How To Solve Issues With Email Checker API

An email checker API allows you to validate email addresses effortlessly. So, you can reach real customers. But can it really stop spammers effectively? Your database contains a huge number of email IDs. Can the API keep your mailing list clean with authentic IDs efficiently? There are lots of other problems, including potential security threats.

Can you really solve all these issues effectively with an email checker API? In this post, you will find all the details.

What is an email checker API?

An email checker API is a tool for verifying the email addresses on your mailing list efficiently. It helps identify IDs owned by real people. So, you can get access to genuine clients and grow your business effectively. It utilizes advanced features, like typos check, SMTP check, and disposable email ID detection, to ensure the deliverability of your mailing list.

Why should I use an email checker API?

  • Effectively improve email deliverability
  • Significantly reduce bounce rate
  • Protect your sender reputation so that your emails will never end up in the junk folder
  • Save time and money by automating the validation process
  • Keep your mailing list clean with authentic and genuine email addresses

How can I solve issues with an email checker API?

Which issues can you solve with the email verification API? Let’s take a look at some practical examples.

Prevent typos on registration and sign-up forms

One of the most common uses of an email checker API is to prevent typos in sign-up forms. New users are required to enter their email addresses. By enabling the API during the registration, you can help the form spot typos instantly. The users will receive an alert about their mistakes. So, they can make necessary corrections immediately.

If you are using Mailboxlayer for detecting typos, you will get an alternative email suggestion within the API result. Here is an example:

{
  "email": "user@gnail.com",
  "did_you_mean": "user@gmail.com",
  [...]
}

Here, the given email address is user@gnail.com. As you can see, the ID has a typo, which is “gnail.” It should be “gmail.” So, Mailboxlayer suggests an alternative email address with the correct spelling through the “did_you_mean” field.

Identify disposable email addresses easily to stop spammers

Disposable email addresses are widely abused by spammers. They get temporary email IDs from different providers, like Mailinator. Spammers use the addresses for fake sign-ups and to perform fraudulent activities. By utilizing an email checker API, you can identify the disposable email address effortlessly. Let’s try verifying this email address:

support@apilayer.com

Let’s make an API request by passing the email address and the API access key:

https://apilayer.net/api/check
    ? access_key = YOUR_ACCESS_KEY
    & email = support@apilayer.com

You will get this response:

{
  "email": "support@apilayer.com",
  "did_you_mean": "",
  "user": "support",
  "domain": "apilayer.net",
  "format_valid": true,
  "mx_found": true,
  "smtp_check": true,
  "catch_all": false,
  "role": true,
  "disposable": false,
  "free": false,
  "score": 0.8
}

As you can see, the disposable field is set to false. So, the given ID is not from a disposable email address provider.

Also, you can use Mailboxlayer to check the roles of email addresses. You can find the details right here.

Validate a large number of email addresses

The email checker API allows you to perform bulk email address validation. So, you can easily verify a large number of IDs.

If you are using Mailboxlayer, you simply need to append multiple comma-separated email addresses to the API’s base URL. Here is an example:

https://apilayer.net/api/check
        ? access_key = YOUR_ACCESS_KEY
        & email = support@apilayer.com, support1@apilayer.com,
        support2@mailboxlayer.com, ...

As you can see, Mailboxlayer makes it very easy to validate many email IDs. There is no hassle. So, you can perform the bulk email address verification effortlessly.

The API marketplace by Apilayer also provides a suite of highly efficient APIs. It can help you to boost your productivity significantly. Try it now for free. 

Verify email IDs in real-time

The email checker API supports the real-time email address validation feature. It allows you to verify email IDs as they are typed into the registration form. In this way, you can prevent spammers from signing up to your website in real-time.

Mailboxlayer utilizes MX-record lookup and SMTP verification technologies to perform real-time verification. The API checks whether the domain of the given email address is configured to receive emails. If Mailboxlayer finds it in the MX records, you will receive this response:

{
  [...]
  "mx_found": true,
  [...]
}

mx_found field is set to true. So, the email address is valid. If it was invalid, mx_found would have been set to false.

Next, Mailboxlayer performs the SMTP check. If the given address is valid, you will get this response:

{
  [...]
  "smtp_check": true,
  [...]
}

If the email ID was invalid, the smtp_check field would have been set to false.

Securely validate my mailing list

An email checker API features a variety of technologies for protecting your mailing list from potential security threats. For example, Mailboxlayer comes with the industry-standard 256-bit encryption technology. It prevents hackers from intruding on your system while establishing the connection between the API. You just need to attach an “s” to the HTTP protocol. That means you will have to type https://, rather than http://. It will allow the system to utilize SSL for encrypting normal HTTP requests and responses.

Can Mailboxlayer efficiently solve my issues?

Mailboxlayer is a powerful email checker API. It can help identify typos during the registration. It can perform the validation in real-time. Also, Mailboxlayer can verify a large number of email addresses effortlessly. You will never have to worry about potential security threats, thanks to the 256-bit encryption technology. Additionally, it can identify disposable email addresses to stop the spammers. So, you can definitely rely on Mailboxlayer for solving your issues efficiently.

Mailboxlayer is a simple REST API for performing email address validation. It is powerful, secure, and very easy to use.
Try it now for free!

How to Write Email Validation Test Cases

This tutorial will show you how to create email validation test cases. Many applications will collect your email ID. You can purchase tickets, schedule an appointment, and book online on eCommerce sites. All testers should be able to create validation scenarios for email addresses.

The email field is where you send a message to someone. The subject usually includes the sender’s name and the receiver’s. This field can also be used to write other messages or images.

Before we can start our test case, it is important to establish the Acceptance Criteria

What is the Acceptance Criteria in email address validation cases?

We must have functional requirements, as we discussed in requirements post. Let’s define them.

Description: The user must be able enter their email id when they register their account.

Abbreviated Acceptance Criteria

What are the test cases for email address validation?

Positive Scenarios:

  1. Verify the input field accepts a valid email address. Some examples:
    1. example@email.com
    2. example.first.middle.lastname@email.com
    3. example@subdomain.email.com
    4. example+firstname+lastname@email.com
    5. example@234.234.234.234
    6. example@[234.234.234.234]
    7. “example”@email.com
    8. 0987654321@example.com
    9. example@email-one.com
    10. _______@email.com
    11. example@email.name
    12. example@email.museum
    13. example@email.co.jp
    14. example.firstname-lastname@email.com
    15. Valid Email Addresses that appear at glance to be invalid
    16. extremely.”odd\unusual”@example.com
    17. extremely.unusual.”@”.unusual.com@example.com
    18. very.”(),:;<>[]”.VERY.”very@\\ “very”.unusual@strange.email.example.com
  2. Verify email id can contain a dot in the address field.
  3. Verify email id can contain a dot in the subdomain field.
  4. Verify email id can contain a plus sign.
  5. Verify email id can contain an IP address in square bracket.
  6. Verify email id can contain quotes.
  7. Verify email id can contain digits.
  8. Verify email id can contain an underscore.
  9. Verify email id with a valid top-level domain name is valid.
  10. Verify top-level domain can contain a dot.
  11. Verify email id with a dash is considered valid.

Negative Scenarios:

As with all test scenarios, there do exist some negative scenarios you will want to verify. Namely:

  1. Verify an email id cannot exceed 254 characters.
  2. Verify the missing @ symbol in the email id field.
  3. Verify the missing domain in the email id field.
  4. Verify gibberish or garbage is not accepted in the email id text box.
  5. Verify the missing username in the email id field.
  6. Verify encoded HTML within the email id field is invalid.
  7. Verify leading dot in the email id text box is invalid.
  8. Verify trailing dot in the email id text box is invalid.
  9. Verify multiple dots in the email field.
  10. Verify unicode char in the address in the email text box.
  11. Verify invalid IP address format in the email text box.
  12. Verify multiple dots in the domain is invalid.
  13. Verify invalid email addresses like these:
    1. plaintext address
    2. @#@@##@%^%#$@#$@#.com
    3. @email.com
    4. John Doe <example@email.com>
    5. example.email.com
    6. example@example@email.com
    7. .example@email.com
    8. example.@email.com
    9. example…example@email.com
    10. おえあいう@example.com
    11. example@email.com (John Doe)
    12. example@email
    13. example@-email.com
    14. example@email.web
    15. example@111.222.333.44444
    16. example@email…com
    17. CAT…123@email.com
    18. ”(),:;<>[\]@email.com
    19. obviously”not”correct@email.com
    20. example\ is”especially”not\allowed@email.com

Test Diminishing Returns

Remember that testing has diminishing returns and developers should use a well-tested library or regex to test this functionality. These are just a few tests that people might want to run but they are not necessary.

  1. Too many symbols (@). must be verified
  2. Verify all domains at the top.
  3. Verify that there are no top-level domains.

As a tester, it’s important to discuss with the developer what the library code does and doesn’t do. This will help you target your testing efforts for testing email addresses.

FAQ

What is the validation for email?

Email validation is a method to determine if an email address can be reached and is valid. It quickly detects typos and determines whether they are genuine errors or intentional misdirection. It checks whether an email address is associated to a trusted domain.

The Complete Guide to Email Verification Services in 2022

Email verification service is provided to ensure your letters reach inboxes of real customers.

Email verification service is provided to ensure your letters reach inboxes of real customers. It helps you to increase the results from your email marketing campaigns as you get updated data on the actuality of your mailing list. Below you will find everything you need to know about email address verification.

GROUNDING TO Email verification services

If you make sales with email marketing then getting actual information about the validity of your client’s email addresses is very important for your business. Of course, mainly for subscribing to news or registering for your service, you have a valid e-mail address that belongs to your client. However, it is figured out that 22% of emails get deleted or abandoned yearly. Thus, without email verification service you cannot really define the efficiency of your email marketing campaign.

Why? The fact is that you get damaged data about deliverability, conversion rate and other indicators. Moreover, when bounce rate decreases you are at risk of getting sanctions from mailing service which may lead to the inability of your letter to get to the user’s inbox in the future. Read how to increase deliverability of your mails. On the other hand, using email address verification service can let you avoid all of these problems.

DISCLOSING EMAIL VERIFICATION PROCESS

Email address verification consists of three stages:

  • domain confirmation
  • email formatting and syntax check
  • mailbox validation

It all takes seconds for the service to accomplish each stage, however, verification can take even several hours if you have a big mailing list. Below we will tell you more about each of the stages taken.

DOMAIN CONFIRMATION

After the first step is completed, it is necessary to check the validity of DNS records for the specified domain name. Email verification service checks whether the mail exchange is able to accept letters.

EMAIL FORMATTING AND SYNTAX CHECK

Some large e-mail providers have special requirements for e-mail addresses.. For example, the Yahoo e-mail address should start with a symbol, not numbers. In addition, there may sometimes be errors on your mailing list (e.g., no @ email address)..

Thus in order, to make sure all of the emails in your base correspond to the approved syntax and formatting verification service provide a check. This is the first action to be taken from the beginning.

MAILBOX VALIDATION

The last step of email address verification considers enforcement of SMTP protocol in order to validate the mailbox and make sure it exists and able to receive letters. The best services make it even without sending test letters.

It can take more time to complete all of the three stages if the email address belongs to the outdated mailing service or if there are busy servers.

You also may be interested in:

X ways to increase emails deliverability

P.S. You may want to develop your own SaaS service, the team behind mailcheck.co could help you with that. NodeArt.io is an IT Outsourcing company in Ukraine, with good expertise in building SaaS solutions, that follows best practices in software development and product management.

How to Follow-up on a Job Application: Create the Perfect Post-Interview Impression

You applied for a new role and still haven’t heard back from the employer? Are you getting impatient but not sure how to follow up on the application? Look no further, this is where the almighty follow-up email comes into play!

After applying for a job, the eagerness to find out where your application stands can sometimes make the wait seem nail-bitingly long. When following up on a job application, you don’t want to seem too pushy, but not following up means another candidate might snatch the position away from you. Play your cards right however, and you might just boost your chances of getting that dream job!

Before You Follow Up

It’s important to understand that the hiring process can be lengthy, depending on many factors like the size of the company or the number of applicants. Here are a handful of reasons why you may not have heard back from your prospective employer:

  • The application deadline has not yet been reached
  • The employees responsible are ill or on vacation
  • More candidates than expected have applied for the position
  • The selection process is taking longer than planned

When Should You Ask?

As a general rule of thumb, you should wait a week or two before making an inquiry. It’s important to give the employer enough time to review the applications. Mark the date on your calendar and send a well-timed follow-up email—it’s a great way to raise your head above of the crowd!

Do’s and Don’ts

Stick to the following guidelines when you write your message:

DoDon’t
Be friendly and polite when inquiring about your application status and avoid any implication of criticism.Pester the recruiter.
If it’s a small business, allow a minimum of one week before following up, for larger companies, extend this to two weeks.Send a message too quickly. Try to be patient (we know it’s hard!)
Express your interest in the position in an unobtrusive way.Simply repeat your cover letter. Reach out to the recruiter with new and interesting information.
See if you can get an answer as to the next steps in the application process.Put all your eggs in one basket, keep applying for other roles!

When it comes to the perfect email, and especially if you’re applying for a role with a small business or a young startup that may take a more relaxed and informal approach, make sure your message is clear and concise but also friendly and conversational. Here’s how:

  1. Be PoliteTo convey a professional impression, good manners are your currency. Address the HR manager by name and thank them if, for example, you’ve received an acknowledgment of receipt.
  2. Keep it Short and ConversationalA short email is more likely to be answered promptly. No one wants to read a 10,000-word dissertation on your qualifications at the follow-up stage. Be conversational, friendly, and focus on your winning personality. After all, whoever is reading your email might become your colleague in the near future.
  3. Be ConfidentIt’s in your interest to ask about the application. Be self-assured but polite and remind your potential employer why (Hello) it is YOU they are looking for.
  4. Ask a QuestionFormulate a specific question, for example, “when can I expect feedback?” or “how will the application process proceed?”, a concrete question is more likely to elicit a response than a rambling discussion of your suitability for the job.
  5. Signal You’re Available for an InterviewIndicate in your email when you would be available for an on-site interview.
  6. Proof the EmailYou can make a positive impression not only through your application documents but also through your email. The text should, therefore, be free of errors. Check the grammar and spelling and make sure that you’ve correctly named the addressee.

Job Application Follow-up Email Samples

Email templates can help you gather ideas for possible ways to write your own email. However, you’ll need to adapt the email to the job you’re applying for. You can use the suggestions below as a guideline:

Example 1

Hello [Hiring Manager’s Name], I submitted my application for the [job title] position on [DD.MM.YYYY]. I just wanted to make sure you received it and to let you know that I am still very interested in the position. Please do not hesitate to contact me if you require further information. I look forward to hearing back from you. Best regards,[your name]

Example 2

Dear [Hiring Manager’s Name], Thank you very much for your confirmation of receipt on [DD.MM.YYYY].I am aware that a qualitative application process takes time. Nevertheless, I would like to inquire as to when I can expect feedback on my application as I am very enthusiastic about the prospect of filling the [job title] position.Should you have any questions regarding my application documents, please do not hesitate to contact me by email or telephone on [mobile phone number].I am looking forward to your feedback. Kind regards,[your name]

Many HR professionals are active on professional social media platforms, such as Xing or LinkedIn and you can use these channels to contact them. Generally speaking, the same standards apply as for an email. The advantage here is that if the contact person clicks on your profile, you may be able to score points right away if your page is designed seriously and attractively. A picture is worth a thousand words they say!

If you already have another job offer and therefore have to make a decision, describe your situation objectively: you can point out that the notice period with your current employer is about to expire or that you’ve already had an offer but would value an opportunity to interview as you are keen for the role. One thing to remember is that even if you think you’ve found the dream job, don’t stop looking for alternatives until you’ve got a definite answer!

Yahoo Mail vs Gmail: Which One is better Service?

The question of which e-mail service is better, Yahoo mail or Gmail is a rather hotly debated one. In this article the strengths and weaknesses of the individual services will be examined in order to try and determine which one is best for a person’s needs.

Integration of IM and Email

One strong advantage that Gmail has over Yahoo mail is that it allows you to send instant messages to your contacts that are online quickly and easily. While Yahoo has IM as well, it is not nearly as accessible as the one found within Gmail. This is because Yahoo’s IM is separate from its e-mail service. This means that one cannot send quick chat messages in the form of e-mail to contacts and friends on Yahoo, but would instead have to open an entirely new chat bar. This, undoubtedly, would be annoying to most people.

Flexibility with Attachments

Another way in which Gmail shines is in the use of attachments. A person, once done with their e-mail message, is able to quickly and easily put up as many attachments as needed. Yahoo mail requires you to go to a separate screen in order to put up attachments, and you can only put up 5 without being required to add more boxes. Thus, Gmail seems much less of a hassle if one has to send a large amount of attachments.

Folder Organization

One area in which Yahoo mail actually does shine is in the fact that it allows better folder creation and organization. Gmail, while it allows you to label folders, keeps all your folders in approximately the same area, making organization with a large amount of folders difficult. Yahoo mail allows you to label and organize your folders how you like making the mail system better for those who require large amounts of folders that can be easily accessed.

Size of Attachments

One big advantage that Gmail has over Yahoo mail is that Gmail allows for a bigger attachment size. Yahoo mail only allows attachments up to 10mb on its free version, while Gmail allows up to 20mb on its free version. Thus, if you need to put large attachments on your e-mail, whether due to school or work, Gmail has a clear advantage over Yahoo mail.

Brand Impact

Probably one of the more important aspects of Gmail is the fact that it is considered the more “professional” of the e-mail services. People seem to have the strong belief that Gmail is the more credible of the two e-mail services and, due to first impressions being so important, Gmail is a clear winner in professional credibility.

So who’s the winner ?

Overall it seems that Gmail is a clear winner. It’s easily accessible which is very important for people who have large amounts of experience with e-mail as well as for those who are just stepping into the digital world. Gmail also allows larger attachments then Yahoo mail, which is critical for those like students or businesspeople that need to get large amounts of material to the proper place. Another, and quite possibly the biggest,  advantage that Gmail offers is that it is seen as the more professional email service. For those in the business world, such a reputation is very important.