Your prospecting agent · built on the French company register

Name your customer. It finds them and writes to each one.

Tell Mailbase who you sell to — “plumbers with 1 to 9 staff in Saône-et-Loire”. It pulls every matching company from the register, finds their website and email, checks the address, writes one email per person from a real fact, and sends a few a day. Nothing leaves without your approval.

See it run
No credit cardEvery company in FranceVerified emails onlyYou approve every email
Mailbase agentmeasured run
Find electricians with 1 to 9 staff in Saône-et-Loire and write to each of them.
Runs on the tools your stack already trusts
ClaudeChatGPTuseSendAWS SESCoolifyRailwayStripe
Step 1 · It finds the companies

Every company in France, filtered the way you think.

Activity, place, size, age — in plain words. The agent turns them into register codes and pages through every match. Exhaustive and legal: no scraping, no bought list. Each company is deduplicated on its SIREN, so you never get the same one twice.

How discovery works
Électriciens · Saône-et-Loire · 1–19 staff≈ 145
InelecEric Pierron · Gérant
Le Creusot · 6–9392 361 721
Legrand et FilsLoïc Legrand · Gérant
Givry · 3–5802 611 988
Horloges PlaireFranck Schaeffer · Président
St-Symphorien · 6–9338 176 010
SogelecPatrice Godot · Gérant
Mâcon · 10–19414 707 528
Aralec
Chalon-sur-Saône · 10–19341 544 286
deduplicated on SIREN · page 1 of 6 · about 100 companies a minute
Step 2 · It finds who to write to

Website, legal notice, email — checked before anyone writes.

For each company it finds the site, reads the mentions légales French law requires, pulls the email and the owner’s name, and verifies the address. A site that belongs to someone else is rejected on its SIREN; a placeholder address never passes; a web agency’s email is never mistaken for the company’s.

See the checks
Found in the register145
exhaustive
Website found15
name on the page, or SIREN in the legal notice
Email on their site13
never the web agency’s
Email verified13
mail server checked
5 sites rejected — the legal notice named another company · 2 placeholder addresses dropped
Step 3 · It writes one email per person

No template. One email per prospect, built on something true.

Each email leans on a fact about that company — what their site says, how long they have existed, their town — signed as you, ending on your ask, in their language. You read it, edit it, approve it. The first batch is always yours to review.

See the writing rules
Horloges Plaire · Saint-Symphorien-de-Marmagne
Franck Schaeffer · contact@horlogesplaire.fr verified
from their site · 40 years · horlogerie d’édifice
Vos beffrois et une nouvelle génération
Bonjour Franck,

Votre atelier restaure des horloges d’édifice et des cloches classées depuis quarante ans. Nous créons des expériences Roblox pour faire découvrir un savoir-faire aux 10–25 ans.

Un appel de 15 minutes cette semaine pour voir si ça a du sens pour vous ?

Tahar Amin
Arcade — Mâcon
2 s to write · screened · waiting for youRejectApprove
Step 4 · It reads every reply

Inbound sorted by intent — hot leads never get buried.

The agent classifies each reply (hot, warm, cold, objection, out-of-office), drafts the response, and moves the thread along your pipeline. Auto-reply on the actions you trust; everything else waits for you.

Reply inbox

Every reply sorted by intent. Hot. Needs reply. Auto-handled.

Inbound replies route to the right workspace by sender domain, get classified into hot / warm / cold / objection / OOO, and land assigned to a teammate with a suggested next move.

See the reply inbox
HOT LEADS · 3
Marcus Bell8m
Re: Quick question about Northwind
Hot lead
Priya Anand1h
Re: Launch announcement
Nurture
NEEDS REPLY · 4
Dana Wu3h
Re: Onboarding follow-up
Objection
James Okafor5h
Re: Trial extension request
OOO
What your agent can do

The whole prospecting motion, from register to reply — and it never goes rogue.

Every step maps to a real tool you can watch run. Anything that reaches a person waits for you: the agent proposes, you approve. Once you have reviewed the first batch, let it send on its own.

Ask — agent proposes, you approveAuto — runs the actions you trust

Finds the companies

Every match in the French register — activity, place, size, age — deduplicated on SIREN.

Finds the right person

Website, then the legal notice: the email that is read and the name of who runs it.

Verifies before writing

Wrong sites rejected, placeholder addresses dropped, mail servers checked.

Writes each email

One per person, from a real fact, in your voice, ending on your ask.

Sends a few a day

Your daily cap, your hours, one or two follow-ups. Stops on reply or bounce.

Reads every reply

Classifies inbound by intent, drafts the answer, moves the pipeline.

Never contacts twice

Clients, competitors and past contacts are blocked by company, domain or address.

Protects your sender

Suppressions, bounce and complaint limits, and a kill-switch you cannot outrun.

For power users

Bring your own model. Build on the API.

Run the agent on our included credits, or plug in your own key or ChatGPT subscription and pay nobody a margin. Everything the app does is a REST call away, with signed webhooks for what happens after a send.

  • Model-agnostic — OpenAI, Claude, DeepSeek or local
  • Bring your own key or subscription, unmetered
  • REST API with an OpenAPI contract and scoped tokens
See the developer page
# Send through your own workspace$ curl -X POST https://mailbase.french-web.com/api/v1/send \    -H "Authorization: Bearer mb_live_…" \    -d '{"to":"ada@vercel.com","subject":"Hi"}'  Queued · message id returned. Webhook on delivery.
One real run, measured

Electricians in Saône-et-Loire, 1 to 9 staff — one afternoon, no paid data.

What the engine actually did on a public register, with website lookup by name only. A search provider and SMTP verification raise the rates; nothing here is projected.

145
companies found
every active match in the register
15
websites confirmed
proven by SIREN or name on the page
13
emails found
read on their own site
13
emails verified
mail server checked
5
wrong sites rejected
the legal notice named another SIREN
2 s
per email written
from a real fact, in French

Put your outreachon autopilot.Start in minutes.

See pricing