# How to Find Corporate Emails: A Practical B2B Guide for Sales

> Learn how to find corporate emails responsibly, assess address quality, compare finder features, and maintain accurate B2B contact records.

By [Thomas Bonfils](https://getsendable.io/authors/thomas-bonfils) · Published 2026-11-05 · Updated 2026-11-05 · Source: https://getsendable.io/resources/find-corporate-emails

## TL;DR

- To find a corporate email, confirm the person and the domain their company writes from, look for an address the company publishes, then run a finder and keep the verification status next to every address.
- Verification labels differ by vendor: a catch-all server accepts every address, so Hunter's accept_all and FullEnrich's HIGH_PROBABILITY (a 9% bounce rate by FullEnrich's own figure) are not confirmed inboxes.
- Addresses decay fast: in a 50,000-contact cohort, 2.72% of deliverable emails became undeliverable within one quarter and 5.68% of people changed role, so recheck shortly before each send.
- Business email is still regulated: the FTC says CAN-SPAM makes no exception for business-to-business email, and the CNIL allows B2B prospecting in France without consent only when the message concerns the person's job and they can object.
- Sendable has no email database of its own: it finds work emails through FullEnrich, on your FullEnrich account and credits, never on Sendable credits.

To **find corporate emails** that reach the right person, confirm who the person is and which domain their company really writes from, look for an address the company publishes, then run an email finder and keep its verification status next to every address you save. An address that only follows the company's pattern is a guess until a check says otherwise, and even a checked address goes stale: in a [cohort of 50,000 B2B contacts](https://www.aventionmedia.com/research/b2b-contact-decay-index-q4-2026/) that the data vendor Avention Media re-verified through Q3 2026, **2.72% of deliverable addresses became undeliverable within one quarter**.

This guide covers each step, what the verification labels of two common tools actually mean, and the rules that still apply to a business address once you have it. If your prospects come from LinkedIn, the last section shows how Sendable adds work emails to the leads it finds.

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## What do you need before you search for a corporate email?

You need three things: the person's full name, their current employer, and the domain that employer uses for email. A LinkedIn profile URL often covers the first two at once, and several finders accept it as their only input.

Start with the person. A name alone often matches several people, so confirm the current role and company against a source you trust: the company's team or leadership page, a recent press release, a conference speaker bio or the person's LinkedIn profile. In one study of 50,000 B2B contacts, role and employer changes were the largest source of contact decay, larger than addresses going dead.

Then confirm the domain. The website domain and the email domain are not always the same: a group may give every subsidiary one shared domain, a company may have changed its name, and lookalike domains exist. The company's contact page, the media contact of a press release or the sender of a newsletter it publishes tells you which domain its people write from.

## Where can you find a corporate email address?

There are five places to look, from the most certain to the least: an address the company publishes, an address a connection shares on LinkedIn, an email finder, several finders queried in turn, and a guess built from the company's address pattern.

| Method                                                      | What you start from                 | What you get                                         | How sure you can be                                      | Cost                      |
| ----------------------------------------------------------- | ----------------------------------- | ---------------------------------------------------- | -------------------------------------------------------- | ------------------------- |
| The company's own pages (team page, press release, filings) | Name and company                    | An address the company published                     | High: the company put it there                           | Free, but slow            |
| LinkedIn contact info                                       | A 1st-degree connection             | The member's primary email                           | High that it is theirs, but it can be a personal address | Free, once connected      |
| One **corporate email finder**                              | Name and domain, or a LinkedIn URL  | A found or inferred address, with a status           | Depends on the status                                    | Credits per search        |
| Several finders in turn (waterfall)                         | Name and company, or a LinkedIn URL | The most probable address across providers, verified | Depends on the status                                    | Credits per address found |
| Pattern guess plus a verifier                               | Name and domain                     | A candidate such as first.last@                      | Low until verified, and none on a catch-all domain       | Verifier credits          |

By default, LinkedIn shows the primary email a member registered only to their direct connections, and each member can narrow or widen that setting ([LinkedIn Help](https://www.linkedin.com/help/linkedin/answer/261)). That primary email is the address the member registered with LinkedIn, so it can be a personal one rather than a work email.

Finders do not all mean the same thing by a result. Hunter's API has a separate finder that "returns only an email address that was found on the web" and never an inferred one ([Hunter API documentation](https://hunter.io/api-documentation/v2)), which tells you its standard finder can also return addresses built from a pattern.

## How do you search without mistaking a guess for a result?

Follow a fixed order, and record at each step whether the address was published, found by a tool or inferred from a pattern.

1. **Confirm the person.** Check the current role and employer against a source you trust.
2. **Confirm the email domain.** Use the domain the staff write from, not a lookalike or the parent group's website.
3. **Look for a published address first.** Team pages, press releases, speaker bios and regulatory filings cost nothing.
4. **Run a finder when nothing is published.** Give it the name and domain, or the LinkedIn URL, and note whether the result was found or inferred.
5. **Save the status with the address.** Valid, catch-all and unknown lead to different decisions, so never merge them into one Email column without the label.

A pattern such as first.last@ helps you form a candidate, nothing more. Two people with the same name at one company cannot share a mailbox, and one employee's public contact says nothing about whether a colleague's mailbox exists. When email lookup is one step of a wider workflow, our comparison of [lead generation tools](https://getsendable.io/resources/lead-generation-tools) covers the tools that find the people in the first place.

## What does an email verification status actually tell you?

A verification status reports what the recipient's mail server answered when the tool asked whether the mailbox exists, without sending a message. It confirms the mailbox, rejects it, or cannot tell. The common blind spot is the **catch-all domain**: its server accepts mail for any address, so no check can confirm that one person's mailbox exists.

Vendors name these outcomes differently, and some grade the uncertain middle. The table maps the labels of two tools whose documentation spells them out, [Hunter](https://hunter.io/api-documentation/v2) and [FullEnrich](https://docs.fullenrich.com/api/v2/general/email-status), with the bounce rates FullEnrich publishes for its own statuses.

| What the check found             | Hunter's status | FullEnrich's status                                                                 | What to do                                                |
| -------------------------------- | --------------- | ----------------------------------------------------------------------------------- | --------------------------------------------------------- |
| The mailbox exists               | valid           | DELIVERABLE, 2% bounce rate                                                         | Use it, and recheck before a later send                   |
| The server accepts every address | accept_all      | HIGH_PROBABILITY (catch-all but likely valid, 9% bounce rate) or CATCH_ALL (higher) | Send in small batches, or confirm the address another way |
| The mailbox is rejected          | invalid         | INVALID                                                                             | Drop it                                                   |
| The check could not finish       | unknown         | No address returned                                                                 | Treat it as not found and retry later                     |

Two details change how far you can trust a label. Hunter's verifier can return a verification made up to one month earlier, with its date, so a valid status is not necessarily from today. And FullEnrich's bounce rates are its own averages per status: an order of magnitude for planning, not a promise for your list.

## How quickly do corporate email addresses go out of date?

Fast enough to recheck before every send. Avention Media, a B2B data vendor, took 50,000 contacts that all had a deliverable address at the start of Q3 2026, re-verified every record between July 1 and October 15, 2026, and published the results on October 29, 2026 in its [B2B Contact Decay Index](https://www.aventionmedia.com/research/b2b-contact-decay-index-q4-2026/).

| Change within one quarter                           | Share of the 50,000 contacts |
| --------------------------------------------------- | ---------------------------- |
| Job title, seniority or function changed            | 5.68%                        |
| Moved to a new employer                             | 2.75%                        |
| Email became undeliverable                          | 2.72%                        |
| Email check inconclusive (often a catch-all domain) | 1.28%                        |

**People moved faster than mailboxes.** A new role often leaves the address working while making the person the wrong contact for your offer. The study's annualized estimates, about 10% of emails and 21% of roles a year, are presented as planning estimates rather than forecasts, and decay varies by industry and seniority. The study's own advice is to re-verify a list within 30 days of every send. When the list was built weeks earlier, re-confirm each person's role as well.

## How should you compare business email finders?

Judge a **business email finder** on how it fits your process and how clearly it labels its results, not on a headline accuracy claim. Five questions separate the tools.

| Question                                                               | Why it matters                                                               | A clear answer looks like                                                                                                                                                  |
| ---------------------------------------------------------------------- | ---------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| What does a search need?                                               | Decides whether the data you have is enough                                  | Name and domain, or a LinkedIn URL                                                                                                                                         |
| Does it say whether an address was found or inferred?                  | An inferred address is a guess with a check on top                           | A separate label or endpoint for found addresses                                                                                                                           |
| What do its statuses mean?                                             | "Verified" can mean a mailbox check, a database match or a score             | A documented list of statuses                                                                                                                                              |
| What does it charge for?                                               | Per search, per address found or per verification changes the cost of a list | Hunter: 1 credit per search and 0.5 per verification, nothing when no email is found. FullEnrich: 1 credit per work email found, nothing when no address passes its checks |
| Where does its data come from, and how long does it keep your uploads? | You answer for the contacts you import and email                             | A published list of sources and a retention period                                                                                                                         |

Before you commit to a plan, run 20 to 50 people from your own market whose inboxes you can confirm another way. Count how many results come back, how many carry a clear status and how many belong to the right person: that sample tells you more about the cost of a usable contact than any vendor's accuracy figure.

## Is it legal to email a corporate address you found?

Usually, for B2B prospecting, under conditions that depend on where the recipient is. A work inbox does not exempt the message from marketing law.

In the United States, the Federal Trade Commission is explicit about the CAN-SPAM Act:

> "The law makes no exception for business-to-business email."

Its [CAN-SPAM compliance guide](https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business) requires accurate sender information, a subject line that matches the content, a valid postal address and a working opt-out honored within 10 business days, with penalties of up to $53,088 for each email in violation.

In France, the [CNIL](https://www.cnil.fr/fr/la-prospection-commerciale-par-courrier-electronique) allows email prospecting of professionals without prior consent, on the sender's legitimate interest, when the message relates to the person's profession, the person was told their address could be used and can object, and every message identifies the sender and offers a simple way to refuse the next ones. Generic company addresses such as contact@ fall outside these rules.

Elsewhere, check the rules of each market you write to. Whatever the law, record where each contact came from, collect only what your outreach needs, and honor every request to stop.

## How does Sendable find corporate emails?

Sendable is a LinkedIn prospecting tool and has no email database of its own. It finds work emails and mobile phone numbers through FullEnrich, on your own FullEnrich account: the searches use your FullEnrich credits, never your Sendable credits.

Once an owner pastes a FullEnrich API key in **Settings > Integrations > FullEnrich**, anyone in the workspace can search:

- from an empty **Email** or **Phone** cell of the Leads table, a campaign or a signal;
- from the lead's panel;
- for a selection of leads, with **Find contacts**;
- inside a campaign, with the **Find email or phone** step, followed by a **Field condition** that branches on whether the email was found.

![A lead's panel in Sendable: the work email filled in and the FullEnrich button in the empty Phone field](https://getsendable.io/images/resources/find-corporate-emails/lead-email-phone.webp)

Each search needs a LinkedIn profile, or a first name, a last name and a company. FullEnrich charges 1 FullEnrich credit for each work email it finds and 10 for each mobile phone number, and nothing when it finds nothing. Sendable saves FullEnrich's most probable work email, skips any address FullEnrich marks invalid, and only fills empty fields, so an address you typed yourself is kept. Found emails appear in exports and sync to Attio or HubSpot, with Pipedrive in beta.

![The FullEnrich page in Sendable's integration settings, where an owner pastes the FullEnrich API key](https://getsendable.io/images/resources/find-corporate-emails/fullenrich-settings.webp)

Sendable campaigns run on LinkedIn, so a found email goes to your CRM or your email tool, not into a Sendable sequence. The signals that surface the people in the first place are covered in [LinkedIn prospecting software](https://getsendable.io/resources/linkedin-prospecting-software), and the setup steps in the [FullEnrich help page](https://docs.getsendable.io/integrations/fullenrich).

## Make each corporate email earn its place

**A usable corporate email is one tied to the right person, at the right domain, with a status you understand.** Start from the person and the domain, prefer an address the company publishes, treat inferred and catch-all results as uncertain, and recheck before you send. If LinkedIn is where you spot your prospects, Sendable finds them from their activity and adds their work emails through FullEnrich: [see Pro pricing](https://getsendable.io/pricing).

## FAQ

### How do you find someone's corporate email with only their name?

First find their current company and the domain its staff write from, using the company's own pages or the person's LinkedIn profile. Then search by name and domain, or by LinkedIn URL, in an email finder. Keep the address only with its verification status.

### Is a guessed email address safe to use?

No. An address built from the company's pattern is a candidate until a verifier confirms the mailbox, and on a catch-all domain no verifier can confirm it. Sending to guesses raises your bounce rate.

### What does catch-all mean in email verification?

The company's mail server accepts mail for every address at its domain, so a check cannot tell whether one person's mailbox exists. Hunter labels these addresses accept_all, while FullEnrich grades them HIGH_PROBABILITY or CATCH_ALL.

### How often should you recheck corporate email addresses?

Shortly before each send. In Avention Media's 50,000-contact cohort, 2.72% of deliverable addresses became undeliverable within one quarter and 5.68% of people changed role, and the study recommends re-verifying within 30 days of every send.

### Can Sendable find corporate emails?

Yes, through FullEnrich on your own FullEnrich account and credits, from the lead tables, a lead's panel or a campaign step. Sendable has no email database of its own and spends no Sendable credits on these searches.