You've found the right person. Head of operations at a company that just moved into your category, obviously the one who signs. And there's no address anywhere: the profile shows nothing, the site has a contact form, and all you've got is the domain.
Put the first name, last name and that domain into the tool below. It builds the email formats that company is most likely using and ranks them by how often each one shows up. It's an educated guess, not a verified address. The rest of this page is about what to do with a guess.
Find a professional email by name
No sign-up, no credit card. Nothing you type leaves your browser: the patterns are built on your device, and they're never sent anywhere.
Add a first name, a last name and a company domain.
Most likely formats, best first
Verify the top one before you send to it. A format that looks right is still a guess about a mailbox you've never seen.
Gojiberry finds your prospects for you
Instead of looking up one name at a time, Gojiberry finds qualified prospects for you automatically.
Get your first leads for freeTable of contents
Companies almost never let people pick their own address. IT sets one convention, sometimes two, and everybody hired after that gets slotted into it. That's the whole reason pattern guessing works at all. Find one person's address at a company and you've usually found the shape of everyone else's.
The convention tends to drift in a predictable direction as the company grows. Early on it's first@, because there are eleven people and no two of them share a first name. Then a second Sarah joins, the collisions start, and the company moves to first.last@. Past a few thousand employees you often land on flast@, which packs more names into fewer characters. And at a ten-person shop, the founder is frequently still john@company.com because nobody changed it.
The practical version looks like this. You want the VP of Sales, and nothing comes back for them. So you stop looking for the VP, and you look for anyone else at that company who's already published an address: a support alias on the contact page, a press contact, an engineer who signed a changelog. One confirmed address gives you the convention, and the convention gives you the VP.
Ranked by what we run into most, using Sarah Chen at acme.com as the example.
Those are the patterns we keep running into, not guarantees. The order shifts by industry and by country, and one acquisition can scramble it inside a company that's kept a single format for a decade.
The workflow around the table matters more than the table does:
A correct format proves the company writes addresses that way. It doesn't prove this particular mailbox exists, and it definitely doesn't prove it belongs to the person you have in mind. Four things break a good guess:
Time does the rest. B2B contact data decays at roughly 2.1% a month according to HubSpot's database decay research, and most of that is people moving rather than companies closing: the Bureau of Labor Statistics has median tenure at 3.9 years, with 22% of workers in their current job under a year. The address you guessed correctly in March can be dead in September, and nothing about the format will tell you.
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Your fit: verified contact data
Pattern guessing takes you to the door and stops. Gojiberry returns the verified address behind each prospect and enriches the record around it, so the send is the only thing you're gambling on.
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Your fit: knowing when to write
You don't have a data problem, you have a timing problem. Gojiberry watches your market for the moment someone starts looking, then drafts the message out of whatever triggered it.
A free finder answers one question: what's this person's address? That's a real question and it's worth answering in four seconds. It's also the smallest of the four questions standing between you and a reply.
Why we ended up building this
Roman, one of Gojiberry's founders, spent his days doing outbound at Coco AI. Finding prospects, building the lists by hand, testing messages, and running into the same walls every sales team runs into now. Finding an address was rarely the hard part.
The hard part was the two questions the address doesn't answer: is this person worth contacting, and is there a reason to do it this week rather than in four months. That gap is what Gojiberry was built to close, and it's why the product starts from signals instead of starting from a list.
It's the same gap, and it shows up in customer numbers. GTE Localize, a localization company at around $2.5M in ARR, was running referrals, paid, cold email and manual prospecting. Their email channel kept degrading on deliverability, and their buyers had moved the conversation somewhere else. They switched to working buying signals instead of static lists and generated more than 100 meetings across March and April. Their VP for North America summed up what changed in three words: “Sniper beats shotgun.” Read the case study.

Gojiberry finds qualified prospects, verifies their contact details, and reaches out when they show interest in what you sell. Here's where a free finder stops and where that starts.
Read that table the other way round before you take our side of it. If you look up a handful of addresses a month, the free finder is enough and the rest is overhead you'd be paying for. The moment list building becomes somebody's Tuesday morning, the math changes.
Gojiberry finds qualified prospects for you automatically, verifies their email, and reaches out when they're showing interest in what you sell.
Start free on your marketVerify, don't test by sending
Firing a message at each of the seven patterns to see which sticks is the most common mistake we see, and it's read by inbox providers exactly as it looks. Run the candidates through a verifier, and send once.
Keep bounces boring
Two or three bounces per hundred usually passes without anyone noticing. Large bounce rates teach providers to distrust your domain. One bad list won't end you. Repeating it every week will.
Reach a person, not an inbox
A valid address that lands on info@ or a shared support queue is a bounce with extra steps. Send to the individual mailbox, and skip the generic aliases even when they're the only thing you could confirm.
Bounces and complaints get measured by the people who deliver your mail, and they're the ones keeping score. Google asks bulk senders to keep spam complaints below 0.3%, and a list built out of unverified guesses is a fast way to find that ceiling.
It depends on three things: how big the company is, how consistent it kept its format, and whether it has migrated its mail since. A 20-person startup on a single domain is close to a coin flip you'll win. A 4,000-person group that has bought two smaller companies is a much rougher guess.
Treat the top result as the one to verify first rather than the one to send to.
Usually because the format was right and the mailbox wasn't. The person left, the alias was retired, or the company changed its convention during a migration and only kept forwarding for the people who complained.
Contact data also ages on its own. HubSpot puts B2B database decay near 2.1% a month, and the Bureau of Labor Statistics has 22% of workers in their current job less than a year. Both of those turn up in your bounce report months later, and neither one's visible on the day you guess.
Acquisitions are the usual answer. A company buys a smaller one, keeps the old mailboxes alive, and now there are two conventions under one brand. Long-tenured employees often keep a legacy address after a migration, and some groups run a separate domain per division or per country. A pattern that's right for one division can be wrong for the next.
When two formats appear, take the pattern from the most recent hire you can find rather than from the most senior person, who's the likeliest to be sitting on a legacy address.
Yes, with no sign-up and no credit card. It runs in your browser, so there's no lookup quota to burn and nothing to cancel later.
It also doesn't verify anything, which is the trade you're making for free and unlimited.
A first name, a last name, and the company domain. The domain is the part that matters most: acme.com and acme.io can belong to the same brand, and they'll route mail differently.
If you only have a company name, open the site and copy the domain out of the address bar. Guessing the domain and then guessing the format is two guesses stacked, and it's where most bad lists start.
A free finder answers one question about one person you already picked. Gojiberry picks the people, and it's the part that eats the morning. It tracks more than 30 buying signals across socials and the web, checks each account against your ICP, verifies the contact, and drafts the first message from whatever triggered it.
If you look up four or five addresses a month, the tool at the top of this page is the whole answer and you don't need us.
Try it on your own market
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