Rspamd
Rspamd 4.3 fixes SPF evaluation order and rejects weak DKIM keys, with results that change.
A side-by-side editorial comparison of Element Android and Slack — release velocity, themes, recent moves, and the top alternatives to consider.
Now 'Element Classic' in maintenance mode, steering users to Element X
Element Android, renamed Element Classic, is in maintenance mode while users are steered to Element X. September's releases set targetSdk to 36, added a migration banner to the room list and updated the banner about excluding insecure devices. Cadence is roughly monthly and limited to compliance, security and migration prompts.
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.
Element Android, renamed Element Classic, is in maintenance mode while users are steered to Element X. September's releases set targetSdk to 36, added a migration banner to the room list and updated the banner about excluding insecure devices. Cadence is roughly monthly and limited to compliance, security and migration prompts.
This is a wind-down branch: the team keeps it secure and compliant (a recent GHSA-tracked file-storage fix, crypto-android and Jitsi bumps) while exposing internal services so Element X can take over. The persistent 'verify this device before October' banners point users toward migration.
Expect continued security-only maintenance and migration prompts rather than new capabilities, with feature investment flowing to Element X. The October verification deadline suggests a hard nudge to move off the Classic client this year.
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.
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.
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.
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 Element Android or Slack.
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See all Element Android alternatives → · See all Slack alternatives →
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
They serve adjacent needs but don't currently overlap on shipped themes. Slack is currently shipping more aggressively (velocity 6.3 vs 0.0), 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.
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Slack is currently shipping more aggressively (velocity 6.3 vs 0.0), 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.
Top Element Android alternatives in Comms are ranked by recent ship velocity. Browse the "Element Android alternatives" section above for the current picks, or visit /alternatives/element-android for the full list with editorial commentary on each.
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.