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🧑‍🔧How to Fix "Could not Authenticate" Error in SMTP/IMAP
🧑‍🔧How to Fix "Could not Authenticate" Error in SMTP/IMAP

Fixing "Could not Authenticate" Error in SMTP/IMAP

Naitik Chavda avatar
Written by Naitik Chavda
Updated over a week ago

Hello there, Saleshandy users! 👋

Have you ever encountered the dreaded "Could not Authenticate" error when dealing with SMTP or IMAP protocols? 😱

Don't worry; you're not alone! Many of us have faced this puzzling error message that prevents us from accessing our emails smoothly. But fear not; we're here to shed some light on this issue and help you troubleshoot like a pro! 🌟🔧

⚠️ Could Not Authenticate Error

What is "Could not Authenticate Error" in SMTP/IMAP?

First things first, let's break down what this error actually means. When you see the "Could not Authenticate" error in the context of SMTP (Simple Mail Transfer Protocol) or IMAP (Internet Message Access Protocol), it typically indicates a failure to validate your credentials during the authentication process.

In simpler terms, your email client or application is having trouble confirming that you are who you say you are when trying to send or receive emails. 🚫🔑

How to Fix "Could not Authenticate" Error in SMTP/IMAP?

Now that we know what we're dealing with, it's time to roll up our sleeves and get to work on fixing the issue! Here are some handy troubleshooting tips to help you overcome the "Could not Authenticate" error:

1️⃣ Verify Your Login Credentials

You might have entered the wrong email credentials. Double-check that you've entered the correct email address and password. It's easy to mistype or forget a character, so take a moment to ensure accuracy.

  • In most cases, the Email address and Username should be the same.

  • Use the same password that you use while logging into your email inbox.

2️⃣ Confirm Server Settings

Make sure you have the correct server settings for your email provider.

These include the SMTP/IMAP server addresses, ports, and SSL/TLS settings. Refer to your email provider's documentation or contact their support for assistance.

Generic port numbers with encryption type for SMTP: 25 (Encryption as "None"), 465 (SSL/TLS), 587 (TLS/None)

Generic port numbers with encryption type for IMAP: 143 (SSL/TLS), 993 (SSL/TLS)

3️⃣ Resolving SMTP Authentication Challenges with Multi-Factor Authentication

SMTP connection can't be established if you've enabled multi-factor authentication for your email account; it's time to generate an App Password. App Password will allow SalesHandy to seamlessly connect to your email account via the SMTP method. To learn more about How to generate an App Password, Click Here.

⚠️Important: Once you've generated the App Password, you'll use it when connecting your email account to SalesHandy.

The process varies depending on your email provider, so let's explore how to generate app passwords for some popular providers:


To learn more on How to generate an App Password in Gmail: How to Generate an App Password in Gmail.

Yahoo Mail

Learn how to generate an App Password in Yahoo: How to Generate an App Password in Yahoo Mail.

Zoho Mail

If you're using Zoho Mail, follow the instructions in this article to generate an app password: How to Generate an App Password in Zoho Mail.

Yandex Mail

Yandex Mail users can generate app-specific passwords by following the steps outlined in this article: How to Generate an App Password in Yandex Mail.

4️⃣ SMTP connection disabled by your Email Service Provider(ESP).

In rare cases, your email service provider may have the SMTP connection disabled. If you're unable to connect via the SMTP method even after generating an app password, it's time to reach out to your email service provider for assistance.

Contact their support team and request them to enable the SMTP connection for your account. They will guide you through the necessary steps to get you up and running smoothly.

Mission accomplished; you've successfully Fixed "Could Not Authenticate" Error. 👏

Wishing you a delightful experience! ❤️

Happy Selling. 🤝

Warmest regards,

Saleshandy Team

👉 Next Steps

Check out the below article If you want to know more about

💡 Tip

Don't hesitate to reach out if you have any questions. We're available on chat and ready to provide you with prompt assistance. 🤗

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