Limpe sua lista de e-mail gratuitamente – desduplicar e validar
A messy email list hurts your deliverability and wastes your marketing budget. Paste your list and get a clean, deduplicated, validated file in seconds.
Nothing is uploaded — runs entirely in your browserPor que limpar sua lista de e-mail?
Duplicate emails mean you pay twice for the same contact. Invalid emails bounce, damaging your sender reputation. Cleaning before every campaign is the simplest way to improve open rates and protect your domain.
O que esta ferramenta remove?
The tool removes exact duplicates, flags invalid formats, normalizes everything to lowercase, and exports a clean CSV ready for Mailchimp, Brevo, HubSpot or any other platform. It also tells you exactly how many duplicates and invalids were found.
Minha lista é privada?
Completely. Your email list is processed in your browser and never sent to our servers. This is especially important for GDPR-regulated lists or confidential business contacts that you cannot risk uploading to a third-party service.
Free, instant, and 100% private. No account needed.
Open Email List Cleaner →Por que usar ferramentas utilitárias baseadas em navegador?
Online utilities like password generators, text formatters, and URL cleaners are convenient, but most send your data to remote servers. Our browser-based tools process everything locally — your passwords, text, and URLs never leave your device.
This is especially important for sensitive operations like generating passwords, checking password strength, or cleaning URLs that contain tracking parameters. With Presend, you get the convenience of online tools with the security of offline software.
Como nossas ferramentas utilitárias protegem sua privacidade
- All processing happens in your browser using JavaScript
- No data is transmitted to external servers
- No cookies or tracking scripts monitor your usage
- Your input data is cleared when you close the tab
O que você pode fazer com nossas ferramentas utilitárias?
Generate cryptographically secure passwords, check password strength against entropy analysis, convert between JSON and CSV formats, compare text differences, split long text into social media threads, clean tracking parameters from URLs, validate email lists, check color contrast for accessibility, and convert images to Base64 for embedding.
Essas ferramentas são realmente gratuitas?
Yes — all our utility tools are completely free to use, with no registration required, no usage limits, and no watermarks. We believe privacy tools should be accessible to everyone, not locked behind paywalls or subscription models.