Start with your email search box
The fastest way to find an email address is to search your own inbox for the person's name or the domain they work for. Open your email provider — Gmail, Outlook, Yahoo Mail, or whatever you use — and look for the search bar at the top of the page. Type the person's name or company name and hit enter. Your email program will show you every message from or about that person.
If you remember anything else about the email — a project name, a date range, a topic — add that to your search. Gmail lets you search for messages from a specific date range by typing "before:2024/01/15" or "after:2024/01/01". Outlook has a similar feature. The more specific you are, the faster you'll find what you're looking for.
Once you find an email from that person, their address appears in the "From" line at the top of the message. If they've sent you multiple emails, check the most recent one — people sometimes change email addresses, and the newest message will have their current one.
Key Takeaways
- Your email provider's search box is the fastest way to find an address you've already received — search by name, company, or any detail you remember.
- When you find the email, the sender's address is in the "From" line at the top of the message.
- If someone has sent you multiple emails, use the most recent one because people sometimes change addresses.
- Before you contact someone at an old address, check whether they've sent you a newer email from a different account.
- If you need an address you've never received an email from, ask the person directly or check your organization's directory.
Check your contacts and address book
If you've saved someone's email address before, it lives in your contacts or address book. In Gmail, click the "Contacts" button on the left side of the screen. In Outlook, click "People" at the bottom left. Yahoo Mail shows contacts in a sidebar. Search for the person's name and their address will appear.
The address in your contacts might be outdated if you haven't heard from the person in a while. Before you send them something important, verify it by searching your inbox for a recent email from them. If you find a newer message with a different address, use that one instead.
Look in email threads and forwarded messages
If someone forwarded you an email or included you on a group message, you can find addresses in the "To," "Cc," and "Bcc" lines. Open the email and look at the top of the message. You'll see everyone the original sender included. Click on any name to see their full email address.
Be careful with forwarded emails — addresses in old forwarded messages might no longer be current. If the email is more than a few months old, search your inbox for a more recent message from that person to confirm their address hasn't changed.
Ask directly if you're unsure
If you can't find the address in your inbox or contacts, the safest move is to ask the person for it. Send them a message through whatever channel you do have — a text, a call, a message on social media, or an email to an old address with a note asking them to reply with their current one. Most people are happy to provide their email address when asked.
This is especially important if you're about to send something sensitive — a document, a payment, a password reset link. Sending to the wrong address by mistake can expose information to someone you didn't intend to reach. Taking 30 seconds to confirm saves you from that risk.
Verify the address before you hit send
Once you have an address, read it carefully before you send anything. Email addresses are case-sensitive in theory but most providers treat them as case-insensitive in practice — so "John.Smith@company.com" and "john.smith@company.com" reach the same inbox. What matters is getting the spelling right.
Common mistakes: confusing "1" (the number one) with "l" (the letter L), or "0" (zero) with "O" (the letter O). If the address looks unusual or you're not completely sure, copy and paste it instead of typing it. That way you avoid typos. If you're sending something sensitive, send a test message first asking the person to confirm they received it.
Recognize when an address might be fake or compromised
If you receive an email from someone you know but the address looks different than usual, pause before you respond. Scammers sometimes compromise email accounts and send messages from a real person's inbox to their contacts. Before you click any links or read attachments, verify the request makes sense.
If someone you know asks you for money, passwords, or personal information in an email, contact them through another channel — a phone call, a text, an in-person conversation — to confirm they actually sent it. A real person will understand why you're checking. If the email address is slightly different from what you remember (like "john.smith.work@company.com" instead of "john.smith@company.com"), that's a red flag.
Use your email provider's advanced search features
Gmail's search operators let you find emails in specific ways. Type "from:name@example.com" to see only messages from that address. Type "to:name@example.com" to find emails you sent to them. Type "subject:project name" to search email subjects. You can combine these — "from:name@example.com subject:invoice" finds invoices from that person.
Outlook has similar tools. Click the search box and then click "Search Tools" to filter by sender, date, subject, or attachment type. Yahoo Mail's search bar accepts similar commands. Learning these shortcuts saves time if you regularly need to find specific emails.
Frequently Asked Questions
What if I deleted the email but remember the person's name?
Check your trash or deleted items folder — most email providers keep deleted messages for 30 days before permanently removing them. Search your trash by name the same way you'd search your inbox. If the email is gone, ask the person directly for their address or check your contacts to see if you saved it before.
Can I find someone's email address if I've never received an email from them?
Not through your own inbox. If you work for an organization, check the company directory or ask a colleague. If it's someone outside your organization, ask them directly, check their social media profile, or look at their website if they have one. Do not guess at email addresses — sending to the wrong one can expose your message to a stranger.
Is it safe to click on email addresses in forwarded messages?
Yes, clicking on an email address in a message just opens your compose window with that address filled in. It doesn't read anything or run any code. But verify the address is correct before you send — forwarded emails can be old, and people change addresses.
What should I do if I think someone's email account was hacked?
Contact the person through a different method — phone, text, or social media — and let them know. Do not click links or read attachments from emails that seem suspicious, even if they appear to come from someone you know. Ask them to change their password and check their account for unauthorized activity.
Why does my email search sometimes not find a message I know I received?
Some email providers archive old messages instead of keeping them in your inbox, and archived messages don't always show up in search results. Check your archive folder or "All Mail" folder in Gmail. In Outlook, make sure you're searching all folders, not just your inbox. If you still can't find it, the message may have been permanently deleted.