Accurate, fast and secure email verification service
Verify email lists instantly — reduce bounces, clean data, and protect your sender reputation.
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FAQS
Answers about verification, deliverability and your account.
Everything we get asked, in one place.
Verification Basics
What verification checks, how it works, and what it can’t promise.
What does email verification actually check?
Does email confirmation prove an email address is valid?
Is email confirmation the same as email verification?
Can I verify one email automatically?
Why is a syntax check not enough?
Does email verification guarantee 100% deliverability?
What is the difference between email verification and email validation?
What is email verification?
Does an MX record lookup confirm that a specific mailbox exists?
What is zero-payload SMTP verification?
Can you really verify an email address without sending a message?
Why do standard email verification tools fail on enterprise domains?
What is the most effective B2B email verification technique?
Why do B2B emails take longer to verify than B2C emails?
What is an SMTP handshake in email verification?
What is email validation?
What makes a high-quality email verification tool?
How to verify email address validity for large lists?
What is an email verification service and why is it necessary?
Do email verifiers work on B2B and corporate firewalls?
Understanding results
What each status means and what to do with it.
What should we do with catch-all prospects?
What should sales teams do with invalid results?
Should every unknown or catch-all address be deleted?
What should I do with unknown or catch-all results?
What does a valid result mean?
What does "Unknown" mean in email verification results?
What happens if an email address passes verification but still bounces?
How do I stop disposable emails on my B2C signup form?
Should I delete all catch-all emails from my B2B list?
Should I delete catch-all emails from my marketing list?
Are catch-all emails safe to send to?
Why do businesses use catch-all email configurations?
What is a catch-all email domain?
What is the difference between an email alias and a disposable email?
Do disposable emails eventually become spam traps?
How can I block disposable email addresses on my signup form?
Why are disposable emails dangerous for SaaS companies?
What is a disposable email address?
How do you handle "Catch-All" or "Accept-All" domains?
How does your platform handle "Catch-All" (Accept-All) corporate domains?
Can Email Awesome detect catch-all domains?
Is it safe to send emails to "Catch-All" domains?
How to detect and block disposable email addresses?
Bulk validation & list cleaning
Uploading files, spam traps, duplicates and cleaning cadence.
How accurate is an email list cost estimate?
What counts as a “dirty” email list?
What is Bulk Validation?
Can I use bulk results in my CRM or campaign tool?
When should I clean a bulk email list?
What is bulk email verification?
What is the email bounce rate for ZoomInfo exports?
Why are my Apollo exports bouncing?
How accurate is ZoomInfo's email data in 2026?
Do I need to verify emails from Apollo before sending?
Is Apollo or ZoomInfo more accurate for email data?
How often should I verify my email list?
How often should a B2B sales team clean its email list?
Will cleaning my CSV fix my domain reputation?
How long does it take to clean a CSV with 100,000 emails?
Why can't I just use Excel to clean my email list?
What exactly does a CSV Email Cleaner do?
How can I safely remove spam traps from my email list?
What happens if I send an email to a spam trap?
What is the difference between a pristine and a recycled spam trap?
How do spam traps end up on my mailing list?
What is a spam trap?
Can I verify bulk CSV exports from Apollo, ZoomInfo, or my own scraper?
Does bulk cleaning remove duplicate emails?
Why should I clean my old email list before sending?
What formats do you accept for bulk uploads?
How long does it take to clean a bulk list?
What is bulk email list cleaning?
What are spam traps and how do I remove them?
How often should you clean your email list?
Bounces
Hard and soft bounces, thresholds, and recovering a flagged domain.
Why can't I just remove bounces after the campaign?
What is an acceptable email bounce rate?
What hard bounce rate triggers deliverability problems with Google and Microsoft?
Can I recover a domain that has a high bounce rate history?
How often should I check my email bounce rate?
Will a high bounce rate get my email account suspended?
Does the bounce rate formula include both hard and soft bounces?
At what bounce rate should I be worried?
How does a hard bounce affect my sender reputation?
Will a soft bounce eventually be delivered?
Why do emails hard bounce?
What is the difference between a hard bounce and a soft bounce?
What causes a high email bounce rate and how to fix it?
Does a high bounce rate affect my sender reputation?
Why do emails bounce even when the address looks valid?
Deliverability
Inbox placement, and why clean data is only part of it.
Does bulk verification replace deliverability work?
How do spam complaint rates affect email deliverability?
What email marketing benchmarks differ between B2B and B2C?
What is the average email click-through rate by industry?
What is a good email open rate in 2026?
How do I check my email deliverability?
How does list quality affect email deliverability?
What is the difference between email delivery and email deliverability?
What is a good email deliverability rate?
What is email deliverability?
Does email validation improve my sender deliverability?
What is the difference between a "Spam Word Checker" and this deliverability tool?
Will verifying our lists stop our corporate emails from going to spam?
What is the difference between a spam checker and a deliverability tool?
Why are my emails going to spam instead of the inbox?
Authentication & reputation
SPF, DKIM, DMARC, BIMI and how providers score your domain.
Why can Google Postmaster Tools look incomplete or sparse?
How often should a team review Google Postmaster Tools?
Can Google Postmaster Tools replace email verification?
What does Google Postmaster Tools actually measure?
What do I need before setting up BIMI?
What is the difference between VMC and CMC?
Does Outlook support BIMI?
Do I need a VMC or CMC to use BIMI?
What is BIMI in email?
What DMARC policy should I start with?
How do I check if my SPF, DKIM, and DMARC are working?
What is DMARC alignment and why does it fail?
Do I need all three: SPF, DKIM, and DMARC?
What is SPF, DKIM, and DMARC in simple terms?
Where do I install these records?
Can I have multiple SPF records?
Does an SSL certificate affect my email sender score?
How long does it take to fix a bad sender reputation?
How often does Google Postmaster update my domain reputation?
Can a bad IP reputation ruin my domain sender reputation?
What is a good sender reputation score?
Sender requirements
What Gmail, Yahoo and Microsoft require from bulk senders.
Do Google's sender requirements apply to Google Workspace recipients?
What happens if I don't comply with Google's bulk sender guidelines?
Do Google's bulk sender guidelines apply to cold email?
What is the spam rate limit for Gmail bulk senders?
What are Google's bulk sender requirements in 2026?
Is sending cold emails illegal?
What happens if I fail to comply with Google and Yahoo's guidelines?
How do I implement a one-click unsubscribe?
Do the new sender rules apply to all businesses or just large ones?
What is the maximum acceptable spam rate for Gmail and Yahoo?
What are the new Google and Yahoo email sender requirements?
Will this protect my Google Workspace and Microsoft 365 accounts?
Inbox warm-up
Preparing a domain or inbox before it carries real volume.
Do I need a warm-up tool at all?
Is the Warm-up Tool included in the Free plan?
Should I verify contacts before or after warm-up?
Does Email Awesome guarantee inbox placement?
Does warm-up work if my list is dirty?
What is email warm-up?
How do I warm up a new email domain for cold outreach?
How do hard bounces affect a new email domain?
How many emails should I send per day when warming up?
How long does it take to warm up an email domain?
Why did my domain reputation drop immediately after warming up?
Does using plain text emails help build trust?
Should I warm up my primary company domain?
How long does it actually take to build sender trust?
Does "Email Warm-up" actually help avoid the spam folder?
Does Email Awesome send warm-up emails for me?
How does Email Awesome's Warm-up Tool support email deliverability?
What is an email warm-up tool?
Cold email & outreach
Sending volume, sequencing and staying out of spam.
Who should use this workflow?
Can RevOps automate cold sales verification?
Does Email Awesome replace my cold email platform?
Why verify cold sales lists before sequencing?
Can verification fit into an automated outreach workflow?
How should agencies explain verification to clients?
What lists should appointment-setting teams verify?
Will verification book more meetings?
Why should appointment setters verify leads before outreach?
How does list quality affect how many cold emails I can send?
Does sending more cold emails improve reply rates?
What is the ramp-up schedule for a new cold email domain?
How many inboxes do I need to send 500 cold emails per day?
How many cold emails can I send per day without going to spam?
Why are my cold emails going to spam despite good subject lines?
What subject lines should I avoid in cold email?
Does personalization in subject lines improve open rates?
How long should a cold email subject line be?
What makes a good cold email subject line in 2026?
How many follow-up emails should I send in a cold email sequence?
How do I verify emails before cold outreach?
What is the average cold email reply rate for B2B?
How long should a cold email be in 2026?
What makes a good B2B cold email example?
Why does list quality affect cold email deliverability?
What spam complaint rate is acceptable for cold email?
What are the most important cold email deliverability best practices?
What is cold email deliverability?
Can I use my primary company domain for cold emailing?
How often should I validate my cold email list?
Why are my cold emails going to spam if I use plain text and no links?
How does Email Awesome help me book more meetings?
Why must we verify our B2B data before uploading it to HubSpot or Salesforce?
How does email validation for cold outreach improve my open rates?
Is email verification worth it for cold outreach?
API & developer guides
Validating at the point of entry, plus language-specific guides.
Can I validate emails in my product or workflow?
Is the API only for developers?
What statuses should my app expect?
Why use async verification?
Where should developers use the API?
What is an email validation API?
What is MX record priority and how does it affect email delivery?
How does MX record lookup fit into email verification?
What does it mean if a domain has no MX records?
How do I check MX records for a domain?
What is an MX record lookup?
Can I use the same verification API for both B2B and B2C lists?
Why is my Python SMTP script failing on Yahoo or Gmail?
Can Python verify an email without sending a message?
How does Python check if an email domain exists?
How do I validate email syntax in Python using Regex?
What is the best Python library for email validation?
How do I block disposable emails in a Node.js backend?
Can Node.js perform SMTP handshakes asynchronously?
How do I check MX records in Node.js?
What is the best npm package for email verification?
How do I validate an email address in Node.js?
Should I completely stop using regex?
How does SMTP verification beat regex?
What steps are required beyond regex syntax checking?
What happens if I only use regex for my SaaS signup form?
Why is regex insufficient for verifying emails?
Is the HTML5 input type="email" better than writing custom regex?
Why is my regex blocking valid email addresses?
Can regex check if an email actually exists?
What is the standard regex pattern for validating an email?
What is regex email validation?
How does an email verification API handle accept-all domains?
Can I verify emails in real-time?
Integrations
Zapier, CRMs and the apps your team already uses.
What integrations does Email Awesome support through Zapier?
Do Email Awesome integrations require code?
Which Email Awesome action should I start with?
Can I use Gmail and Google Sheets together?
Which Email Awesome action should I use?
Which Gmail triggers work well?
Is this for sending email campaigns?
Do I need code to connect Gmail with Email Awesome?
Can Gmail labels depend on validation status?
Can I verify email addresses from Gmail workflows?
Can I verify existing HubSpot contacts in bulk?
Can I log HubSpot validation results in Google Sheets?
What should happen when a HubSpot email is invalid?
Which Email Awesome actions work with HubSpot in Zapier?
Do I need code to connect HubSpot with Email Awesome?
Which HubSpot templates are available on Zapier?
Can I verify HubSpot form submissions with Email Awesome?
Can I verify existing Pipedrive contacts in bulk?
Which Pipedrive objects can I use?
Why verify before sequencing?
Which Email Awesome action should I use for Pipedrive?
Do I need code to connect Pipedrive with Email Awesome?
Can validation results update Pipedrive?
Can I verify Pipedrive leads with Email Awesome?
Can I verify an existing ActiveCampaign list?
Which Email Awesome actions can I use?
Should I validate before or after automation entry?
Does this help deliverability?
Do I need code to connect ActiveCampaign with Email Awesome?
Can I tag contacts based on validation status?
Can I verify ActiveCampaign contacts with Email Awesome?
What Airtable fields should I add?
Can I use Airtable for batch verification workflows?
What should happen when an Airtable email is invalid?
Which Email Awesome actions work with Airtable in Zapier?
Do I need code to connect Airtable with Email Awesome?
Can validation results be written back to Airtable?
Can I verify Airtable records with Email Awesome?
What should happen when a row is invalid?
Can I use Google Sheets for batch verification results?
What columns should my spreadsheet include?
Which Email Awesome actions work with Google Sheets?
Do I need code to connect Google Sheets with Email Awesome?
Can Email Awesome write results into Google Sheets?
Can I verify emails from Google Sheets rows?
Can I verify existing Google Forms responses in bulk?
Can I log Google Forms validation results in Google Sheets?
What should happen when a Google Forms email is invalid?
Which Email Awesome actions work with Google Forms in Zapier?
Do I need code to connect Google Forms with Email Awesome?
Which Google Forms templates are available on Zapier?
Can I verify Google Forms responses with Email Awesome?
Can I use Google Sheets with Google Drive results?
Which Email Awesome action fits Google Drive?
What folder process should I use?
Is Google Drive for single or batch validation?
Do I need code to connect Google Drive with Email Awesome?
Can Email Awesome results be saved back to Google Drive?
Can I validate email lists stored in Google Drive?
Does Mailchimp verify emails automatically?
How do I use Email Awesome with Mailchimp?
Will cleaning my list lower my Mailchimp bill?
How do I fix the "Omnivore Warning" on Mailchimp?
Plans, pricing & security
What’s free, how billing counts, and how your data is handled.
Do you charge for Unknown results?
How does Email Awesome pricing work?
When should I upgrade from a free to a paid email verification plan?
What does a free email verification tool actually check?
Is there a free email verifier with no credit card required?
What is the best free email verification tool in 2026?
Is it secure to upload my customer data to a bulk validator?
Is Email Awesome compliant with data privacy regulations?
Is our proprietary sales data safe during the verification process?
What formats do you accept for the free verification?
Why shouldn't I just build my own free bulk email checker?
How many emails can I verify for free?
What does free bulk email verification actually check?
Is there a truly secure free bulk email verifier?