Automate Timesheet to Invoice Conversion with OpenAI, Gmail & Google Workspace — n8n Workflow

Hoch Komplexität⚡ Auslöser40 Knoten🏷️ Invoice Processingvon DIGITAL BIZ TECH

Übersicht

This workflow converts emailed timesheets into structured invoice rows in Google Sheets and stores them in the correct Google Drive folder structure.

It:

Listens to Gmail for timesheet attachments
Runs OCR and AI parsing
Looks up Customer and PO data from a Google Sheet
Organizes files in Client → Employee → Year folders
Reuses an existing invoice sheet or creates a new one and writes the invoice row

Quick Implementation Steps

Import the workflow JSON into your n8n instance.
Set

Verwendete Knoten

Google SheetsHTTP RequestGoogle DriveCodeOpenAI

Workflow-Vorschau

OCR extraction
Sends each attachment to the OCR API and returns plain
Build invoice dates
Calculates the invoice date and due date using the time
create new year folder
Create invoice sheet
Generates the sheet name, creates a new Google Sheet, u
Write invoice row
Initializes the row structure, maps customer and timesh
Decide reuse or create sheet
Checks the merged search results. If a matching sheet e
Email intake and loop
Listens to Gmail for unread timesheet emails, splits al
Timesheet to Invoice Automation
How it works
The workflow automates converting emailed timesheets in
1. Email intake
Pulls unread Gmail messages with timesheet att
Customer and PO lookup
Looks up the sender in the Customer POs sheet and pulls
AI timesheet parsing
OpenAI reads the timesheet text and extracts employee n
Client folder discovery
Search Client Invoices folder, finds or creates the cli
## File naming and search
searches Drive for existing sheets with the employee a
Create new
create new client name, employee and year named folder
Build file names and search
Generates start based and end based file names from emp
Create invoice sheet
Generates the sheet name, creates a new Google Sheet, u
Write invoice row
append invoice rows
For new sheets, creates the sheet, sets timezone, moves
⚡
G
Gmail Trigger
Split Binary Attachments
L
Loop: Process Each Attac…
Extract Timesheet Data (…
Get Customer Info From P…
S
Set Invoice Date & Due D…
G
Generate Sheet Name (Emp…
S
Set: Invoice Range
I
If: File Already Exists?
If: Invoice Range is 15…
S
Set: File Name from Star…
Merge: Combine Folder S…
Create New Sheet
Move Created Sheet to Fi…
Set: Row Data
Sheets: Append Row
Sheets: Final Append
Sheets: Create Sheet
Sheets: Append Row1
Extract Text from Attach…
Search: Client Invoices …
Search: Client Folder by…
Search: File By Start Da…
Search: File By End Date…
Drive: Move Sheet To Fin…
S
Set: Empty Row Structure
S
Set: Spreadsheet (ID & …
Append: Final Row to Exi…
C
Check if Year Folder Exi…
Create Client Name Folder
C
Check Client Name Folder
Search: Employee Name Fo…
C
Check Employee Name Folder
Create Employee Name Fol…
Search: Year Folder
Create Year Folder
Create Current Year Folder
S
Set Timesheet JSON Fields
HTTP Request(new sheet)
HTTP Request1(create she…
40 nodes46 edges

So funktioniert es

  1. 1

    Auslöser

    Der Workflow startet mit einem auslöser-Auslöser.

  2. 2

    Verarbeitung

    Die Daten fließen durch 40 Knoten, connecting code, gmailtrigger, googledrive.

  3. 3

    Ausgabe

    Der Workflow schließt seine Automatisierung ab und liefert das Ergebnis an das konfigurierte Ziel.

Knotendetails (40)

GO

Google Sheets

googleSheets

#1
HT

HTTP Request

httpRequest

#2
GO

Google Drive

googleDrive

#3
CO

Code

code

#4
OP

OpenAI

n8n-nodes-langchain.openAi

#5

So importieren Sie diesen Workflow

  1. 1Klicken Sie rechts auf die Schaltfläche JSON herunterladen, um die Workflow-Datei zu speichern.
  2. 2Öffnen Sie Ihre n8n-Instanz. Gehen Sie zu Workflows → Neu → Aus Datei importieren.
  3. 3Wählen Sie die heruntergeladene Datei automate-timesheet-to-invoice-conversion-with-openai-gmail-google-workspace und klicken Sie auf Importieren.
  4. 4Richten Sie Anmeldedaten für jeden Dienstknoten ein (API-Schlüssel, OAuth usw.).
  5. 5Klicken Sie auf Workflow testen, um zu überprüfen, ob alles funktioniert, und aktivieren Sie es dann.

Oder direkt in n8n → Aus JSON importieren einfügen:

{ "name": "Automate Timesheet to Invoice Conversion with OpenAI, Gmail & Google Workspace", "nodes": [...], ...}

Integrationen

codegmailtriggergoogledrivegooglesheetshttprequestifmergeopenaisetsplitinbatches

Diesen Workflow holen

Herunterladen und mit einem Klick importieren

JSON herunterladenAuf n8n.io ansehen
Knoten40
Komplexitäthigh
Auslösertrigger
KategorieInvoice Processing

Erstellt von

DIGITAL BIZ TECH

DIGITAL BIZ TECH

@dbt

Tags

codegmailtriggergoogledrivegooglesheetshttprequestifmergeopenaisetsplitinbatches
⚡

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