Does MailTag verify emails?

No. MailTag tracks emails and schedules follow-ups but does not verify whether recipient addresses are valid. Truelist performs SMTP-level verification to confirm each address exists.

How do I export my MailTag contacts?

MailTag uses your existing Gmail contacts. Export from Google Contacts by going to contacts.google.com, selecting your contacts, and clicking Export to download a CSV.

Will verifying improve my MailTag deliverability?

Yes. Since MailTag sends through Gmail, removing invalid addresses prevents bounces that can trigger Google spam filters and throttle your sending.

Can bounces from MailTag affect my Gmail account?

Yes. Gmail monitors bounce rates closely. Too many bounces can result in temporary sending restrictions or your emails being routed to spam across all recipients.

Free MailTag Email List Verifier

MailTag is a Gmail extension that adds email tracking, auto follow-ups, and scheduling directly inside your Gmail inbox for sales professionals.

Why verify your MailTag email list

MailTag operates inside Gmail, which means your outreach directly affects your Google Workspace domain reputation. Bounced emails from invalid addresses trigger Google spam filters and can restrict your Gmail sending. Verifying recipients before scheduling follow-ups protects your Gmail deliverability.

shield Protect your Gmail reputation: MailTag sends from your Gmail account. Bounces from invalid addresses can get your Google Workspace domain flagged and throttled.
bolt Make auto follow-ups count: MailTag auto follow-ups are wasted on invalid addresses. Verified emails mean every scheduled follow-up reaches a real inbox.
analytics Get accurate tracking data: MailTag tracks opens and clicks. Invalid emails skew your tracking metrics and give you misleading engagement signals.
inbox Stay out of spam: Consistent bounces from your Gmail account train spam filters to deprioritize your emails. Clean recipient lists keep you in the primary tab.

Skip the download-upload dance

Truelist connects directly to popular platforms. Validate your lists in place — no file exports, no re-imports.

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What we check for

Every email in your MailTag list gets a comprehensive validation across multiple risk factors.

check Syntax and formatting errors

check Domain existence and DNS records

check MX record availability

check Disposable email detection

check Role-based address detection

check Catch-all domain handling

check Mailbox existence via SMTP

check Known spam traps and honeypots

How to verify your MailTag list

Three simple steps to clean your MailTag email list and improve deliverability.

Export your contact list

Export your sales prospect list from Google Contacts, your CRM, or any spreadsheet you use with MailTag as a CSV file.

Upload to Truelist

Drop your CSV into Truelist and we will verify every email address against live mail servers.

Use verified contacts in MailTag

Remove invalid addresses from your contact list and only use verified emails when composing and scheduling emails through MailTag.

Other integrations you might like

Verify email lists from other popular platforms.

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Frequently asked questions

Can't find the answer you're looking for? Reach out to our customer support team.

Does MailTag verify emails?: No. MailTag tracks emails and schedules follow-ups but does not verify whether recipient addresses are valid. Truelist performs SMTP-level verification to confirm each address exists.
How do I export my MailTag contacts?: MailTag uses your existing Gmail contacts. Export from Google Contacts by going to contacts.google.com, selecting your contacts, and clicking Export to download a CSV.
Will verifying improve my MailTag deliverability?: Yes. Since MailTag sends through Gmail, removing invalid addresses prevents bounces that can trigger Google spam filters and throttle your sending.
Can bounces from MailTag affect my Gmail account?: Yes. Gmail monitors bounce rates closely. Too many bounces can result in temporary sending restrictions or your emails being routed to spam across all recipients.

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