Smtp settings is a much needed settings you need to with the cms, without setup your smtp and google captcha none of website form will work.

to set your own smtp settings manually, open “@core > .env” file and change blow settings

MAIL_DRIVER=smtp
MAIL_HOST=YOUR_SMTP_HOST
MAIL_PORT=YOUR_SMTP_PORT
MAIL_USERNAME=YOUR_SMTP_USERNAME_OR_EMAIL
MAIL_PASSWORD=YOUR_SMTP_USER_PASSWORD
MAIL_ENCRYPTION=SMTP_ENCRYPTION

you have to set all of these field in smtp settings with your proper info

• Smtp Mailer: set one from those as your smtp mailer or you can say smtp driver

SMTP

• Mailgum

• SendMail

• PostMark

• Smtp Mail Host: enter you smtp mail host

• Smtp Mail Port: select your smtp mail port from list

587

• 465

• 2525

• Smtp Mail Username: enter your smtp username or webmail address

• Smtp Mail Password: enter your smtp password or webmail password

• Smtp Mail Encryption: select smtp encryption type

SSL

• TLS

• None

that's all from your smtp setup.