⚡ Until October 31: 3 months at 50% off any plan. No card. Cancel any time.Get started →
ESEN
ProductSolutionsComparisonsPricingCases
Log inTry free
Module · Purchasing

Purchase proposal that knows what to order.

Cross-references current stock + sales velocity + lead time and tells you what to buy, how much and from which supplier. Purchase orders, partial receipts and history in one place.

Start 14-day free trialTalk to the team
Purchase orders to suppliers in Kumbai: drafts, sent and received
Automated proposal

Every week, a "what should I order" list.

Instead of a spreadsheet, one click and the system builds the proposal cross-referencing your data.

⚙

Suggested quantity

Based on 30-day sales velocity, current stock and trend. Adjustable per SKU before generating the PO.

⏱

Lead time per supplier

Each supplier has its own average lead time. The proposal orders enough to cover until the next reception.

📊

Grouping by supplier

The proposal groups automatically by supplier. From one panel, generate one PO per supplier with a single click.

✏

Manual override

Change the suggested quantity to eye (you know something the system doesn't), remove marginal lines, add unlisted products.

Suppliers

All in one place.

📋

Purchase orders

Editable table, total, supplier data, PDF preview and email sending with attachment. Status: draft → sent → partial receipt → received.

📥

Partial or full receipt

The supplier sends you 80% of the PO now, 20% next week. You receive the partial with a click and stock updates with reason "Receipt".

📚

History per supplier

How much you bought each year, on-time percentage, real average lead time. Data for renegotiating conditions with argument.

📧

PO by email

Send the PO to the supplier's email address with PDF attached. If they accept and reply, the PO stays "Sent" until reception.

Typical workflow

From "we're low" to "stock refilled".

  1. 1

    You launch the automated proposal

    Click "Calculate proposal". We cross-reference stock + 30d sales + trend + lead time. In 2 seconds you see what to buy and to whom.

  2. 2

    You review and adjust

    Change quantities where needed, remove marginal lines, add non-suggested products.

  3. 3

    You generate the POs

    One click: one PO per supplier. Each PO is emailed to the supplier with a PDF attached and moves to "Sent" state.

  4. 4

    Goods arrive

    The supplier confirms lead time. When the delivery note arrives, you receive it (full or partial). Stock increases with reason "Receipt".

  5. 5

    Data for next time

    Real lead time updates. Next Monday's proposal takes what happened into account. The curve refines itself.

PO table with lines, status and total
And inside Kumbai

How it connects with the other modules.

CatalogSupplier per productYou link products to suppliers in the PIM; that fuels the proposal. WarehouseReception with locationReceiving a PO enters stock at its target location with an audited movement. InventoryDays of stock"Days of stock at current pace" feeds decisions on what to order and when. OrdersSales velocity feedOrders history builds sales velocity per SKU, key input for the proposal. Email SMTPYour own serverPOs sent from your own SMTP so replies come to your inbox. REST APIPO endpointsCreate POs via API from your ERP if you use one for accounting.
Module FAQ

The most asked questions about Purchasing.

How accurate is the automatic proposal?
It gets better with time as your history grows. On day 1 it uses conservative assumptions; after 3 months the proposal is very close to what you'd have picked manually.
Can I have multiple suppliers per SKU?
Yes. Each product can have several suppliers with their price and lead time. The proposal picks the best combo by criteria you define.
Do POs go to accounting?
Export to CSV/XLSX for your accounting or ERP. Direct integrations with Holded, Sage, etc. via the REST API.
What happens if the supplier doesn't fulfill the PO?
You close the PO as "Cancelled" or leave it open with delivered lines. Stock only reflects what was actually received.
Can I edit a sent PO?
Only if it's not yet received. Once received (even partial), edits are limited to remaining lines.
Are lead times updated automatically?
Yes. Every reception updates the supplier's real lead time. The next proposal uses the new value.
Do I need to change my online store to use Kumbai?
No. Kumbai connects to your existing store.
What happens to my data if I cancel?
Exportable any time (CSV/JSON). 30 days to download before permanent deletion.
Is it GDPR-compliant?
Yes. EU servers, encryption, DPA signable, granular permissions.
Can I try it before paying?
14 days of the Growth plan free, no card.
Which languages are available?
Panel and emails in English and Spanish, selectable per user.
How does support work?
Chat and email in CET hours, average reply < 4 working hours.

Stop buying by intuition.

14 days of the Growth plan, free. Try the proposal with your real data.

Start 14-day free trialSee all modules