Email Address Extractor

Overview

Finds every email address in pasted text, HTML, CSV exports, logs or email headers and returns a clean list. It removes duplicates regardless of letter case, trims trailing punctuation, skips look-alikes such as logo@2x.png, and can keep or drop chosen domains. The text is scanned locally and never uploaded, and the list is meant for contacts who agreed to hear from you.

How It Works

Paste text or open a .txt, .csv, .html, .eml or .vcf file. Addresses appear on the right with counts of matches, duplicates removed and addresses filtered out, plus a per-domain breakdown you can click to keep a single domain. Options lowercase the results, sort them A to Z or by domain, keep only listed domains or exclude others, and read obfuscated forms like name [at] site [dot] com. Copy the list one per line, comma or semicolon separated, or download .txt or .csv.

Step-by-Step Usage Guide

1. Paste the text that contains addresses, or open a file such as a CSV export.
2. Leave Remove duplicates and Lowercase on for a clean contact list.
3. Enter domains to keep or exclude, or click a domain in the breakdown.
4. Choose the sort order and the separator your mail client expects.
5. Copy the addresses or download them as .txt or .csv.

Technical Specifications & Standards

A deliberately permissive pattern finds candidates, and each one is then checked against the rules that matter in practice. The local part may not start or end with a dot or contain two dots in a row, it is limited to 64 characters and the whole address to 254. Every domain label must be 1 to 63 characters without a leading or trailing hyphen, and the top-level domain must be at least two letters or an xn-- internationalized label. Candidates whose last label is a file extension such as png, webp, js or css are rejected, which removes retina asset names like icon@3x.png that appear in HTML and CSS. Encoded at signs (@, @ and %40) are decoded first, so mailto links inside HTML attributes are found. De-duplication compares addresses case-insensitively; with lowercasing off, the local part keeps its original case and only the domain is lowercased, because domains are case-insensitive while local parts technically are not. Domain filters match subdomains too, so example.com also keeps mail.example.com.

Targeted Use Cases

• Collecting the addresses from a long email thread to set up a meeting invite.
• Pulling customer contacts out of a CRM or helpdesk CSV export for a support follow-up.
• Cleaning a newsletter subscriber export that has duplicates in mixed case.
• Auditing a codebase or log file for hard-coded personal email addresses.
• Listing which company domains appear in an event registration export.

Notes & Gotchas

• Only email people who opted in; mailing scraped addresses breaks GDPR, CAN-SPAM and most providers' terms.
• Use the semicolon separator when pasting into Outlook's To field and commas for Gmail.
• Exclude your own company domain when you want only external contacts.
• Scan the domain breakdown for typos such as gmial.com before importing the list anywhere.

Frequently Asked Questions

Related tools

• URL Extractor - Pull every URL out of any text — logs, markdown, emails — or list unique hosts only.
• Email Address Normalizer - Canonicalize email addresses — strip Gmail dots and plus-addressing, lowercase domains, and detect alias duplicates.
• Duplicate Line Remover - Remove duplicate lines with trim and case options, then sort A–Z or keep original order.
• List Converter & Sorter - Sort, deduplicate, prefix/suffix, number, reverse, shuffle, and change delimiters on multi-line lists — one-click transformations.
• Screenshot & Image Text Extractor (OCR) - Detect text in screenshots on-device via the browser's Shape Detection API (Chromium). Editable output, copy-ready — no upload, no cloud OCR.
• HTML Table Extractor (→ CSV / JSON / Markdown) - Paste HTML and pull every table out as clean CSV, JSON, or a Markdown table - header detection, captions, and multi-table picking included.