EmailValidator4J

Simple RFC compliant EmailValidator for Java.

Suported RFCs

RFC 5321, 5322, 6530, 6531, 6532.

Install it!

EmailValidator4j is available on JCenter!!!

dependencies {
    compile 'egulias:EmailValidator4J:1.0.0'
}

<dependency>
    <groupId>egulias</groupId>
    <artifactId>EmailValidator4J</artifactId>
    <version>1.0.0</version>
    <type>jar</type>
    <classifier>sources</classifier>
</dependency>

Why not using ANTLR

Because you don't want to download internet to validate an email.

Getting Started

import emailvalidator4j.EmailValidator

public class ValidateEmail {
    public static void main (String[] args) {
        EmailValidator validator = new EmailValidator();
        if (validator->isValid(args[0]) {
            System.out.println("Valid email");
        } else {
            System.out.println("Invalid email");
        }
    }
}

Validation Strategies

The library comes with an extension point to allow for custom validations.

Validation strategies should implement emailvalidator4j.ValidationStrategy

Out of the box available validators

WarningsNotAllowed

Will make an email invalid if there's at least one Warning

MXRecord

Will check for the existence of a Mail eXchange record on the host. this makes a dns request

Licence

Released under the MIT License attached with this code.