How does built-in email verification work?

When you import a subscriber list or trigger a list clean, our verification engine checks every email address against multiple validation layers: syntax check, MX record lookup, SMTP mailbox verification, catch-all detection, disposable email filtering, and role account detection. Invalid and risky addresses are flagged so you can remove them before sending.

How accurate is the email verification?

Our verification engine achieves 85–90% accuracy across all check types. SMTP mailbox verification — the most important check — confirms whether a specific mailbox exists and can receive email.

Do verification credits reset monthly?

Yes. Each plan includes a set number of verification credits that reset at the start of every billing cycle. Unused credits do not roll over.

Is email verification really included for free?

Yes. Every IGSendMail plan — including the Free plan — includes email verification credits. There is no separate subscription, no per-email surcharge, and no third-party tool required.

What happens when I exceed my verification credits?

You can purchase additional credits at any time. Pricing starts at $5 per 1,000 verifications.

Can I verify emails in real-time on my signup forms?

Yes. Our API supports real-time email verification, so you can validate addresses at the point of capture.

What types of emails get flagged?

Our system flags six categories: invalid mailboxes, catch-all domains, disposable/temporary emails, role accounts, syntax errors, and domains with no MX records. Each contact receives a status: valid, invalid, or risky.

Built-In Verification

Email Verification — Built Into Every Plan

Stop sending to invalid addresses. IGSendMail verifies your subscriber list automatically — catching bad emails, disposable addresses, and risky contacts before they damage your sender reputation.

Start Free — 100 Verifications Included

30-Day Money-Back No Credit Card Required GDPR Compliant

How It Works

Three Steps to a Clean List

Upload or import your list

Import subscribers via CSV, copy-paste, or API. Existing subscribers are verified automatically when you trigger a list clean.

We verify every address

Our verification engine checks syntax, MX records, SMTP mailbox existence, catch-all status, disposable domains, and role accounts — in seconds.

Send to verified contacts only

Invalid and risky addresses are flagged automatically. Send your campaign knowing every address on your list can actually receive your email.

What We Check

Six Layers of Verification

SMTP Mailbox Verification

Connects directly to the recipient’s mail server to confirm the specific mailbox exists and accepts email.

Catch-All Detection

Identifies domains configured to accept all incoming email regardless of the specific address. Flagged as risky.

Disposable Email Detection

Automatically filters temporary and throwaway email addresses from 55,000+ known disposable providers.

Role Account Detection

Flags generic addresses like info@, admin@, support@ that typically have low engagement and high complaint rates.

Syntax Validation

RFC-compliant format checking catches typos, missing characters, and malformed addresses.

MX Record Verification

Confirms the recipient’s domain has valid mail exchange records and can actually receive email.

Pricing

Included on Every Plan — No Extra Cost

Other platforms charge separately for email verification. We build it in.

Feature	IGSendMail Free	Starter	Pro	Business	ZeroBounce	Bouncer
Monthly verifications	100	2,500	10,000	50,000	Pay-per-use	Pay-per-use
Cost	$0	$14	$39	$79	$80/10K	$50/10K
Email marketing included
Automation included
Analytics included

Need more verifications? Additional credits from $5 per 1,000 emails.

FAQ

Frequently Asked Questions

Stop Paying Separately for Email Verification

Get email marketing and email verification in one platform. Start free today.

Start Free — 100 Verifications Included

30-Day Money-Back No Credit Card Required GDPR Compliant