Email deliverability glossary: 40 terms every sender should know
Forty email deliverability terms defined in one or two sentences each: bounces, SPF, DKIM, DMARC, spam traps, greylisting, sender reputation, inbox placement and verification.
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Deliverability, explained.
Guides and research on email verification, bounce rates, catch-all domains, disposable addresses, list hygiene and sender reputation. Written by the people who run the engine.
14 posts tagged verification
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@Real-time email validation on sign-up forms: how it works and what it catches
Real-time email validation checks an address as it is typed: syntax, typos, disposable domains, role accounts, MX and an optional mailbox check. Here is how it works.
@Free email providers vs business domains in your B2B lists
Gmail, Outlook and Yahoo addresses carry no company signal, so B2B teams segment them. When free addresses are legitimate, how the free and role flags route them, and bulk detection.
@GDPR and email verification: is verifying your list compliant?
Email verification is compatible with GDPR when done under a lawful basis with a processor agreement, minimal data and short retention. What to ask a vendor and what to record.
@How to clean a Klaviyo list before your next flow
Clean a Klaviyo list the right way: export and verify, suppress undeliverable profiles, build a verified-deliverable segment, and keep sign-up forms clean with real-time checks.
@Disposable email addresses: what they are and why you should block them
Disposable inboxes from Mailinator, 10 Minute Mail and similar services die within hours. We cover what they cost you, how detection works and where to block them.
@How to clean a Mailchimp audience (without losing good contacts)
Two safe ways to clean a Mailchimp audience: export, verify and re-import with update existing contacts, or connect Verifyre to tag and unsubscribe undeliverable addresses.
@Catch-all domains explained: why 'accept all' makes verification hard
A catch-all domain accepts mail for every address, real or not, so a verifier cannot confirm a mailbox. Here is how we detect it and how to mail those contacts safely.
@The email list hygiene checklist for 2026
A ten-step email list hygiene checklist: verify at capture, clean before big sends, drop role and disposable addresses, sunset the unengaged and keep your bounce rate under 2%.
@What is email verification and how does SMTP verification work?
Email verification checks whether an address can really receive mail. We walk through syntax, MX, reputation lists, the SMTP handshake, catch-all probes and scoring.
@WooCommerce checkout email validation: stop fake accounts
A mistyped checkout email bounces the receipt and the password reset; fake accounts feed card testing. How to validate email at WooCommerce checkout without blocking real buyers.
@WordPress form spam: stop fake sign-ups with real-time validation
CAPTCHAs and honeypots test behaviour, not the address. Real-time email validation stops typos, disposable domains and dead mailboxes on WordPress forms, with plugin setup steps.
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