synter/outbound-replies
Triage and answer replies to cold email campaigns in Synter Outbound — separate real humans from auto-responders, classify intent, draft a reply in the sender's voice, and route opt-outs to suppression. Use when a user asks about outbound replies, their unibox, who responded to a campaign, or wants to answer a prospect.
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Low-risk findings worth noting
W011: Third-party content exposure detected (indirect prompt injection risk).
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
The required workflow reads prospect replies from the Synter Outbound unibox via `outbound_reply_queue`, and any outsider who receives or replies to a cold email can place free text into that inbox without the agent selecting a specific item.
Where we found it
Synter Outbound unibox replies via outbound_reply_queue
content-type · 1 site
The plugin instructs the agent to use `outbound_reply_queue` to fetch and process prospect replies from the Synter Outbound unibox, which contains free-text responses from outsiders (cold email recipients) that could carry prompt-injection payloads.
SKILL.md
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Use `outbound_reply_queue` to inspect pending replies and drafts
- Audited
- Security analysis