Invoice Intake Triage Workflow for Shared Finance Mailboxes

An invoice intake triage workflow controls what happens between arrival in a shared finance mailbox and creation of a candidate payable record. It must preserve the sender and attachment, identify duplicates, isolate suspicious messages, and route business exceptions. Receipt is not approval, and a mailbox label is not evidence that an invoice entered the accounting system.

Preserve the arrival event

For each message, record received time, sender address, subject, message identifier, attachment names, and mailbox location. Assign an intake identifier before renaming files. If the same invoice arrives through a portal and email, link both arrivals to one candidate while retaining both source events.

Do not require intake staff to open unexpected files outside approved security handling. Password protected archives, executable content, unusual links, and apparent supplier impersonation belong in the security route. The original message should remain available according to policy.

Triage lane	Observable condition	Destination
Candidate invoice	Supplier and invoice reference can be read	Validation queue
Possible duplicate	Key fields match an existing candidate	Duplicate review
Supplier unknown	No governed supplier match	Vendor review
Suspicious content	Sender or attachment concern	Security handling
Noninvoice	Statement, reminder, or correspondence	Named mailbox process

Validate identity and minimum fields

Match the supplier against the approved vendor master without changing master data. Capture invoice number, invoice date, currency, gross amount, purchase order or requester, and stated payment details. Missing values become targeted exceptions.

A change in remittance or bank information must leave the invoice lane and enter the organization's independently verified vendor change control. Do not use contact details supplied only in the requesting message. Urgency and senior names in the thread do not waive verification.

The US National Archives records management policy resources provide useful concepts for attributable records and controlled disposition. They do not set a private company's invoice approval requirements, but they reinforce preserving the source message and its context instead of retaining only a detached attachment.

Route without implying approval

Create the candidate record only in the status allowed for intake. Link the source evidence and record the operator. Route purchase order mismatches, missing receipts, tax questions, duplicate candidates, and unrecognized requesters to separate owners. The approver and accounting owner retain their defined decisions.

Reconcile the mailbox for a period using arrivals, candidates created, duplicates linked, security quarantines, noninvoice routes, and unresolved items. Every source message should land in one explainable bucket. This catches invoices hidden in personal folders or marked complete before a system record existed.

Accounts payable assistant support can operate the bounded intake lane. The guide to invoice exception ownership helps assign the cases that should leave routine triage.

Manage the mailbox as a queue

Use coverage windows and named backups so absence does not create an invisible backlog. Sort aging from received time, not from the date an operator first opened the email. Repeated supplier statements may signal an unresolved invoice and should link back to its candidate rather than inflate intake volume.

Sample records from mailbox to payable system and from payable system back to source. Check source identity, duplicate treatment, attachment integrity, supplier match, and status accuracy. Track unread age, unresolved security items, duplicate rate, and exceptions by type. A simple count processed can reward fast misrouting.

Pilot one mailbox with a limited supplier set. Document how common statements, credits, and invoice corrections differ before expanding to more entities or channels.