Google blocks smtp in react-native - react-native

Question

I am having trouble with google smtp for sending emails from my app.
The app works fine in my mobile and I am able to send emails without any issue.
But When I publish the app and people start using it, I get a security email from google telling me that it has blocked a login try.
I have even enabled less secure login.
Is there any other settings I should enable?
Here is my code for sending emails
import RNSmtpMailer from 'react-native-smtp-mailer'
async sendEmail(email: string, htmlBody: string, subject: string) {
try {
var settings = await this.getAppSettings();
if (!settings)
throw "Could not find the smtp settings"
var success = await RNSmtpMailer.sendMail({
mailhost: settings.smtp,
port: settings.port,
ssl: true, // optional. if false, then TLS is enabled. Its true by default in android. In iOS TLS/SSL is determined automatically, and this field doesn't affect anything
username: settings.email,
password: settings.password,
fromName: "NovelManager", // optional
replyTo: undefined, // optional
recipients: email,
bcc: [], // optional
subject: subject,
htmlBody: htmlBody,
attachmentPaths: [], // optional
attachmentNames: [], // required in android, these are renames of original files. in ios filenames will be same as specified in path. In a ios-only application, no need to define it
});
return true;
} catch (error) {
return false;
}
}
and here is the smtp settings
{
smtp: "smtp.gmail.com",
port: "465",
email: "test#gmail.com", // not the real email
password: "test"
}

Answer 1

Ok at last I found a solution, And that is using app password instead of simple password.
I am posting the solution here incase anyone is intressted.