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roshanjonah merged 1 commit into from
Jul 16, 2026
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docs(changelog): note attachment upload reliability fix #24

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9 changes: 9 additions & 0 deletions changelog.mdx
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Expand Up @@ -4,6 +4,15 @@ description: "New features, improvements, and fixes across the Sendmux platform.
rss: true
---

<Update label="16 July 2026" tags={["Bug fixes"]} rss={{ title: "Agent attachment uploads are more reliable" }}>
## Bug fixes

AI tool workflows can now upload and download mailbox attachments through hosted MCP without hitting an unintended permission block.

Short-lived Sending API upload links now reject invalid tokens or mismatched upload headers before reading file bytes, keeping delegated uploads safer and more predictable.

</Update>

<Update label="14 July 2026" tags={["Bug fixes"]} rss={{ title: "Inbox thread lists load more reliably" }}>
## Bug fixes

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