SMTP Error: Could not authenticate. When connecting to Gmail

SMTP Error: Could not authenticate.
SMTP Error: Could not authenticate.

Today, we are with you, by fixing a common error in Gmail, which had caused problems for many of you, the native wordpress users. We try to answer the most common problems of native wordpress users in various articles so that users can get their answers faster and that we do not have to explain one topic to each person many times. Most friends who use Gmail to send their email newsletters and connect to email marketing services facing SMTP error: Could not authenticate.

The SMTP protocol is the interface between email and other applications that makes sending email easy. But sometimes when you work with this protocol you get errors that you have to fix. Here are some ways you can fix them.

SMTP Error: Could not authenticate.

The Newsletter plugin is used to send newsletters on the site. You can send group emails to your site users through them. This is a great way to grow your online business. You can easily market your site without paying much and attract a large audience to your site and increase your sales.

Therefore, due to the many features that Newsletter provides to its users, so many users use it. For you to work well with this plugin, it is better to read the articles on the site about My Mail and also make sure that you first watch the video tutorial on working with WP Newsletter.

Naturally, each plugin has its own problems and you should be able to fix them so that your site is not disrupted. SMTP Error: Could not authenticate is also one of the errors that may appear for you in the wordpress Newsletter plugin or any other plugin for various reasons.

There are several ways to fix this error, and here are three commonly used methods. So join us so that you can fix this error or if you encounter this error in the future, you can easily fix it.

Now we want to see how to fix this error. Step by step, do the following:

Change your Gmail password to numbers

The first way we suggest you is to change your password. So first it is better to change your Gmail password. When changing the password, be sure to use numbers to minimize the error when entering the password in the newsletter plugin.

Also, keep in mind that passwords are very important and you need to be very careful when encrypting your Gmail that hackers can not access your Gmail. Here you have to use a simple password to resolve the error.

Disable Gmail 2-Step Login

Log in to Gmail with which you want to send newsletter emails and provide information to the system. Click on your avatar icon at the top right of the Gmail panel. Then click My Account.

Log in to your Google Account
Log in to your Google Account

Then click Sign In and Security.

Security settings in Google
Security settings in Google

Now find the 2 Step Verification option and click on it. Finally, click the Turn Off button to disable the two-step Gmail account login.

Two-step login of Gmail account is one of the good and useful methods that make user accounts more secure. In fact, Google does this for its users to protect Google accounts. But here it is better to do this to reduce the possibility of error.

Open access to low-security Gmail applications and sites

The third way we suggest you fix this error is to leave low-security apps and sites accessing your account. You must do this to fix your error. Log in to your email again to do this. (This means the email you want to send to the Newsletter plugin.)

Now go to the settings page for low security software.

And activate the button for this setting to turn blue.

Now your mail can send your emails without any problem.

But using these methods may not solve your problem. In this case, you need to contact your hosting provider. So if the emails are still not sent, ask your host to open ports 465 and 25 of your server.

We hope you have been able to fix this error easily using this tutorial.

be successful and victorious.

Do you have any question? Ask us

  1. U28063 ۲۵ آذر ۱۳۹۹

    HI THANK REZA