Reacher — верификация email без отправки писем

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check-if-email-exists is a tool that checks whether an email address exists without sending any email to it. Reach for it when you need to clean or verify an address list before a mailing so you don't send to nonexistent inboxes and hurt your domain's reputation: check syntax, the domain's MX records, and the mailbox's existence on the mail server (an SMTP check without actually sending), and weed out disposable addresses and traps. It ships with an HTTP backend and has an open-source version and a SaaS. Its focus is verifying email addresses' existence without sending, not a mailing service or address collection: the value is lowering bounce rate and protecting deliverability by checking addresses in advance. Use it within the law and privacy (consent, personal-data handling). It suits people who run email campaigns and want a clean, valid list without dead addresses.