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Solution:
You have used wrong MAIL_HOST for gmail, please use the following configuration, and make use that your Gmail has less secured app access enabled.
MAIL_DRIVER=SMTP
MAIL_HOST=smtp.googlemail.com
MAIL_PORT=465
MAIL_USERNAME=ENTER_YOUR_EMAIL_ADDRESS(GMAIL)
MAIL_PASSWORD=ENTER_YOUR_GMAIL_PASSWORD
MAIL_ENCRYPTION=SSL
To enable less secured app:
Login to your Google Email Account and click on Google Account Button. This button is display when you click on the profile picture in your Gmail Dashboard as shown.
Once you are on My Account Page then click on Security and scroll down to the bottom and you will find ???Less secure app access??� settings. Click on the radio button to set it ON.
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