Gmail SMTP Settings: Meaning, Troubleshoot Problems & More

Gmail is a prominent email address service that touched the 1.8 Billion Active Users mark in 2022 worldwide. This email provider is used for outgoing emails, incoming mails, bulk emails, etc. Also, it allows you to create two types of accounts, i.e., a Normal Gmail Account and a G-Suite Account.

Gmail Email Service is a free, secure, interactive, and feature-oriented business communication platform. Moreover, you get the benefits of Gmail SMTP Server. We'll learn more about Gmail SMTP settings and how it works. But first, let's understand what SMTP means.

What is SMTP?

SMTP is also known as Simple Mail Transfer Protocol. Mail Servers use this email protocol to send outgoing emails to their email clients on the Internet. The virtual communication between email clients and accounts is entirely based on Email Protocols. As a result, these protocols organize and handle sending Normal or Business Emails via SMTP Server.

Therefore, you can only communicate on Gmail when the server establishes secure SMTP connections. The functionality allows simultaneous connections and successful message sending from Email Server. Today, Google Workspace also mandates users to connect SMTP for using it on Gmail. Let's learn more about it.

What does Gmail SMTP Server mean?

Users can access SMTP Server for their Gmail to manage Transactional Emails. So, you can use Gmail's outgoing mail service to send emails from your account to mail applications and email clients. Examples of mail applications are Mac Mail, Thunderbird, and Outlook.

As mentioned earlier, according to Google Workspace protocols, connecting Gmail with an SMTP server is compulsory to use its features. Otherwise, you cannot connect to Google Workspace authenticated, Gmail, or send messages if you don't set up SMTP.

In addition, an SMTP port connects an Email platform to a server. The assigned ports for Gmail are 465 and 587.

Default Domain Email Name for SMTP is

Now, let's understand what Gmail SMTP Server Settings mean.

What does Gmail SMTP Server Settings mean?

Several email settings allow you to use SMTP Server for your Gmail Address.

Moreover, the feature enables users to send emails through Gmail's Domain Email. However, you must create a free account with Gmail to access SMTP.

Following are a few SMTP Gmail Security Settings:

  • SMTP Server Address (qualified domain):
  • Username: Type your professional email address. For example,
  • Password: Enter your professional email address's password in the password field.
  • Port number: Input "587" along with TLS
  • Optional port number: Input "465" along with SSL.
  • Internet protocol: Enter dynamic IPs as mentioned in the settings window.
  • Outgoing email sending limit: Users must register with a G-Suite account on Gmail and enter their relevant account credentials. Consequently, they can send over 10,000 emails every day to the recipients.

Let's look at Gmail's SMTP Setup Settings.

Step 1: Check that IMAP is turned on

  • First, open Gmail on your device.
  • Tap on Settings at the top right corner. Here you can see all your mail settings.
  • Select the "Forwarding and POP/IMAP" tab.
  • Click on Enable IMAP in the IMAP Gmail Settings section.
  • Select Save Changes.

Step 2: Change SMTP Settings in Email Client

  • IMAP: Search

Requires SSL: Yes

Port: 993

  • SMTP option:

Requires SSL: Yes; else, TLS

SSL Port: 465

TLS Port: 587

Requires authentication: Yes

  • Enter your full name for security reasons.
  • Enter the account name, i.e., email address
  • Enter your strong password. (Avoid setting up weak passwords or typing the wrong password)

Go to IMAP Gmail Settings for more information about IMAP Setup.

Noteworthy point: Ensure you are not exceeding the IMAP downloads data limit above 2500 MB and 500 MB for uploads. Otherwise, you will be locked out of your account according to IMAP's security methods. Additionally, break your download and upload limit into specific numbers if you use a single IMAP account on various devices.

Gmail SMTP Setting configuration

Step 1: Click on settings in your Gmail.

Step 2: Tap on "Forwarding and POP/IMAP Settings."

Step 3: Toggle the IMAP section to "Enable IMAP."

Step 4: Tap on "Emails" present on Accredible Dashboard.

Step 5: Select SMTP Overrides in the left-side pop-up window.

Step 6: Users must check that their authentication username matches their email address. You don't have to worry if your two-step verification is On.

Step 7: Now, you must enter the section that appears on the screen appropriately.

  • Outgoing server:
  • Encryption: SSL or TLS
  • Port: 465 for SSL and 587 for TLS
  • Authentication: Enter the valid SMTP Authentication, e.g., Base56 encoded

Step 8: Finally, save all the SMTP authentication changes. You can check if it works properly by sending a test email to yourself.

Note: Always update your password in the SMTP Service Settings to prevent outgoing or incoming mail errors. Repeat similar steps and update the password in SMTP Overrides.

Now, let's understand the multi-factor authentication SMTP settings configuration.

Multi-factor authentication SMTP Settings configuration

Users having Multi-factor Authentication on their Google accounts must follow the below-mentioned steps.

Step 1: Launch Google Account Settings Page.

Step 2: Tap on "Security" in the left-side drop-down menu.

Step 3: Click on "Signing in to Google" inside the security settings.

Step 4: Tap on "App Passwords" because it helps you create a new password.

Step 5: Enter your email address.

Step 6: Click on the dropdown menu and tap "Mail" for the app. Select Other for the device.

Step 7: Enter "Accredible" for the custom device.

Step 8: Tap on "Generate."

Step 9: As a result, it generates a new password. Copy this newly-generated password.

Step 10: Open "Accredible SMTP Settings" in your Gmail and paste the newly-generated password in the Password Field.

Step 11: Save all the changes and click "Send Test Email" to test if your SMTP is working adequately.

Note: Your email deliverability can decrease if you exceed the email sending limit in 24 hours. For example, SMTP Overrides allows you to send only 10,000 outbound emails in 24 hours. Your request will time out if you exceed the 10,000 limits.

SMTP is assigned to send outbound mail via mail servers. Nevertheless, you must sign in with POP3 or IMAP to receive incoming emails on your Gmail account.

Now, let's glance at some problems that may occur while you set up SMTP on Gmail and how to troubleshoot it.

Troubleshoot problems

Unable to sign in to email client

You must know you are facing email client issues if you encounter the below-mentioned errors:

  • "Username not accepted."
  • "Password not accepted."
  • "Invalid Credentials."

Troubleshoot this problem through the following mentioned steps:

Check Password

Ensure that you have entered the correct password if you face these errors. Or else, try to follow this troubleshooting method.

  • Update: Update the Email Client and ensure you are using the newest version.
  • Employ App Password: Sign in with your app password if you are using 2-step verification.
  • Prevent using insecure apps: Several apps in your device may not provide a secure connection to your Email Client. Therefore, you must rely on two-factor authentication, i.e., 2-step verification. It prevents insecure apps from accessing your Gmail.
  • Re-enter password: Enter your reset password on your Gmail Account.
  • Repeat login credentials: Enter your Gmail account's login credentials once again to access the email client.
  • Only sign in on Gmail: Sometimes, signing on the third-party email client may show an error because the server is insecure. So, only sign in to your email client via the Gmail app.

Troubleshoot SMTP errors through these methods. Now, we'll look at some methods to enhance your Gmail's SMTP security.

How to enhance SMTP security?

Third-party apps may send suspicious emails or block your SMTP server. Consequently, your request to send emails gets timed out frequently.

Here are the steps to enhance SMTP security:

Method 1: Toggle the "Less Secure Apps" button in your Gmail settings.

Method 2: Turn on Two-Step Verification in your Gmail. It restricts unknown access to your Gmail account. Also, it enhances SMTP security because no one can interrupt communication between servers. It also disables less secure apps causing malfunction in your SMTP.


The SMTP allows you to set up SMTP Server Settings in several Email Clients, e.g., Outlook, Mac Mail, Gmail, and Thunderbird. Always log in with to access Gmail SMTP Server Settings.

The Simple Mail Transfer Protocol is used as an outgoing server where you can send emails between servers. You must enable IMAP or POP3 in Gmail's control panel, allowing you to receive emails.

So, set up SMTP in Google Workspace Mail to establish communication between client and recipient. The most significant aspect of SMTP is that it is free, and anyone worldwide can access email from devices. All you need to do is log in with your correct details.


1. What are Gmail SMTP 587 and 465?

Answer: SMTP requires TLS or SSL during the mail configuration process. So, Port 587 and 465 are assigned to Gmail, which you use while setting up Gmail SMTP Server. Type 587 for TLS. Similarly, SSL uses Port 465.

2. How to solve the outgoing email message server problem?

Answer: Follow the below steps for the same:

  • Click on the settings option in your email app.
  • Find SMTP Server and click on its settings.
  • Switch the outgoing port from 26 to 587.
  • Saves all the changes to solve this problem.

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