Check supplier invoices for duplicates and missing GST

Community report: supplier invoices land in a shared inbox, an AP tool captures the invoice data, and an agent compares each one with prior transactions to spot duplicates, wrong amounts, and missing GST. The poster connected the workflow with nexos.ai, said setup for the anomaly-checking agent took about 20 minutes, and still does the final review and approval manually. The poster said this saves a surprising amount of time each month and now produces a weekly summary, shifting their time from data entry to review.

Agent or tool: Custom agent
Topic: Email & Inbox
Reported on: Reddit
Added: 2026-10-15

Why it matters

Email is where a lot of admin quietly piles up. An agent that can read, sort, draft and follow up turns an inbox from a to-do list into something closer to a summary. It is one of 112 sightings filed under Email & Inbox on Agent Sightings (number 19 by interest), and one of 266 involving Custom agent.

How you could try it

Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into your own agent or any similar agent and adjust the details to your situation.

Go through my mail for this goal: check supplier invoices for duplicates and missing GST. Propose labels, drafts, and unsubscribes as a checklist; change nothing until I approve.

Saved

Tip: Start with read-only access or 'draft, don't send', and check a few drafts before trusting it to send anything.

Source

Read the original first-hand account on Reddit: https://www.reddit.com/r/ukaccounting/comments/1srfaqy/best_ai_for_accounting_m…. Our summary is a paraphrase; details are in the source.

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