Rspamd
Rspamd 4.3 fixes SPF evaluation order and rejects weak DKIM keys, with results that change.
Comparison · Comms
Stalwart vs SlickText
A side-by-side editorial comparison of Stalwart and SlickText — release velocity, themes, recent moves, and the top alternatives to consider.
Stalwart vs SlickText: at a glance
What is Stalwart?
Stalwart's weekly releases have turned from new standards to correctness fixes.
Stalwart's releases since v0.16.20 are dominated by long Fixed lists across IMAP, JMAP, MTA, DMARC and iTIP. Additions have been small: a PowerDNS provider in 0.16.24, sd_notify and JMAP mailbox behavior in 0.16.26. The most consequential repair is a RocksDB bug in 0.16.26 that rewrote every stored blob on each compaction of the blobs column family, about once per 128MB of new mail.
What is SlickText?
SlickText's feed is all SMS buying guides; no product release has surfaced since RCS.
SlickText's recent feed is entirely search content: SMS segmentation, church and nonprofit texting comparisons, Black Friday tactics, cost breakdowns and guides on annual plans. No release appears in the entries since the basic RCS addition.
Stalwart vs SlickText: editorial side-by-side
Stalwart
5.0COMMS
Stalwart's weekly releases have turned from new standards to correctness fixes.
◆ Current state
Stalwart's releases since v0.16.20 are dominated by long Fixed lists across IMAP, JMAP, MTA, DMARC and iTIP. Additions have been small: a PowerDNS provider in 0.16.24, sd_notify and JMAP mailbox behavior in 0.16.26. The most consequential repair is a RocksDB bug in 0.16.26 that rewrote every stored blob on each compaction of the blobs column family, about once per 128MB of new mail.
◆ Where it's heading
After the SCIM v2 release in August, the project has shifted from extending coverage to making existing coverage hold up under real use. The bug reports now describe specific interoperability cases, such as Apple Calendar duplicates and DMARC report formatting, which suggests production traffic is driving the queue. The weekly cadence itself has not changed.
◆ Prediction
Expect more weekly fix releases on the same pattern. The entries show no sign of the next major capability, so its timing is unclear.
SlickText
5.0COMMS
SlickText's feed is all SMS buying guides; no product release has surfaced since RCS.
◆ Current state
SlickText's recent feed is entirely search content: SMS segmentation, church and nonprofit texting comparisons, Black Friday tactics, cost breakdowns and guides on annual plans. No release appears in the entries since the basic RCS addition.
◆ Where it's heading
The content is getting more explicit about buying decisions. Vertical comparison pages, published prices and an outgrown-your-platform pitch all aim at people ready to switch. Product motion cannot be read from these posts.
◆ Prediction
Expect Black Friday content through November and more vertical comparison pages. These entries give no evidence of how RCS is progressing.
Alternatives to Stalwart and SlickText
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 SlickText.
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 Stalwart alternatives → · See all SlickText alternatives →
Recent activity from Stalwart and SlickText
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoSlickTextSMS Segmentation: How to Send More Relevant Text Messages
- 22d agoSlickTextWho Should Choose an Annual SMS Marketing Plan? 7 Examples
- 26d agoStalwartv0.16.27: IMAP SEARCH RETURN and iTIP time zone fixes
- 28d agoSlickText5 Best Church Texting Services (Compared)
- 1mo agoStalwartv0.16.26 fixes RocksDB rewriting every blob on compaction
- 1mo agoSlickTextBlack Friday SMS Marketing: 7 Tactics for Before, During, and After the Sale
- 1mo agoStalwartv0.16.25: JMAP MaskedEmail and Autodiscover fixes
- 1mo agoStalwartv0.16.24: PowerDNS provider and phishing list matching fix
- 1mo agoSlickTextHow Much Does SMS Marketing Cost? Real Monthly Budgets
- 1mo agoStalwartv0.16.23: nested list delivery and lost DSN fixes
- 1mo agoSlickTextSMS Automation for Small Business: 8 Examples to Get You Started
- 2mo agoStalwartv0.16.22: STARTTLS session reset and DMARC result fixes
Frequently asked questions
What is the difference between Stalwart and SlickText?
They serve adjacent needs but don't currently overlap on shipped themes. Stalwart and SlickText are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Stalwart better than SlickText?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Stalwart and SlickText are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). 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 SlickText?
Top SlickText alternatives in Comms are ranked by recent ship velocity. Browse the "SlickText alternatives" section above for the current picks, or visit /alternatives/slicktext for the full list with editorial commentary on each.