B2B Email List: How to Build One for Cold Outreach and Send It From Gmail

The best B2B email list is a short one: people who share the role, region or industry your offer is built for, each with a verified work email, contacted one to one from your own mailbox. A sharp email sent to the wrong people gets ignored. An average email sent to eighty people who have the problem you solve gets replies.

In short:

• Skip the bulk database. Purchased lists are banned by most email platforms, drive spam complaints and are full of rows you cannot use.
• Filter narrowly. Job title, location, company and a keyword describe an audience far better than “everyone in Germany”.
• Check coverage before you pay. The number of people who match a filter is not the number with a work email.
• Send from Gmail, slowly. Personalize with merge tags, keep the unsubscribe link and respect the daily limit.

This guide covers what makes a B2B email list good, why the classic purchased list fails, how to find business email addresses by hand, and how Find new contacts in Mail Merge for Gmail turns four filters into a verified list for $0.09 a contact that you send from your own Gmail address.

What a B2B Email List Is, and What Makes One Good

A B2B email list is a set of work email addresses of people at companies, collected so that you can contact them about something relevant to their job. A list is only as good as the match between the people on it and the message you send.

Four qualities separate a list worth emailing from a spreadsheet of addresses:

• Relevance: everyone on it shares the trait that makes your offer useful, such as a role, an industry or a region.
• A real work email: an address on record for that person, with a verification status that tells you how confident the provider is.
• Freshness: people change jobs, so a record that was right two years ago may now bounce or reach the wrong person.
• Context: name, job title, company and industry, so that the first line of your email can show you know who you are writing to.

Size is not on that list. Two thousand people who share nothing but a country are a spam complaint waiting to happen. Eighty logistics managers in one region, each emailed about the problem your product solves for them, are a campaign.

Should You Buy an Email List?

“Buy email list” is one of the most common searches in this space, and the honest answer is that the classic version of it is a bad deal. A traditional purchased list is a bulk export sold to many buyers, of unknown age, built to be large and not to be relevant. Three things go wrong with it.

• Email platforms do not accept it. Newsletter tools are permission-based. Mailchimp’s Acceptable Use Policy, for example, prohibits sending campaigns to purchased, rented or third-party lists of any kind. Upload one and you risk the account.
• Complaints follow quickly. Google’s email sender guidelines ask every sender to make unsubscribing easy, to keep the spam rate reported in Postmaster Tools below 0.10% and never to reach 0.30%. A broad list of strangers who never heard of you is the fastest way past that number, and a damaged sender reputation follows your domain into every later campaign.
• You pay for rows you cannot use. A bulk export usually includes rows with no email, an outdated email or a role that has nothing to do with your offer, so the price per usable contact is higher than the price on the invoice.

What works is narrower: specific people who match a tight filter, one verified work address for each, and a one-to-one email from your own mailbox written for that audience. That is cold outreach, a different activity from blasting a purchased database.

How to Find Business Email Addresses for a Narrow Audience

Once you know who you want, there are two ways to find their addresses.

By hand

For a short list, public sources are enough:

1. The company website: team, press and contact pages often list direct addresses.
2. LinkedIn: confirms the name, the current title and the employer.
3. Conference programs, podcasts and bylines: speakers and authors usually publish a contact address.
4. The company pattern: many companies use one format for every mailbox, so one public address from a colleague shows you the format. Verify before you send.

This is free and precise, and it takes several minutes per person: fine for ten prospects, unworkable for three hundred.

With a contact database

B2B contact databases let you filter profiles by job title, location and company. They solve the speed problem and introduce two new ones.

The first is pricing. Many are sold as monthly subscriptions with credits, so a single campaign means a recurring plan.

The second is coverage. The number of people who match a filter is not the number you can email. A company can have several hundred profiles in a database and only a few dozen with a work email on record. A tool that shows only the first number sells you a much smaller list than the one you expected.

So ask two questions of any tool before paying: how many of the matches have a work email, and what will the list cost?

Build a B2B Email List in Mail Merge With Find New Contacts

Mail Merge for Gmail sends personalized campaigns from your Gmail address, from a Google Sheet or from its own contact book. Find new contacts adds the step that comes before all of that: getting the list. It is available on every plan, including Free, and it answers both questions above before you pay.

Step 1: Describe the audience

Open the Contacts page of the web app and press Find new contacts. Four filters describe who you want:

• Job titles, such as Head of Marketing or CTO
• Locations: a country, a region or a city
• Company domains, when you already know the accounts you are targeting
• Keywords about the person or the company, such as SaaS or logistics

Each field takes several values, so “Head of Marketing” and “CMO” can sit side by side.

Step 2: Read the free count

The count updates while you type. It is free and needs no payment method. It shows two numbers: how many people match the filters, and how many of them have a work email on record. The second number is what you can buy, and you see it before you spend anything.

Step 3: Set a budget

Instead of asking how many contacts you want, the dialog asks for a campaign budget, the way an ads platform does. Every contact costs $0.09. A $25 budget buys about 277 contacts, and $1 buys about 11, which is enough to look at real records before committing to more. A budget runs from $1 up to what buys everyone who matches, with a limit of 2,000 contacts per order.

The budget is a ceiling, never a prepayment. The order is built only from people who have an email, the payment form shows the exact amount, and if fewer exist than your budget could buy, the order shrinks and so does the charge.

Step 4: Pay once and get the list

Pay by card, or from your account balance if you have topped it up. There is no subscription and nothing renews. Within a few minutes the contacts arrive as a new contact list, named after your filters and the date. Each contact comes with first and last name, job title, seniority, company, company domain and website, industry, company size, city, country, a LinkedIn profile and the email verification status.

The same button sits inside the campaign builder, under Select recipients. Start there and the new list is selected as the recipients of the campaign you are writing as soon as it is ready.

Try Mail Merge

Build a B2B email list by job title, location and company, see how many people have a work email for free, pay $0.09 a contact and send the campaign from your own Gmail address.

Get Started Free →

What you pay for, and what you do not

Three details from the Find new contacts documentation keep the price honest:

• You pay for delivered contacts. If the provider cannot resolve someone after payment, that contact is not delivered and its $0.09 is credited to your account balance automatically.
• The balance is spent first. Your account has a balance in US dollars that you can top up from $5 to $500 at a time. An order uses it before your card.
• A completed purchase is not refundable. The list is delivered at once, and the payment form says so before you pay. The balance is store credit for contact orders and is not paid back to a card.

The data comes from Apollo, reached through Firecrawl. Mail Merge does not compile the records itself and cannot promise that a person still holds the title shown, which is why each contact carries a verification status.

Send Your Cold Email List From Gmail Without Hurting Your Domain

A new list is a cold email list. How you send it matters as much as who is on it.

• Personalize beyond the first name. The fields that come with each contact are merge tags, so the opening line can name the company and the role. Our guide to sending personalized bulk emails in Gmail shows what that looks like in practice.
• Keep the unsubscribe link. Mail Merge inserts one in every campaign email. A reader who can leave quietly does not press Report spam.
• Respect the daily limit. Gmail caps how much one account can send, and the Free plan of Mail Merge sends up to 50 emails a day. See how many emails you can send from Gmail, and spread a long list over several days.
• Pick the hour. Timing affects whether a cold email gets read. Our guide to the best time to send cold email covers days, hours and time zones.
• Start small. Send the first twenty, read the replies and the bounces, then adjust before the rest goes out.

New to the tool? Mail Merge in Gmail walks through a first campaign.

Three Ways Teams Use a Targeted List

The agency with a niche. A marketing agency that works with software companies filters for “Head of Marketing” and “CMO”, adds Germany as the location and SaaS as the keyword, and sets a $25 budget. That is about 277 people, each of whom can be emailed about a problem the agency already solves for companies like theirs.

The founder with a target account list. A founder who knows the twenty companies that would benefit most enters their domains in the company filter and adds the two job titles that own the decision. The count shows how many of those people have an email before a dollar is spent.

The local service business. A firm that sells to operations teams in one region filters by title and city. The list is short, the email can mention the city, and a short relevant list keeps complaint rates low.

The Rules That Come With a Bought List

Buying a list does not change who is responsible for the emails you send to it. You are.

In the United States, the CAN-SPAM Act sets the rules for commercial email. It requires honest header and subject lines, a valid physical postal address and a clear way to opt out that you honor within ten business days, and it holds the sender responsible even when the sending is outsourced. In Europe, the GDPR and the ePrivacy rules decide whether a business contact may be emailed without prior consent, and the answer depends on the country and on how closely your offer relates to the person’s work. Check the rules for the countries you send to. This article is not legal advice.

Mail Merge’s Terms of Service ask three things of every purchased list: use it only for lawful business-to-business communication, keep the unsubscribe link in every email and honor every request to stop, and never resell or share the contacts outside your account.

In practice, a narrow audience and a relevant message keep you on the right side of all of this.

Find your next 100 prospects

Type a job title and a location in Mail Merge, watch the free count, and set a $1 budget to see what the records look like. Available on every plan, with no subscription to add.

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FAQ

Conclusion

A B2B email list is a decision about who to talk to, written down as addresses. The classic purchased database starts from volume and leaves relevance to chance, which is why platforms ban it and recipients report it. Building the list by hand gets relevance right and runs out of hours.

Find new contacts sits between the two. You describe a narrow audience, see for free how many of those people have a work email, set a budget at $0.09 a contact, and get a verified list in the same tool that sends the campaign from Gmail. Open Mail Merge for Gmail, go to Contacts, type a job title and a location, and watch the count. Start with a $1 budget, write one email those people will recognize as meant for them, and send it from the address they will reply to. The Mail Merge product page covers what the tool does once the list is in your account.