Secure SMTP (SMTPs) allows you to safely send your email even on non-secure networks. This is very important in order to protect your privacy and account security.
Mac Mail offers excellent SMTPs support and the following article describes how to enable it.
Even if you are using a different webhost the instructions are similar.
The most important thing is to find out which SMTPs server to use. If you are a SiteGround client, go to yourdomain.com/cpanel.
You will be redirected to something like https://secureXXX.sgcpanel.com:2083. This means that your SMTPs server is secureXXX.sgcpanel.com.
It is essential to use exactly this server name because our SSL is issued for *.sgcpanel.com. If you connect by SMTPs with any other server name, there will be an SSL warning that the certificate does not match the host. This warning is not fatal but it will pop up you every time you open your email client.
Once you have found out your SMTPs server name, open Mail and go to Mail > Preferences. There find your email account, click on it and follow the steps below:
1. In the Account Information tab click on the drop-down menu for Outgoing Mail Server (SMTP): and select Edit Server List…; then click the + sign to add a new outgoing server. Once you do this, a "Double-click to enter" message will appear in the Server Name field. Double click on it and add your SMTPs server there.
2. Once you have added the SMTPs server, click once on it to select it and then click on the Advanced tab. From there check Use Secure Socket Layer (SSL).
3. To apply the changes click ‘OK‘ at the bottom.
From this point on you will be sending your email securely using SMTPs.
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