Mail Trigger
A mail trigger watches a mailbox and runs a flow when a message arrives that matches your filters — the usual way to automate "when an invoice lands in this inbox".
Triggers are created in Admin Console → Triggers, with Add Trigger.
1. Trigger Type

Pick the Mail category. It has one trigger, Received:

2. Mailbox and filters
Set which mailbox to watch and which messages count — subject, sender, and how far back to search.
The mailbox credential comes from a vault item, not from fields on this form. Create an Email item in a vault first — see Vaults — and select the vault and item here.
A trigger matching every message will run your flow on every message. Filter on subject or sender so the flow only sees what it is meant to handle.
3. Flow & Details

Name the trigger, then choose the published flow, its version, and the robot that will watch the mailbox.
The robot has to be connected for a trigger to fire.
See also
- Vaults — storing the mailbox credential
- Mail package — reading and sending mail inside the flow
- Triggers — managing existing triggers