Single Grain
Single Grain keeps publishing AI-for-marketing how-tos, not product changes
A side-by-side editorial comparison of Postiz and Sendspark — release velocity, themes, recent moves, and the top alternatives to consider.
Postiz encrypts channel tokens and lets agents hand out channel-connect links
The 13 November release adds opt-in encryption of channel tokens at rest (local key or AWS KMS), connect links that let the public API or an MCP agent send someone a link to add a channel, Amazon SES for email and 20-item Instagram carousels with alt text. It also closes two access-control holes: plain members could call billing routes, and post saves could carry another organization's ids. October's release added preview comments and a self-hosted MCP connector.
Sendspark spent the quarter making recording and editing fast enough to use mid-workflow.
The recent window is concentrated on removing waiting and rework from the capture loop. Chrome extension recordings are shareable the moment the upload finishes rather than after processing — about 10 seconds instead of about five minutes for a three-minute clip — with processing continuing in the background. The editor gained timeline splitting, so a stumble mid-recording can be cut out instead of forcing a re-record, with preview, undo and millisecond readouts. Around those sit AI transcript accuracy work, consistent thumbnail loading across CRM integrations, and in-app feedback, changelog and relocated help docs.
The 13 November release adds opt-in encryption of channel tokens at rest (local key or AWS KMS), connect links that let the public API or an MCP agent send someone a link to add a channel, Amazon SES for email and 20-item Instagram carousels with alt text. It also closes two access-control holes: plain members could call billing routes, and post saves could carry another organization's ids. October's release added preview comments and a self-hosted MCP connector.
Security and agent access now ship together. Each release hardens the self-hosted install while giving MCP agents and the API more of the workflow, from preview links in October to onboarding a client's channel in November.
Expect more MCP and API actions around client onboarding and review, and further access-control audits given two fixes in this release alone.
The recent window is concentrated on removing waiting and rework from the capture loop. Chrome extension recordings are shareable the moment the upload finishes rather than after processing — about 10 seconds instead of about five minutes for a three-minute clip — with processing continuing in the background. The editor gained timeline splitting, so a stumble mid-recording can be cut out instead of forcing a re-record, with preview, undo and millisecond readouts. Around those sit AI transcript accuracy work, consistent thumbnail loading across CRM integrations, and in-app feedback, changelog and relocated help docs.
The product is being tuned for people recording many short videos a day inside a sales workflow, where the cost is not features but the wait between recording and sending. Cutting the post-record delay and making mistakes recoverable both attack the same thing: the tax on recording again. The integration work keeps that loop inside the CRM rather than pulling users into Sendspark.
Expect the editing surface to keep expanding along the same line — more in-editor correction that avoids a re-record — rather than new distribution channels.
Other Marketing 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 Postiz or Sendspark.
Single Grain keeps publishing AI-for-marketing how-tos, not product changes
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See all Postiz alternatives → · See all Sendspark alternatives →
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
They serve adjacent needs but don't currently overlap on shipped themes. Sendspark 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.
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Sendspark 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 Marketing products to evaluate alongside.
Top Postiz alternatives in Marketing are ranked by recent ship velocity. Browse the "Postiz alternatives" section above for the current picks, or visit /alternatives/postiz for the full list with editorial commentary on each.
Top Sendspark alternatives in Marketing are ranked by recent ship velocity. Browse the "Sendspark alternatives" section above for the current picks, or visit /alternatives/sendspark for the full list with editorial commentary on each.