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Comparison · Comms
Stalwart vs The Events Calendar
A side-by-side editorial comparison of Stalwart and The Events Calendar — release velocity, themes, recent moves, and the top alternatives to consider.
Stalwart vs The Events Calendar: at a glance
What is Stalwart?
Stalwart is chasing mail RFCs and its own storage layer at the same time
Stalwart ships roughly weekly, and the releases divide cleanly between standards implementation and correctness work. v0.16.18 turns toward resource control — bounds on decompressed inbound DMARC and TLS report size, a cap on RocksDB block-cache memory, column families tuned per access pattern, and a queue scheduler that stops rescanning from the earliest pending event. The preceding releases added IMAP UIDONLY, UIDBATCHES and MESSAGELIMIT, plus JMAP email push and VAPID.
What is The Events Calendar?
The Events Calendar runs a disciplined maintenance train across its whole plugin suite.
The Events Calendar is a mature WordPress events and ticketing suite spanning several plugins — the core calendar, Event Tickets, Filter Bar, Community, and Pro add-ons. The recent release stream is almost entirely maintenance: bug fixes, translation updates, accessibility work, and payment-gateway handling for PayPal, Square, and Stripe. Development is spread evenly across the plugin family rather than concentrated in one flagship.
Stalwart vs The Events Calendar: editorial side-by-side
Stalwart
5.0COMMS
Stalwart is chasing mail RFCs and its own storage layer at the same time
◆ Current state
Stalwart ships roughly weekly, and the releases divide cleanly between standards implementation and correctness work. v0.16.18 turns toward resource control — bounds on decompressed inbound DMARC and TLS report size, a cap on RocksDB block-cache memory, column families tuned per access pattern, and a queue scheduler that stops rescanning from the earliest pending event. The preceding releases added IMAP UIDONLY, UIDBATCHES and MESSAGELIMIT, plus JMAP email push and VAPID.
◆ Where it's heading
Two threads run through every release. One is RFC coverage across IMAP, JMAP, CalDAV and WebDAV, implemented close to the specification including drafts. The other is a long tail of protocol-conformance fixes, many of them cases where JMAP and IMAP disagreed about the same state. The newest release adds a third: memory and scheduling limits, which is what a server codebase starts doing when deployments get large enough for defaults to hurt.
◆ Prediction
Expect continued RFC additions across the JMAP and IMAP surfaces, with more of the storage-tuning work that v0.16.18 started as RocksDB deployments scale.
The Events Calendar
0.0COMMS
The Events Calendar runs a disciplined maintenance train across its whole plugin suite.
◆ Current state
The Events Calendar is a mature WordPress events and ticketing suite spanning several plugins — the core calendar, Event Tickets, Filter Bar, Community, and Pro add-ons. The recent release stream is almost entirely maintenance: bug fixes, translation updates, accessibility work, and payment-gateway handling for PayPal, Square, and Stripe. Development is spread evenly across the plugin family rather than concentrated in one flagship.
◆ Where it's heading
This is a product in steady stewardship mode. The releases show a team keeping a large installed base stable — tightening capability checks for security, fixing pagination and view rendering, improving WooCommerce and Elementor compatibility — with no new capability surface in view. Accessibility and payment reliability are recurring focus areas.
◆ Prediction
Expect the same cadence of small, per-plugin maintenance releases to continue, with security hardening and gateway compatibility as the likely themes. Nothing in these entries signals a larger feature push.
Alternatives to Stalwart and The Events Calendar
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 Stalwart or The Events Calendar.
Proton Bridge
Proton Bridge spends its first release in ten weeks on crashes, memory bounds and dead code
Mux
Every manual control Mux ships now arrives with a Robots workflow that does it for you
Netcore Cloud
Netcore's feed remains a demand-generation channel; ten entries, zero product releases.
mailcow
mailcow's release notes are almost entirely upstream security currency.
Openfire
Openfire keeps its XMPP server current without changing what it is.
See all Stalwart alternatives → · See all The Events Calendar alternatives →
Recent activity from Stalwart and The Events Calendar
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoStalwartResource limits arrive for inbound reports and RocksDB caches
- 8d agoStalwartIMAP gains UIDONLY, UIDBATCHES and message-limit extensions
- 16d agoStalwartJMAP delivery push arrives; strict relays stop rejecting calendar mail
- 23d agoStalwartFix-only release: JMAP semantics and a credential escalation
- 29d agoStalwartVAPID lands for JMAP Web Push
- 1mo agoStalwartFreeBSD support, plus OAuth scopes for IMAP, SMTP and Sieve
- 4mo agoThe Events CalendarEvent Tickets 5.27.6.1
- 4mo agoThe Events CalendarThe Events Calendar 6.15.20
- 4mo agoThe Events CalendarThe Events Calendar 6.15.19
- 4mo agoThe Events CalendarEvent Tickets 5.27.6
- 4mo agoThe Events CalendarCommunity 5.0.15
- 4mo agoThe Events CalendarThe Events Calendar 6.15.18
Frequently asked questions
What is the difference between Stalwart and The Events Calendar?
They serve adjacent needs but don't currently overlap on shipped themes. Stalwart is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Stalwart better than The Events Calendar?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Stalwart is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Stalwart?
Top Stalwart alternatives in Comms are ranked by recent ship velocity. Browse the "Stalwart alternatives" section above for the current picks, or visit /alternatives/stalwart for the full list with editorial commentary on each.
What are the best alternatives to The Events Calendar?
Top The Events Calendar alternatives in Comms are ranked by recent ship velocity. Browse the "The Events Calendar alternatives" section above for the current picks, or visit /alternatives/the-events-calendar for the full list with editorial commentary on each.