AfterShip/email-verifier

Health v2 · maintenance only

Adoption not part of the score

1607 stars · 232 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Go library for verifying email addresses without sending any emails. It validates syntax, checks DNS MX records, performs SMTP verification lookups with catch-all detection, and flags free providers, role accounts, and disposable email addresses.

Use cases

• validate email addresses at signup
• check if an email domain has valid MX records
• detect disposable email addresses
• verify whether a mailbox exists via SMTP without sending mail
• detect catch-all email domains
• check if an email is from a free provider or role account

When to choose

• you need email validation in a Go backend
• you want zero-email-sent verification to avoid spamming users
• you need disposable and role-account detection built in

When to avoid

• you need high-volume bulk email list cleaning with deliverability scoring
• your app is not in Go
• SMTP verification is blocked by your network or target providers (graylisting, rate limits)

Facets

library · maturity active

email form-handling security email developer-tools backend go cross-platform email-verification smtp-check disposable-email-detection mx-records syntax-validation

Member repositories

For agents

markdown · JSON · MCP: product_card(name="AfterShip/email-verifier")