Guides
Get more out of your lists.
Short, practical walkthroughs for the everyday email-data jobs our tools were built for.
Sep 16, 2026 · Methodology
Best Email Extractor Tools Compared Honestly
Eight email tools compared on privacy, cost and capability — including where competitors beat us. Verified September 2026.
Sep 16, 2026 · Methodology
Email Extractor vs Email Finder — Key Differences
Extractors pull addresses out of content you own; finders discover unknown professional emails; verifiers check deliverability. Learn which you need.
Sep 16, 2026 · Methodology
Extraction Accuracy and Scale Benchmarks
How we measure extraction correctness and throughput — datasets, budgets, reference numbers and how to reproduce every figure.
Sep 16, 2026 · Validation
MX Records Explained for List Owners
What MX records are, how to read them, and how an MX lookup turns a dead domain into a quarantine decision before you send.
Sep 16, 2026 · Validation
SPF, DKIM and DMARC Setup Guide
Publish the three DNS records that decide inbox vs spam — what each does, how to check it, and the safe rollout order.
Sep 5, 2026 · Analysis
How to Analyze an Email List by Domain and Provider
Break any list into provider share, top domains, TLD spread and quality signals — then turn the breakdown into segments that behave predictably.
Sep 5, 2026 · Formatting
How to Convert an Email List Between TXT, CSV and JSON
Reshape an email list between plain text, CSV, TSV and JSON in seconds — separators, batching, domain columns and sorting, all processed locally in your browser.
Sep 5, 2026 · Analysis
How to Count Unique Emails in a List (and Read the Numbers)
Get total matches, unique count, duplicates removed, distinct domains and TLDs — plus quality signals like role accounts and disposable providers.
Sep 5, 2026 · Validation
Disposable and Temporary Email Detection Without Signups
Spot Mailinator, YOPmail and other throwaway domains in any list instantly — what static detection catches, what it can't, and the policy to pair with it.
Sep 5, 2026 · Extraction
How to Extract Email Addresses from Excel and CSV Files
Pull every email address out of XLSX, XLS, ODS and CSV spreadsheets in your browser — cell by cell, across every sheet.
Sep 5, 2026 · Extraction
How to Extract Email Addresses from PDF and Word Documents
Get every email address out of PDF, DOCX, TXT and MD documents without uploading anything — page-by-page parsing, obfuscation decoding and one-click export.
Sep 5, 2026 · Extraction
How to Extract Emails from a Web Page (Copy-Paste Method)
No crawler, no extension, no upload: copy any page's text, paste it into the extractor, and get a clean deduplicated address list in seconds.
Sep 5, 2026 · Analysis
How to Find All Company Emails by Domain in a Messy List
Turn a mixed address dump into per-company segments: ranked domain table, subdomain folding, domain grouping and clean per-segment export.
Sep 5, 2026 · List hygiene
Gmail Dots, Plus-Tags and Aliases Explained for List Owners
Why j.ohn@gmail.com equals john@gmail.com, how plus-tags multiply one inbox, and when merging these variants is safe — with a one-click walkthrough.
Sep 5, 2026 · List hygiene
How to Reduce Email Bounce Rate by Cleaning Your List
High bounces hurt sender reputation. Run a four-pass cleanup — clean, validate, dedupe, recount — and fix the address problems you can actually control.
Sep 5, 2026 · Validation
Role-Based Email Addresses: Keep, Segment or Suppress?
What info@, support@ and sales@ addresses mean for deliverability, how to flag them in bulk, and a decision framework for outreach lists.
Sep 5, 2026 · Formatting
How to Sort an Email List Alphabetically or by Domain
Order any email list A–Z, grouped by domain, shortest-first or by frequency — with ascending/descending control and stable, export-ready results.
Aug 24, 2026 · Validation
Email List Hygiene — Static Validation vs SMTP Verification
What browser-side email validation can and cannot tell you, how to read verdicts like risky vs invalid, and when you still need a server-side verifier.
Aug 22, 2026 · List hygiene
Remove Duplicate Emails (Including Gmail Aliases)
Why merged exports breed duplicate emails, how case-insensitive dedupe works, and when Gmail dot-trick merging is safe — plus what never to merge automatically.
Aug 20, 2026 · Extraction
How to Extract Email Addresses from Any Text
A repeatable workflow for extracting emails from pasted text, CSVs, Excel, Word and PDFs — without uploading anything.