ships any.
Seven entries, all explainer content: conversational AI in retail, multilingual support, chatbot versus conversational AI, AI data enrichment, RCS versus SMS, and shared inboxes. Bodies are truncated after roughly two sentences, so each entry gives a scenario and a promise with the substance behind a link. Nothing here is a release note.
What is Slack?
Slack now hosts any A2A agent without Slack-specific code.
Slack's developer channel is almost all agent plumbing. On 10 November Slack became an A2A (Agent2Agent) client: a team hosts its own agent, publishes an Agent Card, and Slack calls it when people talk to it, with no request URL, event handling or Slack-specific logic. This follows Slackbot skills managed through Web API methods, a Slack CLI that points coding agents to the Slack MCP server, and a new requirement that Work Objects embeds allow the slack-mcps.com frame ancestor.
Heymarket vs Slack: editorial side-by-side
Heymarket
5.0COMMS
Heymarket's feed argues for conversational AI without confirming it ships any.
◆ Current state
Seven entries, all explainer content: conversational AI in retail, multilingual support, chatbot versus conversational AI, AI data enrichment, RCS versus SMS, and shared inboxes. Bodies are truncated after roughly two sentences, so each entry gives a scenario and a promise with the substance behind a link. Nothing here is a release note.
◆ Where it's heading
The topic mix has shifted decisively toward AI handling inbound messages rather than routing them to people — repetitive retail questions, languages the team doesn't speak, after-hours requests. That is a clear statement of where Heymarket wants to compete in business messaging. Whether its own product does these things, or the posts are describing the category, cannot be resolved from these entries.
◆ Prediction
Expect the AI-support content to continue and RCS coverage to expand as carrier support broadens. A claim about Heymarket's actual capabilities would need the full articles, which this feed truncates.
Slack
6.3COMMSCOLLAB
Slack now hosts any A2A agent without Slack-specific code.
◆ Current state
Slack's developer channel is almost all agent plumbing. On 10 November Slack became an A2A (Agent2Agent) client: a team hosts its own agent, publishes an Agent Card, and Slack calls it when people talk to it, with no request URL, event handling or Slack-specific logic. This follows Slackbot skills managed through Web API methods, a Slack CLI that points coding agents to the Slack MCP server, and a new requirement that Work Objects embeds allow the slack-mcps.com frame ancestor.
◆ Where it's heading
Slack is lowering the cost of putting outside agents in front of its users: first skills as code, then MCP pointers for coding agents, now a standard protocol in place of the Slack app model for agents. The platform is positioning itself as the place where agents built anywhere meet the people who use them.
◆ Prediction
Expect more A2A follow-ups, such as agents appearing in Slackbot or skills surfaces and richer Agent Card features, given how fast the agent releases have stacked up since October.
Alternatives to Heymarket and Slack
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 Heymarket or Slack.
Twilio
Twilio's voice AI stops cutting callers off mid-sentence, using its own turn-taking model.
Salesmsg
Salesmsg adds call-back requests and a one-click Emergency Stop for all outbound texts.
Element
Element 1.12.35 follows the call picture-in-picture release with one desktop storage fix.
Krisp
Krisp moves call transcripts and live captions to cloud transcription in KrispCX 2.84.4.
Misskey
Misskey 2026.11 ships: a leaner start script, and Node.js 22 no longer boots.
See all Heymarket alternatives → · See all Slack alternatives →
Recent activity from Heymarket and Slack
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoSlackBring your A2A agents to Slack ⚡
- 8d agoSlackWork Objects embeds require the slack-mcps.com frame ancestor
- 10d agoSlackSlack CLI 4.13 tells coding agents about Slack MCP and Skills
- 10d agoSlackSlack Skills Plugin installs in Claude Code from its own marketplace
- 12d agoSlackUpdated low-usage submission criteria for Slack Marketplace apps
- 15d agoSlackSlack CLI 4.12.0, the fourth CLI release in October
- 2mo agoHeymarketHow to use conversational AI in retail
- 2mo agoHeymarketHow to use AI for multilingual customer support
- 2mo agoHeymarketWhat is a chatbot vs. conversational AI?
- 2mo agoHeymarketWhat is AI data enrichment?
- 3mo agoHeymarketConversational AI for customer service: How it works, benefits & use cases
- 3mo agoHeymarketWhat is RCS vs. SMS messaging for business?
Frequently asked questions
What is the difference between Heymarket and Slack?
They serve adjacent needs but don't currently overlap on shipped themes. Slack is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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.
Is Heymarket better than Slack?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Slack is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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.
What are the best alternatives to Heymarket?
Top Heymarket alternatives in Comms are ranked by recent ship velocity. Browse the "Heymarket alternatives" section above for the current picks, or visit /alternatives/heymarket for the full list with editorial commentary on each.
What are the best alternatives to Slack?
Top Slack alternatives in Comms are ranked by recent ship velocity. Browse the "Slack alternatives" section above for the current picks, or visit /alternatives/slack for the full list with editorial commentary on each.