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Email triggers fire when an email matches a condition you define in plain English. The AI evaluates every incoming and outgoing email against your triggers and executes the action — drafting a reply, forwarding, sending an iMessage alert, or anything else the agent can do.

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Anatomy of a Trigger

Every email trigger has two parts:
  1. Condition — natural language description of which emails match (e.g., “receipts and payment confirmations,” “emails where someone asks me for a reference”)
  2. Action — what the agent does on match (e.g., “forward to receipts@expensify.com,” “message me on iMessage with a preview”)
Conditions use AI understanding, not keyword matching. “Emails about legal matters” matches contracts, litigation, compliance, and NDAs even if “legal” never appears.
Email trigger showing condition and action in Settings

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Creating a Trigger

1

Open the agent sidebar

Press p a or Cmd+Shift+L.
2

Describe the automation

Example: “Create an email trigger: when I receive an email from @sequoia.com, message me on iMessage with a preview.”
3

Confirm

The agent shows the condition and action for review.
4

Manage in Settings

Find it in Settings > Automations to toggle, edit, or delete.

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One-Time vs. Repeating

ModeBehaviorUse Case
RepeatingFires every match, stays active indefinitelyReceipt forwarding, VIP alerts
One-timeFires once, then auto-disables”Let me know when Sarah replies to my proposal”
Triggers default to repeating. Say “create a one-time trigger” to get single-fire behavior.

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Open Triggers

Open triggers fire when a tracked email you sent is opened by the recipient.
  1. You send an email with tracking enabled (on by default)
  2. Recipient opens it — tracking pixel notifies Slashy
  3. If an open trigger matches, the agent executes the action
Slashy filters out automated opens (Gmail Image Proxy, Apple Mail Privacy Protection, Microsoft SafeLinks) so you only get alerts on real human opens.
Open trigger with first-open-only indicator

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Smart Sent-Email Filtering

Triggers fire on outgoing emails from real email clients (Gmail, Slashy, Superhuman, Shortwave) but not from mass mailer tools (Apollo, Outreach). This prevents triggers from firing hundreds of times during batch campaigns.

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Automatic Memory Extraction

A hidden system trigger runs on every incoming email, extracting useful information — contact job changes, commitments, meeting reschedules — and storing it as memories. Review in Settings > Memories.

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Managing Triggers

All triggers appear in Settings > Automations (Cmd+, then Automations). Toggle on/off, delete, or view details. You can also manage conversationally: “list my email triggers” or “disable the receipt forwarding trigger.”

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