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Email Extractor

Extract and deduplicate common ASCII email-address candidates from supplied text. Provide Text containing email candidates to compute results directly in your browser. Pattern-based ASCII local part and DNS-style domain candidates, not comprehensive RFC mailbox validation, international mailbox support, deliverability checking or website crawling. Case-insensitive duplicate key; preserves first spelling. No separate candidate-count cap within the 100,000 UTF-16-unit input limit; maximum supported result is 1,000,000 UTF-16 code units.

Free to useNo sign-upRuns in your browser
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Enter the inputs, then select Extract emails.

Up to 100,000 UTF-16 code units; processed in this browser. Empty input is supported.

Your result
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How the Email Extractor Works & Core Formula

The Email Extractor evaluates Text containing email candidates in client-side JavaScript using the deterministic rule below and updates the output panel immediately without uploading data to a server.

Extract and deduplicate common ASCII email-address candidates from supplied text.

Pattern-based ASCII local part and DNS-style domain candidates, not comprehensive RFC mailbox validation, international mailbox support, deliverability checking or website crawling. Case-insensitive duplicate key; preserves first spelling. No separate candidate-count cap within the 100,000 UTF-16-unit input limit; maximum supported result is 1,000,000 UTF-16 code units.

Concept diagram for Email Extractor, showing text containing email candidates input and the supported output.
Concept diagram; the three operation images are actual browser captures.

Email Extractor Quick Reference & Input Guide

Review the input parameters, allowed value ranges, and worked reference cases for the Email Extractor below before running your calculation.

Parameter / ScenarioDefault / Sample ValueRule or Allowed RangeOutput / Usage Note
Input: Text containing email candidatesContact alice@example.com or bob@...Up to 100,000 UTF-16 code units; processed in this browser. Empty input is supported.Optional workspace parameter
Worked Case 1: Baseline run (Text containing email candidates = Contact)Preloaded / test valuesExtract and deduplicate common ASCII email-address candidates from supplied textText containing email candidates = Contact alice@example.com or bob@example.org. alice@example.com. The displayed output is alice@example.com bob@example.org.
Worked Case 2: Comparison scenario (email extractor 1.6)Preloaded / test valuesExtract and deduplicate common ASCII email-address candidates from supplied textText containing email candidates = Two: z@example.net and a+tag@example.com; z@example.net. The displayed output is z@example.net a+tag@example.com.

Step-by-Step Guide to Using the Email Extractor

Follow these three steps to configure Text containing email candidates, verify unit and boundary rules, and export your Email Extractor output.

Enter text containing email candidates

Enter text containing email candidates. Up to 100,000 UTF-16 code units; processed in this browser. Empty input is supported.

Extract emails
Input and settings
Email Extractor: input and settings in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Check the input convention

Pattern-based ASCII local part and DNS-style domain candidates, not comprehensive RFC mailbox validation, international mailbox support, deliverability checking or website crawling.

Extract emails
Tool result
Email Extractor: tool result in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Extract emails and read the output

Select Extract emails to see the first-seen email-address candidates. Copy result copies this text; Download saves it as a TXT file.

Extract emails
Review the details
Email Extractor: review the details in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Practical Worked Examples for Email Extractor

These concrete scenarios illustrate how the Email Extractor processes baseline inputs, comparison checks, and boundary constraints.

Baseline run (Text containing email candidates = Contact)

Text containing email candidates = Contact alice@example.com or bob@example.org. alice@example.com. The displayed output is alice@example.com bob@example.org.

Extract emails
Developer input and configuration represented by document cards.
Prepare the input. Concept illustration.

Comparison scenario (email extractor 1.6)

Text containing email candidates = Two: z@example.net and a+tag@example.com; z@example.net. The displayed output is z@example.net a+tag@example.com.

Extract emails
A developer example flowing from input to reviewed output.
Inspect an example. Concept illustration.

Boundary & unit check (Email Extractor)

When solving for 'email extractor', verify that Text containing email candidates use consistent units and stay within the documented scope: Pattern-based ASCII local part and DNS-style domain candidates, not comprehensive RFC mailbox validation, international mailbox support, deliverability checking or website crawling. Case-insensitive duplicate key; preserves first spelling. No separate candidate-count cap within the 100,000 UTF-16-unit input limit; maximum supported result is 1,000,000 UTF-16 code units.

Extract emails
Developer output handed to the next stage of a workflow.
Use the result in your workflow. Concept illustration.

How to Read and Verify the Email Extractor Output

The output panel reports the exact result derived from Text containing email candidates alongside any unit or formatting notes.

The result is the first-seen email-address candidates. Prepare an address list from text you paste.

Pattern matches are candidates; the page does not verify mailbox existence or delivery.

Example input
Text containing email candidates = Contact alice@example.com or bob@example.org. alice@example.com
Example output
alice@example.com bob@example.org
Extract emailsExtract emails
A developer result reviewed alongside its source.
Review the returned output. Concept illustration.

Scope Limits, Accuracy Assumptions & Related Text Tools Tools

Review these boundary constraints and validation rules before relying on the Email Extractor output.

Operational scope: Pattern-based ASCII local part and DNS-style domain candidates, not comprehensive RFC mailbox validation, international mailbox support, deliverability checking or website crawling. Case-insensitive duplicate key; preserves first spelling. No separate candidate-count cap within the 100,000 UTF-16-unit input limit; maximum supported result is 1,000,000 UTF-16 code units. Inputs that violate minimum/maximum bounds or required format rules are rejected with a clear diagnostic prompt.

Need an adjacent calculation in Text Tools? Use the related tools linked below to chain your workflow without leaving your browser.

Extract emailsExtract emails
Input format and assumptions reviewed for a developer task.
Check format and assumptions. Concept illustration.

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Frequently Asked Questions About Email Extractor

Answers about using Email Extractor and understanding its results.

What formula or rule does the Email Extractor use?

The Email Extractor applies the rule: Extract and deduplicate common ASCII email-address candidates from supplied text. Enter Text containing email candidates into the workspace and the tool computes the exact output in your browser.

What input parameters and units are required for Email Extractor?

Yes. Provide Text containing email candidates using the documented units and format shown in the quick reference table above. Preloaded default values let you test the workflow immediately.

What are the accuracy limits and boundary assumptions for Email Extractor?

Pattern-based ASCII local part and DNS-style domain candidates, not comprehensive RFC mailbox validation, international mailbox support, deliverability checking or website crawling. Case-insensitive duplicate key; preserves first spelling. No separate candidate-count cap within the 100,000 UTF-16-unit input limit; maximum supported result is 1,000,000 UTF-16 code units. Confirm that your inputs fall within the allowed ranges before exporting the result.

Is the Email Extractor free and does it keep my inputs private?

Yes. All calculations for the Email Extractor execute 100% locally in your browser's JavaScript runtime. No inputs or results are uploaded to any external server.

Get the first-seen email-address candidates

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Extract emails