Remove Bad Emails to Improve Your Inbox Delivery Rate

Sometimes good email marketers who practice regular email list hygiene are not able to deliver emails to a specific ISP because of a temporary email block at the ISP. In this situation, the emails usually bounce with the “too many invalid email addresses” error.

In most cases this happens when email marketers engage into risky list building tactics hoping to grow their lists quickly. But legitimate email marketers should understand that list quality beats quantity in the long term.

Desktop Email Verifier vs Online Email Verifier Service Review

When it's time to clean your email list from invalid email addresses, you have the choice of using a desktop email verifier software or an online email verifier service.

In this article we'll give an overview of a desktop and online email verifier so that you can choose the best option for you.

Ease of Use

When it comes to the ease of configuration and use, an online email verifier service is preferable especially if you are not a computer's techie. All you need to do is to buy a package and upload your list to their database. They will send you the verified list back in a few days.

Desktop email verifier software requires time, efforts and some advanced knowledge for the installation and configuration.

Data Safety

If you choose an online email verifier service, you must upload your email list to a 3rd party database. Many people do not want to share their list with a 3rd party and this is the primary reason why they prefer to use a desktop email verifier program. When you use desktop software, your email lists are maintained safely and securely on your local computer.

Real-Time Email Verifier from G-Lock Software

If you use email marketing as a way of communication with your subscribers, clients or customers, then it's important for you to maintain a clean email list with valid contacts.

Advanced Email Verifier from G-Lock Software is desktop email verifier software designed for businesses and individuals who collect email addresses and send newsletters to their subscribers. Our real-time email verifier is a viable solution for standard message delivery errors and high bounce rates you receive from your email service provider. The program verifies every email address from your mailing list and reports back with easy to understand verification results and status codes. Advanced Email Verifier helps reduce bounce rate by removing invalid addresses from your list or database.

Compared to online email verifier services, the Advanced Email Verifier is more affordable as you don't have to pay more as far as your list is growing. You pay only once for the license and you can verify as many email addresses as you need. No limits per day! And you don't have to upload your email lists to a 3rd party database and wait from several hours to several days for the task to be completed. With our Advanced Email Verifier your lists are maintained securely on your local computer and the verification goes in real time.

Email Validation Rules Explained

Although the Advanced Email Verifier has a very good email validation success rate, it is simply not possible to guarantee a 100% accuracy level due to certain factors that are beyond our control. The level of accuracy you can obtain depend on the inbound SMTP connection policy of the remote ISP or ESP, reputation of the incoming connecting IPs and many other factors.

To save your time and protect your IP address from being blocked, we added rules for certain email addresses and domains that force the program to automatically mark the email addresses as "Bad" or "Unknown" without even trying to validate them.

In this article we give the detailed explanation of why certain email addresses/domains are excluded by the rules and what to do if you still want to validate them.

Best Practice of Using the G-Lock Email Verifier

Understanding our Email List Hygiene, Verification & Validation Process

Our Email Validation Software like any other email checker tool can determine about 70-90% of bad email addresses. Advanced Email Verifier connects to the email addresses mail server, as part of the validation process, and asks if the user exists but NEVER send an email to the recipient. If the recipient’s server gives the response that the user exists, the Advanced Email Verifier marks the email address as good. If the mail server says that there is no such user, AEV marks the email address as bad. This means that the Advanced Email Verifier classifies the email address depending on the response of the recipient’s mail server.

Best Practice of Bounced Email Handling

A bounced email is an electronic message returned to the sender because it was not delivered to the recipient for some reason. To understand possible reasons of email bouncing, let's go deeper into theory and trace the path the message takes from the sender's computer to the recipient's Inbox.

To reach the target recipient, the email message must successfully pass through numerous phases. Your email newsletter software sends the emails to your SMTP server or to your ISP SMTP server (it depends on the SMTP server you use). The SMTP server gathers the emails and puts them in a queue, then it sends the messages to the SMTP servers of your recipients' Internet Service Providers by establishing a conversation with the SMTP servers, i.e by connecting to the port 25 on the recipient's SMTP server. The recipient's SMTP server tells the sender's server if it is ready to receive the message or not. If it is not, the sender's mail server terminates the connection and will try again later.

Choosing Email List Verifier Software

Top 10 Questions You Should Ask Before Spending Your Hard Earned Dollars

Email marketing is one of the quickest and most cost effective ways to reach the target audience today. The more subscribers you have, the more you can profit from your list. But not only the list size does matter. To succeed in email marketing, you have to care about your list quality. You have to check the email addresses for validity and remove bad emails forever to avoid sending to invalid addresses, protect your email server domain from getting blacklisted and increase your email campaign performance.

There are many email verifier tools out there. How do you choose the best email list cleaner software? Follow these tips to avoid spending your hard earned money for a bad program.

How to Verify Email Addresses When Your ISP Blocks the Port 25

It has become extremely rare for ISPs to leave the port 25 open for external connections. This makes it impossible for email verifier programs to check email addresses for validity using a direct Internet connection. We kept it in mind when developing the Advanced Email Verifier and implemented the alternate option for email verification in the program.

Keep Clean Mailing List and Increase Subscriber Response Rate

Have you ever measured your email campaigns response rate? If no, it's time to start. Here is a good email tracking service. Email tracking can give you interesting results. For example, you may find that a small list generates a high response while a huge list generates a low open rate. Why so? Because it’s not the number of emails on your list but the quality of the list that really matters.