How an AI assistant works that replies for you on Vinted
An AI assistant that replies to your Vinted buyers for you sounds magical. In reality, it's a precise mechanism. I'll walk you through, step by step, how it understands messages, how it replies, how it avoids being detected — and why we ended up building it at Bleam.
Indice · 12 sezioni
The story behind this assistant
I've been selling on Vinted for 7 years. A few years ago, I remember an evening I spent with friends where, every 5 minutes, I was unlocking my phone to reply to a Vinted message. A size question, a buyer offering €15 instead of €20, a worn photo request. I'd apologize, reply quickly, then plug back into the conversation with my friends. Except I wasn't really in the evening anymore.
At some point I stopped and thought: "this is ridiculous, I'm spending my evening on my phone while 90% of these messages are the same questions." That's where the idea of Bleam's AI assistant came from. Not from a strategic reflection — from something very concrete: giving Vinted sellers back their evenings, their weekends, their nights.
Today, the Assistant has handled hundreds of thousands of real conversations, Bleam is installed by more than 10,000 sellers, and the Assistant runs for our Business subscribers. In this guide, I'll explain exactly how it works — how it reads a message, how it decides on a reply, how it avoids being flagged as a robot, and what it categorically refuses to do.
The problem an AI assistant actually solves
An active Vinted seller easily gets 30 to 100 messages a day. "Still available?", "what size is it?", "when do you ship?", "worn photo?", "I offer €12". Replying to all that takes time — real time. Not 2 minutes, more like 1 to 2 cumulative hours a day if you do it seriously.
And the worst part is that most of these messages need a fast reply. Not within the day, not within the hour — within minutes. Because a Vinted buyer has 50 tabs open, talks to 5 different sellers, and buys from the one who replies first. It's that mechanical.
What an AI assistant concretely does
Many people picture an AI assistant as "a robot that copy-pastes the same reply every time." It's the opposite. Here are the 6 things a good AI assistant actually does on Vinted.
Answer frequent questions
Size, material, measurements, authenticity, condition, shipping days, availability. The assistant pulls the right info from your listing + your seller preferences, and replies like you would.
Negotiate offers
When a buyer offers a price, the assistant calculates based on your rules and replies: accept, counter, or refuse. It also handles multi-step negotiation, not just a single counter-offer.
Send worn photos on request
If the buyer asks for a worn photo, the assistant can generate one automatically from your product pictures and send it directly in the conversation.
Handle bundles (multiple items)
When a buyer wants several items, the assistant applies a margin bonus that reflects a real commercial gesture — no manual calculation needed.
Follow up buyers 24h later
If a buyer didn't reply to your message, the assistant sends a follow-up 24h later. Statistically the best window to recover a sale that was about to be lost.
Reply in the language you choose
You choose the reply language from Bleam's 10 (French, English, German, Spanish, Italian, Portuguese, Dutch, Polish, Swedish, Danish): handy for selling on Vinted in Germany, Spain or Italy.
How it understands the buyer's message
The first step, when a new message arrives, is to understand what the buyer wants. It's called "intent detection". Concretely, the assistant classifies the message into a category. Here are the main ones it detects:
- Price offer: "I offer €15", "can you come down to €20?", "is €18 possible?". The assistant detects an offer and switches into negotiation mode.
- Size / measurements question: "How does it fit?", "what are the exact measurements?", "would it fit a 40?". The assistant returns listing info or asks for clarification.
- Worn photo request: "Do you have a worn photo?", "what does it look like on?". The assistant can generate and send a photo automatically.
- Shipping question: "When do you ship?", "is it via Mondial Relay?", "how many days?". The assistant replies based on your configured shipping rules.
- Authenticity or condition question: "Is it authentic?", "is the condition good?", "any flaws?". The assistant confirms based on the listing description, never making things up.
- Greeting or vague message: "Hi", "still available?", "interested". The assistant replies politely and re-engages the conversation to understand what the buyer wants.
This classification happens in under a second. And once it's done, the assistant knows exactly what type of reply to generate, with which information.
How it writes a reply that sounds like you
Detecting intent is 30% of the job. Writing a reply that doesn't sound like a robot is the remaining 70%. Here are the parameters the assistant factors in for every message.
- The item description: The assistant reads your listing in full: brand, size, condition, material, measurements if provided. It'll never say "it's cotton" if you wrote "polyester".
- Your seller preferences: Shipping days ("I ship on Saturdays"), return policy, preferred shipping method, tone (casual/formal), sign-off. All configured once, and the assistant respects these rules on every message.
- Conversation history: If the buyer already told you their name, the assistant uses it. If you already negotiated at €18 and the buyer comes back, it remembers. No repetition, no flat replies.
- The reply language: You pick once the language the assistant replies in, from 10: it sticks to it in all your conversations, without you having to think about it.
- Your tone and habits: Are you the cool relaxed type? More professional and measured? The assistant adapts the register. At Bleam, you pick a personality (young, mom, pro, adaptive) that shapes the tone of replies.
How it avoids being detected as a robot
A buyer who senses they're talking to a robot closes the conversation. A serious AI assistant bakes in many small details so it feels human, even after 10 messages.
Natural response delays
The assistant doesn't reply in 0.3 seconds. It waits anywhere from a few seconds to a few minutes, like a human checking their phone. Sounds obvious, but many tools skip this detail.
Random pauses across conversations
If you have 15 pending messages, the assistant doesn't burst through all of them. It spreads them out in time so it looks like a human handling conversations one by one.
Phrasing variations
The assistant never replies exactly the same thing twice. Even for the same question, it varies words, phrasing, punctuation. Avoids the "it's always the same copy-paste" pattern.
Typos and Vinted-style writing
Vinted sellers don't write like sales execs. They use short forms, casual punctuation, sometimes emojis. The assistant reproduces this natural style, not stiff business writing.
Across the 10,000+ pro sellers using Bleam daily, we've never had a buyer feedback where they guessed they were talking to an AI. That's the real test.
What it won't (and will never) do
A serious AI assistant has very clear limits. That's actually what separates a tool you can use with peace of mind from something that'll eventually get you in trouble. Here's what the Bleam Assistant categorically refuses to do.
- It never invents information about the item: If you didn't specify the material, the assistant won't guess it. If you didn't provide exact measurements, it won't invent them. It simply says it doesn't have the info.
- It never promises what you can't deliver: If you configured "I ship on Saturdays", the assistant will never promise shipping tomorrow. If you don't accept returns, it won't say otherwise. Your rules are the source of truth.
- It never goes below your floor price: The minimum price you configured is untouchable. Even if a buyer pushes 10 times, the assistant won't go below. That's your safeguard.
- It alerts you when it doesn't know how to reply: If it hits a message it doesn't understand or that falls outside its scope (very specific question, unusual request, emerging conflict), the assistant won't risk answering blind. It sends you a notification by email or on Discord so you can take over yourself.
A good vs a bad AI assistant
Not all tools labeled "AI assistant" are equal, far from it. Here are the real differences between a serious assistant and a tool that's faking it.
| Criterion | A good assistant | A bad assistant |
|---|---|---|
| Knowledge of Vinted | Designed from real Vinted conversations, with instructions written for that context | Generic ChatGPT or simple pre-defined templates |
| Intent detection | Finely detects the type of question to pick the right reply | A single pre-formatted reply regardless of the question |
| Negotiation | Multiple progressive stages, with messages adapted to each step | Accepts or refuses based on a simple percentage, no conversation |
| 24h follow-up | Automatic configurable follow-up to recover lost sales | Zero follow-through, once the message is sent it's done |
| Multi-language | Auto-detection + native replies in 10 languages | French/English only, or poor automatic translation |
| Ethical safeguards | Refuses to invent, alerts you when in doubt, respects your rules | Promises anything to close a sale |
Knowledge of Vinted
- A good assistant
- Designed from real Vinted conversations, with instructions written for that context
- A bad assistant
- Generic ChatGPT or simple pre-defined templates
Intent detection
- A good assistant
- Finely detects the type of question to pick the right reply
- A bad assistant
- A single pre-formatted reply regardless of the question
Negotiation
- A good assistant
- Multiple progressive stages, with messages adapted to each step
- A bad assistant
- Accepts or refuses based on a simple percentage, no conversation
24h follow-up
- A good assistant
- Automatic configurable follow-up to recover lost sales
- A bad assistant
- Zero follow-through, once the message is sent it's done
Multi-language
- A good assistant
- Auto-detection + native replies in 10 languages
- A bad assistant
- French/English only, or poor automatic translation
Ethical safeguards
- A good assistant
- Refuses to invent, alerts you when in doubt, respects your rules
- A bad assistant
- Promises anything to close a sale
Real conversation examples
To make this concrete, here are a few screenshots of real Vinted conversations handled by Bleam's AI assistant. These are real messages, from real buyers, with automatically generated replies.
What it actually brings in
The question we don't ask enough: does an AI assistant actually pay for itself? On my own account, the AI assistant closes about 1,868 euros of sales per month (measured in early 2026). Your results depend on your catalog and prices.
These aren't "extra" sales in absolute terms — they're sales that would've been lost without the AI. Because you were sleeping. Because you were at work. Because the buyer found someone faster elsewhere. The assistant doesn't create demand, it prevents you from losing the demand that's already there.
How to turn it on in 5 minutes
Setting up an AI assistant isn't a technical project. It's literally 5 minutes. Here are the steps at Bleam.
- Install the Chrome extension: One click on the Chrome Web Store, the extension installs. Also works on Chromium-based browsers (Brave, Edge, Opera, Arc).
- Connect your Vinted account: The extension automatically detects that you're logged into Vinted. You click to link the account to Bleam, done.
- Configure your preferences: Shipping days, negotiation margin per price range, tone (casual/formal), personality (young, mom, pro, adaptive). Default values are pre-set if you want to go fast.
- Activate the Assistant: A toggle to flip. From that moment, the Assistant reads your Vinted messages and replies automatically based on your rules.
You can disable the Assistant at any time, or configure it item by item if you want to keep some listings for yourself. You always stay in control.
Go further
Félicien — Founder of Bleam, Vinted reseller for 7 years
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Domande frequenti
Will the buyer notice it's an AI replying?
No, not if the assistant is well built. Natural response delays, pauses between messages, phrasing variations, Vinted-style writing — all these details make the buyer feel they're talking to a human. Across 10,000+ pro sellers using Bleam, we've never had a buyer guess.
Do I keep control over what the assistant sends?
Yes, 100%. You configure your rules (margins, shipping days, tone, personality), you can disable the assistant item by item, and it notifies you when it doesn't know how to reply so you can take over. Nothing slips past you.
What happens if the assistant doesn't understand a message?
It doesn't reply blind. It sends you a notification by email or on Discord with the message in question, and you decide how to reply. The idea is that it handles what it's sure about and saves you time on the rest, not that it risks saying anything.
Can Vinted ban my account if I use an AI assistant?
The risk is low. Bleam does for you what you'd do by hand (sending messages, relisting items), spacing out its actions to stay within Vinted's limits, and it doesn't change how the site works. No tool can promise zero risk, but over 10,000 sellers use Bleam every day. Be wary of tools that promise to “get around detection”: those are the ones that put your account at risk.
How many languages does the assistant handle?
At Bleam, 10 languages: French, English, German, Spanish, Italian, Portuguese, Dutch, Polish, Swedish, Danish. You choose the language the assistant replies in. Handy if you sell across multiple European markets.
Does the assistant also handle negotiation?
Yes, it's one of its big strengths. It detects price offers, applies your margin rules per price range, makes progressive counter-offers (not just a binary yes/no), handles bundles with margin bonus, and never goes below your floor price.
How much does it cost?
Bleam's AI assistant is included in the Business plan (€60/mo, €51/mo billed quarterly), with a 14-day, no-commitment free trial. On my own account, it closes about €1,868 of sales per month (measured in early 2026), far more than enough to pay for the subscription.
How long does it take to set up?
5 to 10 minutes. Install the extension, connect the Vinted account, configure your preferences (margins, shipping days, personality). The assistant starts working the moment you turn it on.
Can I turn it off whenever I want?
Yes, in one click. You can also disable it item by item if you want to keep certain listings for yourself. And of course, the Bleam subscription is cancellable anytime in one click, no commitment.