After completing the web hosting of your domain, you can create an email account by the following.
For web hosting, please refer this FAQ.
1. Log in to Tsukaeru.Net Control Panel.
2. Click the [Domains] tab, and select the domain for which you want to create email accounts.
3. Click "WEBHOSTING PLESK MAIL".
4. Click "ADD NEW MAILBOX". 
After creating an email account, click on the created email account.
As shown below, you can make various settings for your email account on the screen that appears.
Please refer here about account settings for mail clients such as Outlook. (###英語版FAQへのリンクに要修正###)
◆ About spf setting
To configure spf setting for your domain, we recommend the following setting.
v=spf1 include:spf.nospamcloud.com ~all