Email Verification: How to Check if Email ID Valid or Not
Rajnish
Cold emails help you reach new prospects, grab their attention and generate revenue. So, you can’t afford high email bounce rates, or failure notifications.
But why does it happen?
Usually, the underlying reason for this is an invalid email address. Email address verification is important to ensure email reaches the inbox with efficiency and credibility.
So, in this blog, I’ll explain to you how to check whether an email ID is valid or not with easy and efficient ways. In addition to this, I'll also explain why email verification can never be avoided.
How to Check if an Email Address is Valid: Step-by-Step Guide
Here are some easy methods to check if an email address is valid:
Method 1: Use Email Verification Tools
This method is to verify bulk email senders. In case you want to verify one or a few email addresses, you can jump to the next method.
To check if bulk email addresses are valid using software, use an email verification tool like ZeroBounce, NeverBounce, Hunter, or EmailListVerify. These platforms clean your list by checking syntax errors, domain validity (MX records), disposable emails, spam traps, and inbox existence via SMTP checks.
Upload your email list (usually in CSV format), and the software processes it quickly, marking emails as valid, invalid, or risky. Most tools offer dashboards, integrations, and APIs for automation.
This method is ideal for marketers, cold emailers, and businesses wanting to maintain high deliverability and avoid bounces or spam traps.
Method 2: Check Email Format (Syntax Validation)
First, just start with the basics— if the email ID isn’t in the right format, it’s not valid.
Here’s what a correct structure looks like:
username@domain.com
Common syntax errors:
Missing “@” symbol
Extra spaces or commas
Invalid characters (like “&” or “%”)
Domains like @gmaill.com or @outlook that look right but are wrong
Tip: To know if IDs ending with gmail.com are valid or not, use a regex script or tools like Google Sheets. Or use Excel with regex functions to bulk-check syntax.
Method 3: Check the Domain
This one is an easy process. Just check If the domain exists or not. If it doesn’t then the email can’t be valid.
How can you do it:
Extract the company ID from the email
Paste it into your internet search section
If the website doesn’t load or the domain doesn’t exist
Method 4: Send a Test Email
This is a quick and an easy method to verify email— just send a test email.
Write an email, outlining what you offer, and hit the send button. If the email bounces, your address is invalid.
Caution: This method isn’t accurate and won’t detect catch-all domains or temporary server issues. Moreover, frequent bounce rates will eventually hurt your domain reputation, so use it sparingly.
Method 5: Google It or Search on LinkedIn
If you have time, try this method. Sometimes, a quick search can help you identify email validity.
Paste the email into Google or LinkedIn. If the person is using it professionally (say, for their business or job), there’s a good chance the email is real.
This won’t work 100% of the time — but it’s a great sanity check.
Method 6: Check for Gravatar or Profile Association
This is the easiest way to check email validity. If you're using Gmail or CRMs, hover over an email address. If you see a photo, name, or company info pop up — it means the email is associated with an actual user.
This is subtle, but a smart little hack.
After You Verify: What To Do Next
Now you have verified your email, and it’s clean, next what? If you want to get the maximum ROI from your verified emails, here’s what you gotta do next.
1. Segment Your List
Stop sending the same message to everyone. Break your email list into groups based on:
Behavior (e.g. opened emails vs. ignored)
Funnel stage (cold lead vs warm)
Demographics (location, job title, etc.)
Segmented campaigns get up to 5 times higher engagement rates.
2. Craft Personalized Campaigns
Use data to personalize the following things:
Subject lines (e.g. “Hey John, quick idea for Acme Corp”)
Body content (mention pain points or roles)
Timing (schedule emails based on their timezone)
Tools like Manyreachsupport dynamic variables and personalization at scale.
3. Automate and Follow Up
Follow-up means inviting fortune. Set up automated flows to:
Nurture cold leads
Send onboarding emails
Share case studies or offers after a demo
Automation platforms like Manyreach, can help you streamline this.
4. Track the Right Metrics
Numbers never lie. That’s why watch these stats closely:
Open Rate
Click-Through Rate (CTR)
Reply Rate
Bounce Rate
Spam Complaints
Use the insights to tweak your subject lines, email copy, CTA placement, or send time.
5. Keep Your List Updated
Emails go stale fast. People change jobs, abandon inboxes, or switch providers.
Best Practice: Re-verify your email list every 3–6 months and before any major campaign.
6. Stay GDPR & CAN-SPAM Compliant
Emailing without consent is not only annoying — it’s illegal in many countries.
Always:
Include an unsubscribe link
Get explicit opt-ins when possible
Don’t buy shady email lists
Respecting privacy laws builds trust and protects you from legal headaches.
Why Email Verification Should Be Your First Priority
Are you still thinking why you need to verify email addresses in 2025? One of the first reasons why email verification is important is because of less bounce rates. Lesser bounce rates mean more chances of building new prospects.
Here are some reasons why it is important now:
1. Reduce Bounce Rates
High bounce rates are equal to lower deliverability, which means fewer people seeing your emails. This is the reason why email verification is important, as it prevents bounce rates considerably.
2. Protect Your Domain Reputation
Email providers often decide whether your emails should land in inbox or spam through your senders' list. So, sending to spam-trap email addresses damages your domain’s trustworthiness.
3. Save Money and Time
It costs a considerable amount of money and time to send emails to new prospects. So why waste it on those, who’ll never receive, let alone open and see your offerings?
4. Boost Campaign Performance
A verified list means a clear list. So, of course more people will receive your emails. It will directly increase open rates, replies and in turn will increase your revenue.
Final Thoughts: The Real ROI of Verification
Verifying your email list isn’t just a hygiene step. It’s the foundation of your deliverability, engagement, and revenue.
So whether you're doing cold outreach, customer onboarding, or running a newsletter — make sure your emails are hitting real inboxes, not dead ends.
Use tools like Manyreach to verify fast and at scale
Follow up only with people who actually exist
Keep your list clean, segmented, and compliant
Watch your campaign ROI grow
FAQs
Q1. What is the best way to check if an email ID is valid?
Employing a professional email verifier such as Manyreach is the most efficient and safest method of determining whether an email ID exists or not.
Q2. Can I manually verify an email address?
Manual techniques such as syntax checking and sending a test email can work. However, they are not scalable and not as good as using a specialist tool. Therefore, it’s best to go for an email verifying tool like Manyreach.
Q3. How often should I verify my email list?
It's a good idea to check your email list at least every three to six months. More so, you should do it particularly before a big email campaign.
Q4. What to do After Finding Out that the Email is Valid?
After finding out about the email's validity, you can start with your email campaigns. Before that you can segment your email list and plan your email campaign.
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