Magento – We’re unable to send the password reset email

From Outside Magento.

If you want to send All Customers Reset Password Email, then below is the code.

//place this before any script you want to calculate time
$time_start = microtime(true);

// MAGENTO START
include('app/bootstrap.php');

use Magento\Framework\App\Bootstrap;
use Magento\Customer\Api\AccountManagementInterface;
use Magento\Customer\Model\AccountManagement;

$bootstrap = Bootstrap::create(BP, $_SERVER);
$objectManager = $bootstrap->getObjectManager();

$state = $objectManager->get('Magento\Framework\App\State');
$state->setAreaCode('frontend');

$_customers = $objectManager->create('Magento\Customer\Api\AccountManagementInterface');
$customerCollection = $objectManager->create('Magento\Customer\Model\ResourceModel\Customer\Collection');
$customerCollection->load();
$i = 0;
foreach ($customerCollection as $customers) {

    $email = $customers->getData('email');

    try {
            $_customers->initiatePasswordReset($email, AccountManagement::EMAIL_RESET);
        } catch (NoSuchEntityException $e) {
            // Do nothing, we don't want anyone to use this action to determine which email accounts are registered.
        } catch (\Exception $exception) {
            echo __('We\'re unable to send the password reset email.');
        }
        echo "<pre>";
        echo $i . " Email :-" . $email . " Mail Sent";
    $i++;
}

echo "<pre>";
echo "Total Customers: " . $i;

$time_end = microtime(true);

//dividing with 60 will give the execution time in minutes other wise seconds
$execution_time = ($time_end - $time_start) / 60;

//execution time of the script
echo "<pre>";
echo 'Total Execution Time:</b> ' . $execution_time . ' Mins';

Hope it helps Magento Community :)

If you are on live server you need to enable sending emails and if you are on local server then you can achieve it by installing some Magento 2 extensions which are working perfectly.

Some of the tested extensions for custom SMTP are listed below:

https://github.com/mageplaza/magento-2-smtp

First you need to send testing mail if it will work then you can go further and if this will not work then you need to debug like store id and area etc do let me know if you are facing the issue.