The second reason really has nothing to do with the of the email address, but it often gets conflated.If you require a user to confirm their email address, why don’t you just let them enter whatever they want and let fake emails bounce?
Or maybe you will find a regular expression that looks something like .You can probably even find a library in your language of choice that implements a full, RFC 2822 compliant parser or wraps that unreadable 200 line regex.Below is a quick start to using one of the most methods to achieve effective email address syntax validation using jquery email validation.This guide is for anyone who works with designing and deploying web sites and needs to ensure that email addresses input by users are correctly formatted.How sure are you that your complex validator is not going to have any false positives? Especially in the early stages of a product, every user counts when you are trying to learn about how real people use your software.
Don’t lose a potential customer in order to block a few spammers (if they really want to get in, they will just make tons of real email addresses anyways).
i Contact prides itself on being one of the most reliable email marketing service providers in the industry with an outstanding deliverability rate and knowledgeable service team members you can count on for results. Result == 'valid' // Instantiate client Neverbounce Client neverbounce Client = Neverbounce Client Factory.create("api_key"); // Verify email Single Check Response single Check Response = neverbounce Client .prepare Single Check Request() Email("[email protected]") .build() .execute(); if(single Check Result() == 'valid') // Instantiate SDK var sdk = new Never Bounce Sdk("api_key"); // Create request model var model = new Single Request Model(); model.email = "[email protected]"; // Verify email Single Response Model resp = sdk.
import neverbounce_sdk # Create sdk client client = neverbounce_sdk.client(api_key='api_key') # Verify email verification = client.single_verify(email='[email protected]') if verification['result'] == 'valid': # Do stuffrequire "neverbounce" # Instantiate client client = Never Bounce:: API:: Client.new(api_key: "api_key") # Verify email resp = client.single_check(email: "[email protected]") if resp.result == 'valid'?
Both of these solutions are wrong and a waste of development hours. Just check for the existence of I think trying to prevent spammy signups is a pre-mature optimization, but let’s put that aside for now.
Trying to prevent fake email addresses from getting into your app harms legitimate users. Yep, that is a valid email address according to the spec.
This negatively effects your business in countless ways: Life’s too short to be uncomfortable.