问题
Configures SMTP on WordPress but test mail not receiving

回答1:
To use Wordpress SMTP mail you, as you've done need to configure some details. In this case these details are:
Mail details
- From Email - the email address you want to send emails from - email@yourdomain.com for example;
- From Name - the name that your emails will be received from;
- SMTP Host - the hostname for your SMTP server;
- SMTP Port - the port your server works on;
- Encryption - if you have SSL/TLS encryption available for that hostname, select it here;
- Authentication - check if your SMTP server requires authentication;
- Username - the username for your SMTP server;
- Password - the password for your SMTP server;
来源:https://stackoverflow.com/questions/43799193/smtp-configuration-on-wordpress