Guide to the Best Completely Free Email Verification APIs
A proper email marketing strategy is a must for any business. The focus is no longer on the quantity and number of subscribers. Essential metrics like deliverability are what matters now. They truly showcase the effectiveness of your approach.
That’s where email verification APIs might be helpful. They optimize your mailing list and eliminate non-active addresses. It helps you connect with the right people and boost deliverability rates.
Keep reading and learn about the top free email verification APIs and what they can offer you!
All About Email Verification APIs
An email verification API automatically confirms the validity and deliverability of email addresses. You can ensure that all the addresses you use within your system are correct and usable by incorporating them into your work.
This helps you maintain a clean email list. That way, you avoid sending messages to invalid users. Additionally, combining email verification with AI email personalization allows businesses to not only target valid users but also tailor their messages to individual preferences. This enhances engagement and drives better results.
As Ramsay Leimenstoll, an Investment Advisor at Bell Investment Advisors, said
“A small list that wants exactly what you’re offering is better than a bigger list that isn’t committed.”
Here are the key components of these APIs:
- Syntax validation evaluates if the address has the standard format;
- Domain verification checks the existence and valid configuration of the domain name;
- Mailbox verification confirms the existence of a mailbox or user account;
- Disposable email detection identifies if the provider is temporary or disposable;
- Role-based detection highlights addresses connected to general roles;
- Spam recognition determines addresses that send spam traps;
- Live verification to validate addresses as they are entered.
How exactly does it work?
First, you make the submission to the API. It begins with the assessment of email format. Then, it confirms the availability and performance of the domain’s MX records.
The API prompts the mail server to inspect if the exact address exists. Next, it returns a response showing if the email is valid, invalid, or unverifiable. It usually provides detailed status codes.
Why Email Verification Matters?
You have a general idea of how email verification works. Yet, you still may be wondering why it matters so much.
Neglecting this procedure can harm your reputation and operational efficiency. So, here are some reasons to direct your attention to this practice.
SEO agencies emphasize the importance of email verification to ensure effective communication. Proper verification can significantly improve your email marketing results and overall SEO performance.
Deliverability Improvements
Valid addresses improve the odds of your emails bypassing spam filters and landing in the inbox. ISPs monitor your sender’s reputation all the time. They use metrics like bounce rates and spam reports to determine the trustworthiness of your messages.
So, you can lower the risk of triggering spam filters and improve the possibility of successful delivery. This is particularly important if you rely on email communication for advertising or transactional messages.
Lower Bounce Rates
Messages bounce back when you send them to invalid or inactive addresses. This can show signs of email mismanagement to ISPs and service providers. It may lead to penalties or even account suspension.
Verification helps you recognize and remove problematic addresses before you send campaigns. This not only protects your reputation. It also gives a more accurate picture of your audience’s engagement.
Cost Benefits
Many platforms add fees based on the number of messages you send or the size of your subscriber list. Sending messages to invalid users is a waste of these resources. It can increase your expenditures unnecessarily.
So, validation can help you simplify your database. You get to focus on reaching real people who might convert. That way, you can use your marketing budget more effectively.
Fraud Prevention
Invalid addresses are often related to fraudulent practices, like
- Fake account creation;
- Spamming;
- Phishing schemes, etc.
These activities can damage your platform’s credibility and put your authentic users in danger.
Verification helps to identify and block them. This creates a safer environment for your users and saves your business from potential legal consequences.
Better Engagement Metrics
Engagement metrics are the main indicators of your campaign’s success. A valid email list can help you target the real users who are more likely to interact with your messages. So, you can improve
- Open rates;
- CTRs;
- Conversion rates.
By maintaining a clean list, it’s easier to track these metrics and calculate conversion rate effectively, giving you deeper insights into your marketing performance. You’ll get more useful details about your customers’ tastes and behaviors. It allows you to adjust the marketing tactics for better outcomes.
Top 5 Email Verification APIs
You already know why email verification is so important. It can help you improve your marketing efforts. Also, you’ll avoid any negative financial or legal implications related to a lack of secure communication.
It’s time to move on to practical solutions. We gathered some of the best completely free APIs that can help you with this activity. Check them out below.
ZeroBounce
Our first suggestion is ZeroBounce. This solution has more than 350,000 clients, including different global brands. This API can safeguard your email list from invalid entries and improve your delivery rates.
ZeroBounce offers 100 free monthly credits and affordable pricing options starting at $20 for 2000 credits. Besides validation, you can use them for AI scoring and activity data analysis.
Here are the main features of this API:
- Live Validation;
- Bulk email verification;
- Custom allowlists and blocklists;
- Support for different programming languages;
- Bulk file management;
- API usage tracking, and more.
This solution is really straightforward. You just have to create a free account and access your unique API key from the dashboard. Then follow the guides it offers to incorporate it into your systems.
Hunter.io
Another option you can try is Hunter.io. It has a strong API for diverse email checks, including verification.
This option can help you ensure proper format and confirm the existence of the domain address. Also, it analyzes responses from email servers and matches addresses against a curated database.
You’ll receive 50 free monthly credits after creating an account. Also, you can choose a starter plan for $34 after you use them all up.
Some of the main functionalities it offers are
- Detailed status codes;
- Result categories;
- Domain-based rate limitations;
- Retry mechanism;
- Domain search;
- Email Count and Finder;
- API usage control, etc.
NeverBounce
You can try the NeverBounce API as well. It is a premier email verifier ai and list cleaning service. This alternative can offer you
- Hybrid verification technology;
- Mail server validation;
- Free email scrubbing;
- High-risk detection;
- Domain health evaluator, and more.
It has a 20+ step cleaning process that checks each email up to 75 times globally. Neverbounce categorized emails into five clear statuses and provides over 25 additional metrics.
You’ll receive 10 free credits to test the service. Then, you can choose between bulk credits or monthly subscriptions starting at $40 for 5000 credits.
Also, we want to note that this alternative is popular for its high level of security and excellent customer support.
MailboxLayer
Our next recommendation is MailboxLayer. It can present you with advanced verification tools and an intuitive interface.
This API offers instant validation and a daily updated provider database. Here are the main functionalities of MultiboxLayer:
- Syntax and typo checks;
- Quality scoring;
- Catch-all detection;
- Interactive Documentation;
- Encryption;
- Monthly usage stats, etc.
After signing up, you’ll earn 100 free API requests. Pricing plans start at $161.99 per year. Also, you can upgrade to Platinum Support for priority access and personalized assistance.
Plus, we want to highlight that it easily integrates with your existing systems. So, you can keep high email deliverability and avoid the dangers of outdated or low-quality data.
QuickEmailVerification
The last alternative we want to offer is QuickEmailVerification. This API can save you a lot of time and resources by automating the email verification process.
Here are some things it can provide:
- Simple integration with marketing platforms and CRM systems;
- Libraries with different programming languages;
- Domain typos correction;
- Prevention of fake and disposable addresses;
- Advanced bulk verification;
- Customizable reports, and more.
You will get 3000 free credits after creating an account. Then, you can choose the monthly plan starting at $25 for 500 credits per day.
Here’s a comparison table to help you decide which option is more suitable.
| API | Free Credits | Starting Price |
|---|---|---|
| ZeroBounce | 100 | $20 for 2,000 monthly credits |
| Hunter.io | 50 | $34 per month |
| NeverBounce | 10 | $40 for 5,000 monthly credits |
| MailboxLayer | 100 | $161.99 per year |
| QuickEmailVerification | 3000 | $25 for 500 daily credits |
Conclusion
Email address validation is an essential part of any marketing strategy. It can help you improve the deliverability of your messages. You can lower the bounce rates and save expenditures in the long run with its help.
Email verification APIs can be really useful for that activity. They can confirm the existence of accounts and check their validity. So, you can clean up your list for better results.
Hope that you found something useful in our guide! Try the free APIs we described and maybe you’ll find your perfect match.