Verify email deliverability via syntax, MX/DNS, and SMTP RCPT TO checks.
npx skills add https://github.com/phuaky/pai-skills --skill emailverifier
Please help me install this Agent Skill. Skill: EmailVerifier Source: https://github.com/phuaky/pai-skills/tree/main/skills/EmailVerifier Command: npx skills add https://github.com/phuaky/pai-skills --skill emailverifier
Email deliverability is often misjudged due to fragmented checks. This skill consolidates syntax validation, MX/DNS lookups, and SMTP RCPT TO verification to accurately determine whether an address can receive mail.
Verify a single address by running bun ~/.claude/skills/EmailVerifier/Tools/verify.ts [email protected].
High-intent search queries and answers about installing and using this skill.
Email deliverability verification using SMTP RCPT TO checks confirms whether a mailbox can receive mail by querying the destination server after performing syntax and DNS MX validations. This process identifies invalid addresses.
Validating email addresses in bulk from a CSV file is handled through batch processing workflows designed for lead hygiene. The system reads the CSV, applies syntax and SMTP checks, and outputs deliverability results for scalable data-ops.
Detecting disposable domains and catch-all mailboxes during email verification is achieved through DNS MX lookups combined with optional SMTP catch-all testing. This distinguishes legitimate addresses from temporary or universally accepting domains.
This email validation tool requires the Bun runtime and the bun:sqlite dependency to function. It also requires local DNS access and outbound SMTP connectivity to successfully perform MX lookups and RCPT TO verification.
SMTP email verification can face limitations when destination mail servers block outbound RCPT TO queries or enforce strict rate limits. Historical bounce checks and local DNS access help mitigate false negatives during batch validation.
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