Element
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Comparison · Comms
Grain vs Mailu
A side-by-side editorial comparison of Grain and Mailu — release velocity, themes, recent moves, and the top alternatives to consider.
Grain vs Mailu: at a glance
| Feature | Grain | Mailu |
|---|---|---|
| Sector | Comms | Comms |
| Velocity score | 2.5 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | meeting-recording, privacy-controls, speaker-identification, mcp-tools | maintenance-branch, roundcube, cve-patching, self-hosted-mail |
| Last editorial update | 1d ago | 1d ago |
| Website | — | Visit → |
What is Grain?
Grain adds consent controls and rule-based privacy as its meeting data reaches more AI tools.
Grain's October release lets workspaces flag meetings as sensitive by rule and skip auto-sharing them, adds recording consent controls, and brings back a mobile beta. It follows August's Voice Signatures, which label speakers by voice so shared-mic and in-person captures attribute correctly. Earlier in the year Grain shipped an MCP server and a ChatGPT integration.
What is Mailu?
Mailu's October: patched PHP for webmail, and a resolver that reports DNS failures
Mailu's 2024.06 branch shipped six pinned releases in October, each tied to a single issue. Three dealt with the resolver: handling the DNSSEC KSK rollover, then making the healthcheck fail on SERVFAIL, re-shipped once. Three were webmail: Roundcube 1.6.20, mitigations for the PHP2Shell CVEs, and then the patched PHP runtime. Late September releases fixed boolean settings that could not be turned off and stale webmail sessions after switching accounts via SSO.
Grain vs Mailu: editorial side-by-side
Grain
2.5COMMS
Grain adds consent controls and rule-based privacy as its meeting data reaches more AI tools.
◆ Current state
Grain's October release lets workspaces flag meetings as sensitive by rule and skip auto-sharing them, adds recording consent controls, and brings back a mobile beta. It follows August's Voice Signatures, which label speakers by voice so shared-mic and in-person captures attribute correctly. Earlier in the year Grain shipped an MCP server and a ChatGPT integration.
◆ Where it's heading
Grain spent the first half of 2026 exposing meeting data to AI assistants, and is now adding the governance that wider exposure needs: consent, sensitivity rules and controlled sharing. Release cadence has slowed to roughly one announcement every month or two.
◆ Prediction
Further admin and privacy controls around what AI tools can read are the likely next step; the entries do not show a timeline for the mobile app leaving beta.
Mailu
5.0COMMS
Mailu's October: patched PHP for webmail, and a resolver that reports DNS failures
◆ Current state
Mailu's 2024.06 branch shipped six pinned releases in October, each tied to a single issue. Three dealt with the resolver: handling the DNSSEC KSK rollover, then making the healthcheck fail on SERVFAIL, re-shipped once. Three were webmail: Roundcube 1.6.20, mitigations for the PHP2Shell CVEs, and then the patched PHP runtime. Late September releases fixed boolean settings that could not be turned off and stale webmail sessions after switching accounts via SSO.
◆ Where it's heading
The project remains in one-fix-per-release maintenance on the 2024.06 line, with upstream webmail and PHP security driving much of the cadence. Nothing in the entries points to a new main release.
◆ Prediction
The next releases will most likely follow upstream Roundcube or PHP security fixes, as three of the last six did.
Alternatives to Grain and Mailu
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 Grain or Mailu.
Synapse
Synapse 1.164 advertises Matrix v1.16 and v1.17 amid a run of dependency security patches
Subsplash
Subsplash gives church staff notes on every person and every Workflow card.
Maddy
maddy's latest release is a security fix, five months after its last feature work.
Converse.js
Converse.js 14.0.1 fixes OMEMO:2 group decryption broken by Chromium 153.
Element iOS
Element Classic now asks its own users to move to Element X, if their server opts in.
Recent activity from Grain and Mailu
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 11d agoMailuMailu ships patched PHP for PHP2Shell CVEs
- 12d agoMailuMailu mitigates PHP2Shell webmail CVEs
- 14d agoMailuMailu 2024.06.65: Roundcube 1.6.20 update
- 19d agoMailu2024.06.64 re-ships the resolver healthcheck fix
- 21d agoMailu2024.06.63 makes the resolver healthcheck catch SERVFAIL
- 22d agoMailu2024.06.62 handles the DNSSEC KSK rollover
- 1mo agoGrainWorkspace Libraries, Recording Consent + Mobile Beta
- 2mo agoGrainVoice Signatures label who spoke, plus better transcription
- 3mo agoGrainGrain in ChatGPT + Smarter Notes and MCP Tools ⚡
- 5mo agoGrainOpt-in meeting notifications, better playlists, and more!
- 5mo agoGrainGrain MCP + Bulk AI Actions and API Updates ⚡
- 7mo agoGrainNew Home Page + Improved Zapier Integration
Frequently asked questions
What is the difference between Grain and Mailu?
They serve adjacent needs but don't currently overlap on shipped themes. Mailu is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 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 Grain better than Mailu?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Mailu is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 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 Grain?
Top Grain alternatives in Comms are ranked by recent ship velocity. Browse the "Grain alternatives" section above for the current picks, or visit /alternatives/grain for the full list with editorial commentary on each.
What are the best alternatives to Mailu?
Top Mailu alternatives in Comms are ranked by recent ship velocity. Browse the "Mailu alternatives" section above for the current picks, or visit /alternatives/mailu for the full list with editorial commentary on each.