Prospect search and emailing in the same platform

Find your next customers,
and email them without switching tools

Tap into 41,658,014 B2B professional contacts across 147 countries. Filter by role, industry, region and company size, reveal the email per sestaro, then write to them and follow up automatically: emailing is built in, there is no other tool to plug in or pay for.

Get started - 100 free sestaros Explore the search
No credit card - 100 free sestaros on signup, then 75 free every month - GDPR
sestaro.com/recherche
Filters
Industry
Region
Company size
Years of experience
Quality tier
“Marketing lead, tech industry, Paris area”
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Unlock
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Unlock
41,658,014+
B2B contacts
147
countries covered
100%
records with email
10
filter criteria
$0
to get started
All-in-one

From search to outreach, without leaving Sestaro

A multi-country B2B database, precise filters, and emailing built in: you find your prospects and you write to them in the same place.

Advanced filters
Ten combinable criteria: role, industry, region, company size, estimated salary, experience, tenure, LinkedIn network, gender and quality tier.
Email per sestaro
Each record unlocks individually: 1 sestaro = 1 contact. You only pay for what you reveal.
CSV export
Export your unlocked contacts to CSV in one click, ready for your CRM or sequences.
REST API
Automate your prospecting: /search, /reveal and /me endpoints, authenticated with your API key.
Lists
Organize prospects into lists to track your campaigns and find your unlocked contacts.
GDPR & opt-out
Processing under legitimate B2B interest, built-in opt-out form, no address kept in clear on the suppression side.
Your own contacts
Import a CSV file or add records by hand to your lists. Your own data costs zero sestaros: sestaros only pay to unlock a record from our index.
Automatic follow-ups
A first message, then follow-ups that only go out if the prospect did not react. You pick the delay and the hours, and 52 templates are ready to use. Paid plans only.
Your emails arrive
Sestaro checks your sends before they go out, ramps your volume up gradually, drops addresses that no longer exist and handles unsubscribes in one click.
See all questions

Three steps, zero friction

Your first qualified contacts in minutes.

01
Search & filter
Type a role, a company or an industry, then refine with filters. Search and filtering are unlimited and free.
02
Unlock the contact
Select a record and reveal the email for 1 sestaro. You get 100 free sestaros on signup, then 75 free every month.
03
Launch your campaign
Write your message, set the follow-up rhythm, and Sestaro takes care of the sending. You see who opened, who clicked and who replied. Included with paid plans.
Emailing built in

A full emailing tool, not a checkbox

Write, target, follow up, measure: what emailing platforms bill separately already lives in your account, with no second subscription.

52
ready-made templates
15
layout blocks
10
ways to target
0
extra emailing tool
Write the message
  • 52 ready-made templates, in English and in French.
  • Visual editor with 15 block types: heading, image, button, columns, callout, signature.
  • Already have templates built elsewhere? They import as they are.
  • First name, company and job title fill themselves in, and an empty field never leaves a hole in the sentence.
  • Preview, the teaser line shown next to the subject, and a real test before the first recipient.
Pick who gets it
  • Your unlocked contacts, your lists, or your own CSV file.
  • Type a contact in by hand, without spending a single sestaro.
  • Target on what they did: opened, never clicked, already followed up, came from a form. 10 ways to sort.
  • Sign-up forms to paste on your site, in two lines.
  • Sign-up pages hosted on our side, without touching your site.
Follow up on its own
  • One campaign, several messages, with whatever delay you want between each.
  • The follow-up only goes out if they did not open, did not click, did not reply.
  • A contact replies, you mark it: their follow-ups stop right away.
  • You pick the days and hours you send, in the time zone you want.
  • Sends are spread across the day, never five hundred messages at once.
Land in the inbox
  • Before you send, Sestaro tells you whether your message risks landing in junk.
  • The links in your message are checked before it leaves.
  • Your volume ramps up gradually, so mailbox providers do not take alarm.
  • Addresses that no longer exist are dropped on their own.
  • Your prospects reply straight to you: the conversation carries on in your inbox.
Measure what works
  • Opens, clicks and visits to your site, message by message.
  • Robots that open emails on people's behalf are not counted.
  • Report per campaign and per contact, exportable to CSV.
  • A click counts as an open: the figure stays honest even for people who block images.
  • You see at a glance who replied and who is still waiting for a follow-up.
Stay compliant
  • One-click unsubscribe, applied immediately and for good.
  • An address that opted out never receives anything again, in any campaign.
  • We do not keep unsubscribed addresses in the clear.
  • The GDPR objection form is built in, with nothing for you to set up.
  • An account that sends anything and everything is stopped before it harms the others.

Emailing is for paid plans only. Search itself stays free and unlimited.

Pricing

Packs or subscription. Pay for the contacts you unlock.

Free accounts get 75 sestaros refilled every month, no credit card. Beyond that, buy sestaros as never-expiring packs, or subscribe for a monthly top-up. 1 sestaro = 1 unlocked contact. Search stays free and unlimited.

See pricing

Frequently asked questions

How do sestaros work?
1 sestaro = 1 unlocked contact (email). You get 100 sestaros when you open your account, then 75 free sestaros refilled every month, and search and filtering stay unlimited and free. Purchased sestaros never expire.
Do I need a credit card to start?
No. You create your account and instantly receive 100 sestaros, then 75 free every month, with no credit card and no commitment.
Where do the contacts come from?
They are professional B2B records across multiple countries, sourced from public and professional sources. Every email passes a syntax and domain check, included everywhere, free account included. Paid plans add a real-time mailbox check at the moment you unlock: if the address is proven dead, the sestaro you spent is automatically refunded.
Is the data GDPR compliant?
Yes. Processing relies on the legitimate interest of B2B prospecting. An opt-out form removes a contact, and we only keep an encrypted fingerprint to block any future sale.
Can I write to my prospects from Sestaro?
Yes, on a paid plan. You write your message, you set the follow-up rhythm, and Sestaro takes care of the sending. Your prospects reply straight to you, exactly as they would to an email you had written yourself, and you see who opened, who clicked and who replied. No other emailing tool to plug in or pay for.
Do my follow-ups stop when someone replies?
Yes. You mark the reply and the rest stops for that contact: nobody gets a follow-up after already answering you. An unsubscribe, or an address that no longer exists, stops everything too, for good, with nothing for you to watch.
Can I write to my own contacts?
Yes. Import a CSV file or type your records in by hand into your lists, then enrol them in a sequence like any unlocked contact. Your own data costs zero sestaros: sestaros only pay to unlock a record from our index.
How do I know whether my emails are read?
You see, message by message and contact by contact, who opened, who clicked and who came to your site, and you export the whole thing to CSV. The robots that open emails on people's behalf are not counted: an open rate inflated by machines is useful to nobody.

Your 100 free sestaros are waiting

Create your account and unlock your first contacts in minutes. No credit card.

Start for free
100 free sestaros on signup, then 75 free every month