Sellium for E-commerceSellium for E-commerce:an AI sales agent for your online store
The shopper has the product in sight, but before paying they want to know if their size is in stock, how long shipping takes and whether they can pay in installments. If nobody answers, they leave. Sellium answers on WhatsApp from your real inventory, recommends, builds the order and sends the payment link without them leaving the chat.
How do you sell on WhatsApp for an online store with an AI agent?
You sell by connecting an AI sales agent for WhatsApp to your store platform and your payment methods: the agent answers the questions that stall a purchase (size, color, stock by variant, shipping cost and time, returns, payment methods and installments) with real data from your catalog, recommends alternatives or add-ons, builds the order and sends the payment link in the same conversation. If the shopper stops replying, it picks the inquiry back up while the conversation is still open.
The difference from an FAQ chatbot is that it sells: it understands what the shopper types however they type it, checks stock on the spot and closes. And the difference from an abandoned-cart campaign is the starting point: here the shopper is the one writing, and Sellium handles that conversation. Cart campaigns and repeat purchases belong to Revio.
The full picture of the sector (the five agents of the Vantegrate Suite applied to D2C brands, omnichannel retailers and marketplaces) is on the E-commerce page.
Where the sale gets lost before checkout
What keeps coming up at brands and online stores: the shopper intends to buy, but one unanswered question pushes them out of the funnel.
The question nobody answers in time
Do you have it in a medium? Will it arrive before Friday? Do you take bank transfers? If the answer takes hours, purchase intent cools off and the shopper keeps looking at another store.
Carts that never reach payment
The documented average cart abandonment rate is around 70% (Baymard Institute). Many shoppers leave over a shipping cost that shows up late or doubts about delivery time and payment, exactly what a conversation solves.
A WhatsApp run from someone's phone
Inquiries reach the store's number and whoever is free answers them, with no inventory in view and no record in the CRM. During sales peaks, the chat gets swamped and replies come the next day.
Out of stock, no alternative
When the size or color is gone, the shopper leaves empty-handed because nobody offers the similar style or the add-on that is available.
How Sellium solves it for your online store
The agent's capabilities, mapped to the funnel: each one runs on your catalog, your inventory and your commercial terms, not on canned answers.
Real inventory
Stock by variant, in real time
Checks size, color and style against your store or your ERP and never offers what isn't there. If the shopper sends a photo or a description, it finds the closest product.
Shipping
Shipping and final cost before payment
States the shipping cost and delivery time to the shopper's postal code, or the pickup option, so the total doesn't first appear at checkout.
Recommendations
Recommends alternatives and add-ons
If the size is out, it offers another color or a similar style; once the shopper has chosen, it suggests the add-on that fits, always from your real catalog.
Payment in chat
Builds the order and sends the payment link
Applies current coupons and promotions, builds the order and sends a payment link from Mercado Pago, Stripe or the gateway you already use, with the installment options you offer.
Open inquiries
Picks up inquiries left hanging
If the shopper stops replying, it writes back within the 24 hours WhatsApp allows with whatever they still needed to decide; after that window, only with an approved template.
Your platform
On the platform you already use
Connects through the official APIs of Shopify, VTEX, Tiendanube and WooCommerce, and logs every shopper and every conversation in your CRM.
The sneaker inquiry that comes in on a Thursday at 11:10 PM
The full flow for an apparel store's most common conversation: a shopper who wants to buy but has questions first.
Thursday 11:10 PM
The shopper asks
They saw a pair of sneakers on Instagram and message the store on WhatsApp: whether they come in size 42, whether they'll arrive in Rosario before Saturday and whether they can pay in installments.
11:11 PM
Real stock and shipping
Sellium checks inventory: size 42 is left in white, not black. It states the shipping cost to that postal code and confirms delivery on Friday.
11:12 PM
Alternative and add-on
It shows the white pair and a similar style in black that is available in 42. Once the shopper picks, it suggests the performance socks that sell with that style.
11:14 PM
Order built, payment link sent
It applies the current promotion, builds the order and sends the Mercado Pago link with the available installments. The shopper replies they'll pay in the morning.
Friday 9:40 AM
The inquiry isn't lost
The payment hasn't come through. Sellium writes within the 24-hour window with the link and the order just as it was left; the shopper pays and the order lands in your store, ready to pack.
An inquiry that would have waited overnight, by which time the shopper had already bought elsewhere, ended in a paid order with an add-on, without anyone on the team working the chat. Multiply that by every inquiry that comes in after hours.
Why talk before checkout, by the numbers
Public benchmarks on online shoppers and the channel.
7x
More likely to qualify a lead when contacting it within the first hour than one hour later
24 h
From the shopper's last message to reply without a template; after that, only with an approved template
Public benchmarks, not our own results. Baymard's figure averages dozens of cart abandonment studies; the Harvard Business Review figure measures web leads contacted by phone or email and is used as a reference for response speed; Meta updates its messaging rules several times a year. Every Sellium implementation is measured against a baseline agreed with the customer (after-hours inquiries handled, conversation-to-order conversion, average order value).
Secure AI agents that work with your data
Sellium handles shopper, order and payment data. That's why it runs 100% on Salesforce and Oracle Cloud Infrastructure, with those platforms' SOC 2 Type II and ISO 27001 certifications; payments are processed by the gateway you already use and data stays in your systems. We don't claim anyone else's certifications: Vantegrate enables, the customer operates and certifies.
Frequently asked questions about Sellium for E-commerce
Does Sellium work with Shopify, VTEX, Tiendanube or WooCommerce?
Does Sellium work with Shopify, VTEX, Tiendanube or WooCommerce?
Yes. It connects through each platform's official APIs to check catalog, variants, inventory and orders, and logs the shopper and the conversation in your CRM. If your store runs on another platform, it's assessed during discovery.
Can it take payment inside the conversation?
Can it take payment inside the conversation?
Yes: it builds the order and sends a payment link from Mercado Pago, Stripe or the gateway you already use, with the installment options you offer. When the payment clears, the order is confirmed and the shopper gets the notice in the same chat. How payment collection works is covered in WhatsApp payments.
What if the product they want is out of stock?
What if the product they want is out of stock?
It doesn't sell it anyway. It offers what is available: another size, another color or a similar style from your catalog. If the shopper would rather wait for the restock, it records the interest in the CRM so the restock notice reaches them when the product is back.
How is it different from Revio's cart recovery?
How is it different from Revio's cart recovery?
In who starts the conversation. Sellium handles the shopper who writes in: it answers, recommends, takes payment and picks up the inquiry left open. Revio goes after the shopper who didn't write, with abandoned-cart campaigns, repeat purchases and reactivation of your customer base. They work together: when a shopper replies to a Revio campaign, the conversation passes to Sellium to close the sale.
What happens when the shopper wants to talk to a person?
What happens when the shopper wants to talk to a person?
It transfers them to your team right away, with the full conversation history and the order built as far as it got, so nobody asks them the same thing twice. The handoff rules (complaints, wholesale purchases, high amounts) are defined during implementation.
How much does Sellium cost for an online store?
How much does Sellium cost for an online store?
Sellium is priced in two parts: an initial implementation quoted for each company (discovery, training the agent on your catalog and terms, integrations with your store and payment methods, and adjustments) and a monthly subscription with expandable AI credits, with no lock-in. You pay for WhatsApp messages directly to Meta, on your own account and with no markup from us. For the number for your case, request a quote.
Tonight's inquiry can end in a paid order
Tell us which platform you use, how you take payments and which questions keep coming up on your WhatsApp, and we'll put together a Sellium quote for your store. If you prefer, let's talk on WhatsApp.
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