1. Enter these data.

• Gmail SMTP server address: smtp.gmail.com
• Gmail SMTP username: full Gmail address (e.g. username@gmail.com)
• Gmail SMTP password: Gmail password
• Gmail SMTP port (TLS): 587
• Gmail SMTP port (SSL): 465
• Gmail SMTP TLS/SSL required: yes

2. Turn on Less secure app access.

• Open google account settings.
• Click Security on the left pane.
• Turn on Less secure app access.

Note: Turning this on make your  account is vulnerable.