Add email unsubscribe skill

dotfiles/agents/skills/email-unsubscribe-check/SKILL.md

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+---
+name: email-unsubscribe-check
+description: Use when user wants to find promotional or unwanted recurring emails to unsubscribe from, or when doing periodic inbox hygiene to identify senders worth unsubscribing from
+---
+
+# Email Unsubscribe Check
+
+Scan recent inbox emails to surface promotional, newsletter, and digest senders the user likely wants to unsubscribe from. Actually unsubscribe via browser automation.
+
+## Workflow
+
+```dot
+digraph unsubscribe_check {
+    "Search recent inbox emails" -> "Group by sender domain";
+    "Group by sender domain" -> "Classify each sender";
+    "Classify each sender" -> "Obvious unsubscribe?";
+    "Obvious unsubscribe?" -> "Present to user for confirmation" [label="yes"];
+    "Obvious unsubscribe?" -> "Borderline?" [label="no"];
+    "Borderline?" -> "Ask user" [label="yes"];
+    "Borderline?" -> "Skip" [label="no, personal"];
+    "Present to user for confirmation" -> "User confirms?";
+    "User confirms?" -> "Actually unsubscribe" [label="yes"];
+    "User confirms?" -> "Skip" [label="no"];
+    "Actually unsubscribe" -> "Create Gmail filter";
+    "Create Gmail filter" -> "Retroactively clean old emails";
+}
+```
+
+## How to Scan
+
+1. Search recent emails: `newer_than:7d` (or wider if user requests)
+2. Identify senders that look promotional/automated/digest
+3. Present findings grouped by confidence:
+   - **Clearly unsubscribeable**: marketing, promos, digests user never engages with
+   - **Ask user**: newsletters, community content, event platforms (might be wanted)
+
+## Unsubscribe Execution
+
+For each confirmed sender, do ALL of these:
+
+### 1. Actually unsubscribe via browser (most important step)
+
+Two approaches depending on the sender:
+
+**For emails with unsubscribe links:**
+- Read the email via Gmail MCP to find the unsubscribe URL (usually at bottom of email body)
+- Navigate to the URL with Chrome DevTools MCP
+- Take a snapshot, find the confirmation button/checkbox
+- Click through to complete the unsubscribe
+- Verify the confirmation page
+
+**For services with email settings pages (Nextdoor, LinkedIn, etc.):**
+- Navigate to the service's notification/email settings page
+- Log in using credentials from `pass` if needed
+- Find and disable all email notification toggles
+- Check ALL categories (digests, alerts, promotions, etc.)
+
+### 2. Create Gmail filter as backup
+
+Even after unsubscribing, create a filter to catch stragglers:
+```
+create_filter criteria:{from:"domain.com"} action:{removeLabelIds:["INBOX"]}
+```
+
+### 3. Retroactively clean old emails
+
+Search for old emails from the sender and remove from inbox:
+```
+search_emails query:"from:domain.com" maxResults:50
+batch_modify_emails messageIds:[...] removeLabelIds:["INBOX"]
+```
+
+## Signals That an Email is Unsubscribeable
+
+- "no-reply@" or "newsletter@" sender addresses
+- Marketing subject lines: sales, promotions, "don't miss", digests
+- Bulk senders: Nextdoor, Yelp, LinkedIn digest, social media notifications
+- Community digests the user doesn't engage with
+- Financial marketing (not transactional alerts)
+- "Your weekly/daily/monthly" summaries
+
+## Signals to NOT Auto-Unsubscribe (Ask First)
+
+- Patreon/creator content
+- Event platforms (Luma, Eventbrite, Meetup)
+- Professional communities
+- Services the user actively uses (even if noisy)
+- Transactional emails from wanted services