15 Open-source Email Validation Projects for Email Marketeers

15 Open-source Email Validation Projects for Email Marketeers
Photo by Kaleidico / Unsplash

Email marketing is a digital marketing strategy that involves sending commercial messages to a group of individuals through email. It is a cost-effective and efficient way for businesses to communicate with their target audience, promote products or services, build customer relationships, and drive conversions.

Why it is required to validate Email addresses in Bulk?

Validating email addresses in bulk is important for email marketers for several reasons.

Firstly, it helps maintain a clean and accurate email list by identifying and removing invalid or non-existent email addresses. This ensures that marketing efforts are focused on real and engaged recipients, maximizing the chances of successful delivery and engagement.

Secondly, validating email addresses in bulk helps improve deliverability rates. When numerous invalid or undeliverable email addresses are present in an email list, it can negatively impact the sender's reputation and lead to emails being flagged as spam. By validating email addresses in bulk, marketers can reduce bounce rates, improve sender reputation, and increase the likelihood of emails reaching the recipients' inboxes.

Thirdly, validating email addresses in bulk saves time and resources. Sending emails to invalid or inactive email addresses is a waste of marketing efforts and resources. By validating email addresses in bulk before initiating email campaigns, marketers can ensure that their messages reach a larger and more responsive audience, resulting in higher conversion rates and a better return on investment.

Overall, email marketing is an effective marketing strategy, and validating email addresses in bulk is crucial for maintaining a high-quality email list, improving deliverability rates, and optimizing marketing efforts for maximum impact.

What is Email address Validation?

Email address validation is the process of verifying the authenticity and deliverability of an email address. It ensures that the email address provided by a user is valid and can receive messages. Email marketeers heavily rely on email address validation to maintain a high-quality email list and improve the effectiveness of their email marketing campaigns.

Validating Email Address Syntax

Validating the syntax of an email address involves checking if the address conforms to the standard format, which includes having a username, an @ symbol, and a domain. Email address syntax validation is important because it helps ensure that the email addresses collected are correctly formatted and free of any typographical errors or mistakes.

Validating email address syntax is crucial for email marketeers because it helps prevent issues that may arise from incorrect email addresses. By verifying the syntax, marketeers can identify and correct any typos or misspellings that could lead to undeliverable emails. It also helps in filtering out invalid email addresses, ensuring that only properly formatted addresses are added to the email list.

By validating email address syntax, marketeers can improve the overall quality of their email list and increase the chances of successful email delivery. It helps in maintaining a clean and accurate subscriber base, reducing bounce rates, and improving the overall effectiveness of email marketing campaigns.

Validating Email Address MX Records

One aspect of email address validation is validating MX records and servers. This involves checking the domain's MX (Mail Exchange) records to ensure that the domain has a valid mail server to handle incoming emails. By validating MX records, email marketeers can reduce the chances of sending emails to non-existent or inactive email addresses.

Validating Disposable email addresses

Another important aspect is validating disposable emails. Disposable email addresses are temporary email addresses that users create for a short period of time. These addresses are often used to bypass email verification processes or to receive spam. Email marketeers need to validate and filter out disposable email addresses to maintain a clean and engaged subscriber base.

Additionally, email address validation helps email marketeers determine whether an email can be successfully sent or not. By checking the syntax and domain of an email address, marketeers can identify potential issues that may prevent successful delivery, such as typos, misspellings, or non-existent domains.

In summary, email address validation plays a crucial role in email marketing. It ensures the accuracy and deliverability of email addresses, helps maintain a clean and engaged subscriber list, and improves the overall success of email marketing campaigns.

Here, you can find the best open-source solutions to validate email addresses, which can save a huge deal of resources, and time for email marketeers.

1- Reacher

  1. https://reacher.email/
  2. https://github.com/reacherhq/check-if-email-exists

This open-source project allows you to check and validate if email exists without sending any emails. It can be installed as a command-line tool, or as a Docker app easily. The self-hosted Docker setup allows you to access the app via REST-API.

GitHub - reacherhq/check-if-email-exists: Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.
Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend. - GitHub - reacherhq/check-if-email-exists: Check if an email address exists without sendi…

2- Email Verifier

This is a free and open-source Go Lang library that enables developers to include email validations in their Go-based app without sending any emails.

Features

  • Email Address Validation: validates if a string contains a valid email.
  • Email Verification Lookup via SMTP: performs an email verification on the passed email (catchAll detection enabled by default)
  • MX Validation: checks the DNS MX records for the given domain name
  • Misc Validation: including Free email provider check, Role account validation, Disposable emails address (DEA) validation
  • Email Reachability: checks how confident in sending an email to the address.
GitHub - AfterShip/email-verifier: :white_check_mark: A Go library for email verification without sending any emails.
:white_check_mark: A Go library for email verification without sending any emails. - GitHub - AfterShip/email-verifier: :white_check_mark: A Go library for email verification without sending any em…

3- TruMail

TrueMail is an open-source configurable framework-agnostic plain Ruby email validator. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.

Email verification can be done using the Truemail gem, which validates email addresses through regex pattern, DNS record availability, and SMTP connections. It also allows for auditing the host environment.

TrueMail is also available as a Golang library.

Features

  • Configurable validator, validate only what you need
  • Supporting of internationalized emails (EAI)
  • Whitelist/blacklist validation layers
  • Ability to configure different MX/SMTP validation flows
  • Ability to configure DEA validation flow
  • Simple SMTP debugger
  • Event logger
  • Host auditor tools (helps to detect common host problems interfering to proper email verification)
  • JSON serializers
  • Ability to use the library as independent stateless microservice (Truemail Server)
GitHub - truemail-rb/truemail: 🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.
🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists. - GitHub - truemail-rb/truemai…
GitHub - truemail-rb/truemail-go: 🚀 Configurable Golang 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.
🚀 Configurable Golang 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists. - GitHub - truemail-rb/truemail-go: 🚀 Configurable Go…

4- Mailcat

Mailcat is a Python tool that allows you to find existing email addresses by nickname using API/SMTP checking methods without user notification. It encourages improvement and is designed to make the job easier.

GitHub - sharsil/mailcat: Find existing email addresses by nickname using API/SMTP checking methods without user notification. Please, don’t hesitate to improve cat’s job! 🐱🔎 📬
Find existing email addresses by nickname using API/SMTP checking methods without user notification. Please, don't hesitate to improve cat's job! 🐱🔎 📬 - GitHub - sharsil/mailcat: Find exist…

5- MailChecker

MailChecker is a cross-language email validation tool that validates the format of an email using a regex and checks if the email is not a temporary mail by comparing it to a database of over 55,000 throwable email domains.

It supports Node.js, Python, Client-side JavaScript, GoLang, Python, Ruby, Rust, PHP, Elixir, and Clojure.

GitHub - FGRibreau/mailchecker: :mailbox: Cross-language temporary (disposable/throwaway) email detection library. Covers 55 734+ fake email providers.
:mailbox: Cross-language temporary (disposable/throwaway) email detection library. Covers 55 734+ fake email providers. - GitHub - FGRibreau/mailchecker: :mailbox: Cross-language temporary (disposa…

6- verify_email

verify-email is a python script that efficiently verifies email addresses by checking the domain name, pinging the handler, and performing syntax and MX record checks. It supports caching domain lookups, concurrency with asyncio, and multiprocessing with fast_verify.py.

GitHub - kakshay21/verify_email: verify-email can verify any email address by efficiently checking the domain name and pinging the handler to verify its existence.
verify-email can verify any email address by efficiently checking the domain name and pinging the handler to verify its existence. - GitHub - kakshay21/verify_email: verify-email can verify any ema…

7- email-check

To validate an email address in PHP, it is recommended to send a duplicate opt-in email and verify if the user clicks on the link, confirming the validity of the email address.

GitHub - voku/email-check: :envelope: E-Mail Address Validator (syntax, dns, trash, typo)
:envelope: E-Mail Address Validator (syntax, dns, trash, typo) - GitHub - voku/email-check: :envelope: E-Mail Address Validator (syntax, dns, trash, typo)

8- Disposable Email Domain List

This repository provides a collection of temporary email domains that can be imported into newsletter software to filter and block junk email addresses, such as '10 minute mail', for better email verification.

GitHub - unkn0w/disposable-email-domain-list: List of disposable email domains. You can use it to block fake users on your newsletter.
List of disposable email domains. You can use it to block fake users on your newsletter. - GitHub - unkn0w/disposable-email-domain-list: List of disposable email domains. You can use it to block fa…

9- Business Email Validator

This business email validator service enables you to eliminate free email services during the signup process, allowing you to capture more potential customers for your business.

GitHub - LoginRadius/business-email-validator: Help you to eliminate free email services in signup process to capture more potential customer for your business.
Help you to eliminate free email services in signup process to capture more potential customer for your business. - GitHub - LoginRadius/business-email-validator: Help you to eliminate free email s…

10- email-validator: Validate Email Addresses

The email-validator library is a robust tool for validating email addresses in Python 3.8+. It verifies the syntax of email addresses and optionally checks if the domain is set up to receive email. It provides friendly error messages and supports internationalized domain names and local parts.

Features

  • Validates email addresses for registration, login forms, and user identification.
  • Provides user-friendly error messages in English for failed validation.
  • Optional deliverability check: verifies if the domain name resolves (with the ability to customize DNS resolver and add query caching).
  • Supports internationalized domain names and local parts.
  • Rejects unsafe Unicode characters, outdated email address syntax, special use domain names like @localhost, and domains without a dot by default. This library has a specific approach!
  • Normalizes email addresses, which is crucial for internationalized and quoted-string addresses.
  • Utilizes Python type annotations.
GitHub - JoshData/python-email-validator: A robust email syntax and deliverability validation library for Python.
A robust email syntax and deliverability validation library for Python. - GitHub - JoshData/python-email-validator: A robust email syntax and deliverability validation library for Python.

11- EmailAddressScanner

Email Address Scanner is a free and useful service to detect email address then really exists or not.

GitHub - BaseMax/EmailAddressScanner: Email Address Scanner is a free and useful service to detect email address then really exists or not.
Email Address Scanner is a free and useful service to detect email address then really exists or not. - GitHub - BaseMax/EmailAddressScanner: Email Address Scanner is a free and useful service to d…

12- email-verifier

This is a NPM package that allows users to verify the E-mail entered by the user. It only checks the syntax of the E-mail ID entered by the user. Gives the option to provide different domain names to change the Regex of the validator

GitHub - hookFang/email-verifier: This is a NPM package that allows users to verify the E-mail entered by the user. It only checks the syntax of the E-mail ID entered by the user. Gives the option to provide different domain names to change the Regex of the validator
This is a NPM package that allows users to verify the E-mail entered by the user. It only checks the syntax of the E-mail ID entered by the user. Gives the option to provide different domain names…

13- Company Email Validator

Provides a fast company / work email validator by checking whether the email domain is in the free email provider list. Note: does not check SMTP servers and MX records currently (i.e. doesn't do deep validation).

company-email-validator
Provides a fast company / work email validator by checking whether the email domain is in the free email provider list.. Latest version: 1.1.0, last published: 4 months ago. Start using company-email-validator in your project by running `npm i company-email-validator`. There are no other projects in…

14- Advanced Email Validator

This NPM JavaScript packages allows you to verify email address checking MX records, and SMTP connection, check for disposable email addresses and free email providers.

Features

  • ✅ Check email address validity
  • ✅ Check email address domain validity in domain TLD list
  • ✅ Check email address MX records
  • ✅ Check email address SMTP connection
  • ✅ Check email address disposable or burnable status
  • ✅ Check email address free email provider status

Use-cases

  • Increase delivery rate of email campaigns by removing spam emails
  • Increase email open rate and your marketing IPs reputation
  • Protect your website from spam, bots and fake emails
  • Protect your product signup form from fake emails
  • Protect your website forms from fake emails
  • Protect your self from fraud orders and accounts using fake emails
  • Integrate email address verification into your website forms
  • Integrate email address verification into your backoffice administration and order processing.
@devmehq/email-validator-js
Advanced Email Validation with DNS MX lookup and Mailbox Verification. Latest version: 1.0.16, last published: 7 months ago. Start using @devmehq/email-validator-js in your project by running `npm i @devmehq/email-validator-js`. There is 1 other project in the npm registry using @devmehq/email-valid…

15- Deep Email Validator

Validates email addresses based on regex, common typos, disposable email blacklists, DNS records and SMTP server response.

  • Validates email looks like an email i.e. contains an "@" and a "." to the right of it.
  • Validates common typos e.g. [email protected] using mailcheck.
  • Validates email was not generated by disposable email service using disposable-email-domains.
  • Validates MX records are present on DNS.
  • Validates SMTP server is running.
  • Validates mailbox exists on SMTP server.
  • Native typescript support.

GitHub - mfbx9da4/deep-email-validator: Validates regex, typos, disposable, dns and smtp
Validates regex, typos, disposable, dns and smtp. Contribute to mfbx9da4/deep-email-validator development by creating an account on GitHub.


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