Email Validation Best Practices - No More Bounce From Now

Published: 21 Aug 2021 Updated: 02 Oct 2021 Category: Email Marketing

A successful email campaign that has a positive ROI requires an updated email list. For keeping your subscriber lists fresh and your campaigns on pace, follow these email validation best practices. When people leave companies or switch their own email addresses and delete the old email, natural user loss happens. Causes email lists decline by 20–30% every year a study by Stirista.


Email Validation Best Practices


Email specialists advise that you keep your lists up to date on a regular basis. Without regular email list validations, invalid and inactive accounts will continue to expand in your database, leading to bounce backs and your information not being accessed. In this section, you will know all about email validation best practices, how the validation works and what does it mean when your email address is invalid


What is email validation?


Validating email addresses ensures that you are sending emails to genuine people. You will notice more delivery, fewer bounced emails, and maintain your reputation as a credible sender if you have a list of correct and dependable emails.


Email validation is a system that validates if an email is correct and deliverable or not. It uses a quick procedure to detect typos, whether they are honest errors or deliberate misdirections. It also validates if a given email is associated with a reputable domain, such as Gmail or Yahoo. 


It will organize and clean your email list very fast. It also protects your sender's reputation score and maximizes the efficiency of your email program.


Why Have Email Verification?


A good mailing list is the foundation of any digital marketing campaign, whether it's for a blog or an e-commerce site. In the digital world, email marketing is among the most effective marketing tools.


E-marketing offers a 4300 % ROI payback, as per Digital Marketing Affiliation. All of that payback is almost hard to happen mostly on the majority of these other platforms, both virtual and physical. However, among other factors, the health and effectiveness of an e-marketing campaign are mainly controlled by the mailing list health.


According to Marketing Sherpa, email addresses diminish at a percentage of 22% per year. This means more than 20,000 addresses will be invalid in a number of years if you have a 100,000 address mailing list. At that rate, the mailing list will need to be updated and sanitized on a regular basis.


The previous email address is generally erased when a person changes their email account. The email lists to whom the user has subscribed have not been updated. This is most common when people change jobs or email service providers. 7 Email Archiving Best Practices you shoud know about.


When a person changes their email address in the same provider, this is an instance of the same occurrence. Likewise, a change in stance can result in a change in email addresses. Almost all companies provide different user names for their C-level executives than for medium or entry-level executives.


If this is not done, your emails will begin to bounce due to the invalid addresses. Bounce rates and open rates that are too low will give your email service provider the wrong impression. If you haven't noticed, the email provider or e-marketing agency has a sender reputation for your organization.


If you use email marketing services, their servers, along with your company, are at risk of being blacklisted. Consequently, email marketing services as well keep a reputation profile of the sender based on different factors, along with bounce rates. High bounce rates will result in your marketing service blacklisting your company, and you will no longer be able to run campaigns.


As an outcome, it has a big impact on your company. That's why it's crucial to double-check your email list on a regular basis, especially before major campaigns.


Is Email Verification Necessary?


A highly valued set of information is an email address. A database of fresh, accurate, and active email addresses is one of your most valuable assets for your entire digital marketing program. The issue is that, while email addresses are valuable, they aren't perfect. A large number of the email accounts in your record are fake.


Each email address has one common factor: they don't belong to real people, users who sign up for your emails and genuinely like to receive them. As a result, they add no value to your email program.


A database clogged with inactive email addresses is a waste of money, time, and exertion. Another issue is that those addresses lower your performance metrics, leaving you unsure of how well your email is performing.


Sending to a dull list can also harm your mailbox placement, which is the most essential part. Many major ISPs send campaigns with a large number of invalid email addresses to the spam folder.


So, if you're wondering if email verification is required, the answer is yes. Yes, that is correct. This is due to the utility and credibility it provides to the company. The ROI is more favorable, and the business performance may be preserved. Your mailing list will gradually deteriorate without it.



Email validation best practices


Incorrect addresses aren't always made on purpose. In reality, mistyped email addresses are very common. These are all the personal emails of individuals who are looking to hear from you in your intended audience. They are, however, removed from the mailing list owing to "typos."


Similarly, it's conceivable that the owner of the misspelled address may not want marketing emails sent to them. In such an instance, they would have tagged the message as spam, resulting in a negative impact on your brand.


Mostly as result, only one way to make sure that the proprietor of the address expects to give your email is to send an email confirmation. The confirmation email will include a unique URL that will allow the email address owner to confirm that they do indeed want to hear from the business. Double opt-in is another name for this method.


It helps the firm to screen through dangerous individuals that join up with third-party or stolen email addresses, in addition to helping you qualify your subscribers.


How Does Email Validation Help?


Before launching any email marketing campaigns, you should verify your email list. For the best results, you should verify the list. It will give you many benefits.

  • It increases email deliverability by removing all incorrect emails from your database up to 98 % in delivery rates.

  • It helps you keep a positive Sender Score which enhances deliverability.

  • By avoiding sending emails to inactive users, you'll reduce costs and enhance your return on investment.

  • You'll see a greater conversion rate since more emails arrive in inboxes, which means more opens and clicks, as well as better overall performance.


How does email validation work?


Free Email Testing is an email validation best practice that ensures your emails are delivered and will not end up in the SPAM mailbox. You may use email validation tools like ours to validate your mailing list in bulk. It may also be used to block fraudulent sign-ups by adding an API that verifies incoming email addresses in real-time.


This guarantees that bounce rates are kept low and that responses are as pure as possible, and that emails sent to this address are sent to the correct mailbox. You'll need to bulk submit your email data first. It will next run a number of quick tests to determine whether the emails are reliable, harmful, or wrong.


Valid: This means the email address is correct and free of mistakes. This validation will extend to the inbox.


Risky: When the receiver exists, but other factors indicate that this email is still likely to bounce.


Invalid: When an email account is labeled as incorrect, it means that it has issues with syntax, DNS, or inbox.


Who Uses Email Verification?


An email validation is for anyone who uses a mailing list or wants to get people to sign up for anything by email. This might include bloggers, e-commerce sites, digital marketers, social influencers, content providers, and other online businesses.


It allows businesses to maximize the effectiveness of their promotion while also retaining the brand popularity by ensuring a lower bounce rate and high open rate. 


Email Validation Steps


The entire email validation procedure is broken down into three simple phases, which are as follows:


Syntax and formatting check: Email syntax is the first element that email validation systems look for. The correct sequence in which email addresses should be formed is referred to as email syntax. The service will validate the addresses against the syntax of well-known email services. A legitimate Yahoo email address, for example, cannot begin with a number. One of the obvious indications of a fake address is this. 


After that, the service will look for email formatting issues. These are complicated and complex regulations that govern which usernames are allowed for email addresses, like the syntactic rules. Hundreds of thousands of them exist on variations that must be tested. Consequently, there isn't much that can be done about it. The '@' symbol, for example, is required for any email address. Another instance is the use of special characters in email addresses, and so on.


Server confirmation: After validating the email account format and syntax the confirmation process will continue to server confirmation. It'll look for the DNS records for the email's domain names. If you already own an email account that begins with "[email protected]," then "" is the domain as a business name. The validation will check the mail exchanger as a method to confirm if the email account is genuine and capable of receiving emails.


An overflowing email box might also cause bounces. As a consequence, the domain or server confirmation will assist in weeding out those that are legitimate but unable to accept new mail. Because email marketing providers can't tell the difference between phony email addresses and those with overflowing inboxes and the sender's reputation suffers.


Mailbox validationThe mailbox validation is the final and most essential stage in the verification process. The mailbox is confirmed in this stage by the verification. In this validation process, they will check the email inbox's existence whether it's willing to receive emails through the SMTP server.


This verification will send an EHLO message to the email address and then wait for a response from the server. Once you get a server request, it means the e - mail is valid and available on the network.


Because of the technicalities behind it, a real email validation may accomplish all of this without sending a single email. In general, It just takes a few minutes to verify your email address. However, the length of time it takes might vary depending on the size of the mailing list. The age of the mail servers, the amount of traffic on the servers, and the use of modern anti-spam technologies can all slow down the process.


If all these things are accurate, then you have a well formed email address list. 


What is a well formed email address?


The email account is a mailbox's specific identification that is used to send and receive emails. A well formed email address is valid and checks the following factors - 


1. Email structure:

Every email address has three parts: the local portion, the @ sign (pronounced "at"), and the domain name. The domain name comes after the @ sign, while the local portion comes before the @ sign. For example, in the email [email protected], the local  portion is "Johndoe," and the domain is "" Without these components, emails are worthless.


The username indicates a unique name for the mailbox in the local portion.


The @ sign establishes a link between the domain and the email address's owner.


The organization's name is indicated via the domain name. It's a domain name for the organization's website.


2. Local part syntax:The local part, often known as the username, can be up to 64 characters in length and contain the following characters: 

  • Uppercase and lowercase Latin letters (A-Z, a-z);

  • Numeric values (from 0 to 9);

  • Special characters, such as # ! % $ ‘ & + * – / = ? ^ _`. { | } ~


Note: Unless it appears at the beginning or end of an email address, the period character (.) is acceptable for the local part. There can't be two or more periods in a row (for example, [email protected]).


The punctuation(. ), underscore (_ ), hyphen (- ), and plus (+) are the most often used specific figures.


3. Domain name syntax

A domain name, such as, is made up of one or more components separated by a dot. Each component must be no more than 63 characters long and can include the following:

  • Uppercase and lowercase letters (A-Z, a-z);

  • Numeric numbers (from 0 to 9), with the condition that domains cannot be entirely numeric;

  • A hyphen (-), provided it does not appear at the start or end of the domain


Benefits of email verification 


Email validation is very important for those who use these lists for marketing. There are several advantages to it and they are listed below. 


Lower mailing costs: When your emails are delivered to valid inboxes, you get a better return on your investment. You save effort as well as expenses although if you do you’re emailing in house. Because improved deliverability implies less effort and human resources are necessary to keep email lists and databases, this is a win-win situation.


Better reputation: Bounce rates should not exceed 2%, according to most marketing experts. High bounce rates can cause internet service providers to block your emails (ISPs). Alternatively, they could imply that your emails will be sent to spam folders right away.


One of the most important advantages of email validation is that it protects you from bounces and allows you to prevent spam snares. You also avoid people who mark your texts as spam on a regular basis, as well as invalid email addresses.


Better leads: Don't waste your money or time emailing inactive leads. Emails that are invalid will never convert. Validating emails ensures that you're just communicating with persons who choose to get your messages. More sales, more brand exposure, and higher conversion rates all result from higher open rates.


More accurate statistics: Your campaign stats are wrong by invalid and bounced emails. They make determining the true effectiveness of your attempts tough. A good email verifier cleans your mailing lists and generates reports so you can get a significantly better picture of your client evidence and create better marketing decisions.


Proactive approach: It becomes much easier for you to have a process to resolve delivery problems before sending an email is blocked. Email list cleaning and validation can keep you from getting deliverability difficulties before they start.


Ability to personalize: It's all about the user experience in successful marketing. An email validation process will provide you all the necessary details that you need to involve your audience and customers like email username and domain address. 


The intimate relationship your customers have with your business can determine whether you stand or fall.


According to a recent survey, 71 % were more willing to make a buy if email addresses were customized to their interests and hobbies. As a result, the more email data information you have, the more customized your emails will be. 


Free Email Testing will automatically check your emails, giving you peace of mind that you're sending the appropriate messages to the right people. You'll be able to do things like:


  • Analyze and track accurate email statistics.

  • Please increase the number of people who open your emails and how involved they are with emails.

  • Email marketing can help you get a better ROI.

  • Enhance the client experience.

  • Bounce rates should be kept to a minimum.

  • Maintain your reputation as a trustworthy sender.


You may be sitting on a pile of incorrect emails that are harming your ROI if you've been getting more bounce back emails recently or seeing declining open rates.


Email validation test cases


The most essential item in email testing and validating the Email id field. If your website allows users to share their email addresses or has anything to do with email addresses, an attacker might send a virus to your database via email. Email validation should be present to reduce this danger. The tests situations are a bit hazy and get a significant amount of material to cover. Whenever it comes to email validation test scenarios, accuracy is key.


All of the validation test conditions may be split into two categories:


Factors that are favorable:


1) Each email address should have a Local portion.

E.g. [email protected]

2) Email should contain a Domain Name.

E.g. [email protected]

3) Between those there must be a sign "@" in the Local portion and

Business Domain Handle.

E.g. [email protected]

4) A minimum of 1 dot is required.

E.g. [email protected]

5) There should only be two dots at a time.

E.g. [email protected]

6) "underscores" (_) special characters can be allowed.

E.g. [email protected]

7) Email can allow characters and numbers

8) Only ten to twenty characters should be accepted.


Factors that are not favorable:


1) There should be no specific sign in the local section.

E.g. $$**

2) Domain name not valid.

E.g. [email protected]

3) If "@"is not used between the Local portion and the Domain Name.

E.g. rohan&

4) In the domain name, the highest number of "dots" (.) was reached - 3 dots.

E.g. [email protected]

5) Domain Name contains special characters.

Eg. [email protected]***$$$.com




Overall, email verification is a rather simple idea to grasp, and it may significantly improve your company's ability to reach your clients' inboxes. It's also a wonderful method to keep fraudulent accounts at bay and restrict user abuse. Most significantly, by keeping a good sender score reputation, it will allow email marketing and other correspondence to reach your users directly without going to the spam bin. Get the targeted RIO adn know what are the biggest email marketing challenges?


It's advisable to use the aid of a professional email verification service to do this. Free Email Testing specializes in email verification for a variety of clients in a variety of sectors. If you need to discuss your needs with us, don't hesitate to get in touch with us right away, and we'll be delighted to assist you.


We hope you were able to find all of the answers to your email validation best practices questions and that our solutions were of great use to you.


Danielcilla on 31 Aug 2021

Bravo, the excellent answer.

JohnnyWency on 26 Aug 2021

Anything especial.

Robertvoino on 26 Aug 2021

Thanks for an explanation. I did not know it.

RobertGex on 26 Aug 2021

What does it plan?

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