Saved from https://airtable.com/marketplace/scrWNTVvcQV0kyvHS/validate-emails?ref=blog.airtable.com&_gl=1*161p7ma*_ga*NTAxMzYxNDIxLjE2ODMyNzc1Nzg.*_ga_VJY8J9RFZM*MTY5NTUxODAyMy4yMi4xLjE2OTU1MTg2MTUuNTkuMC4w

Validate Emails.js

let settings = input.config({    title: "Validate emails",    description: "This script will list all invalid emails for a field you pick.",    items: [        input.config.table("table", { label: "Table" }),        input.config.field("field", {            parentTable: "table",            label: "Email field",        }),    ],});
let { table, field } = settings;
// To validate a string of text we need to use a regular expression.// Regular expressions are complex — read more about them here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions// This regular expression checks to see if an email address is in the correct format.let regexp = /[A-z0-9.+-_]+@[A-z0-9-]+\.[A-z]+/g;
// Now let's grab all of the records from the table the user selected by calling the selectRecordsAsync method.// We only need the cell values in the selected field, so we'll specify that with the fields argument.let queryResult = await table.selectRecordsAsync({    fields: [field],});
// Before we move on, let's create an empty array that can hold onto the validation results that we'll need to display later.let results = [];
// With the records ready to check and our regular expression defined, we can use a for loop to loop through every// record and check if the email address is valid.for (let record of queryResult.records) {    // Let's first grab the primary field for identification purposes and store it in a variable.    let name = record.name;    // Now we'll do the same for the contents of the field we want to validate. If the cell is empty, getCellValue returns null.    let cellValue = record.getCellValue(field);    if (typeof cellValue !== "string") continue;
    let validation;    if (cellValue) {        // If the cell value exists, we'll use the match method to validate it against our regular expression.        validation = cellValue.match(regexp);    } else {        // If the cell value does not exist, we'll treat it as invalid.        validation = null;    }
    let resultText;    if (validation === null) {        let result = {            Record: name,            "Cell value": cellValue,        };        // Push invalid results on our results array.        results.push(result);    }}
if (results.length === 0) {    output.text(        `No invalid emails found. (${queryResult.records.length} records validated)`    );} else {    output.text(        `${results.length} invalid emails found. (${queryResult.records.length} records validated)`    );    // Show all invalid emails    output.table(results);}