For sending e-mails via G-Mail e-mail servers, the following data should be entered:
- select "Settings" and then "Connections",
- for "Select a connection" select ''E-mail'' and click on "Add",
- enter your name and surname, your e-mail address, and password. This password is the one typically used for logging in to G-Mail.
- enter SMTP server.
- at the end click on ''Save''

When data is saved, adding a connection to Google services and your account is required.
- In "Select a connection" field - select "Google" and then click on "Add",

When the "Google" tab is added, click on it and then click on the "Connect" button

A dialog for selecting a Google user account will open

Select to which user's account connection should be established and an additional dialog will open (depending on the security settings of a user account in Google)

click on "Advanced'' in order to connect despite the warning

and then "Go to metakocka.si"
a new dialog will open, where the connection should be confirmed

the connection will be established once it is confirmed
an e-mail will be sent to the connected G-Mail user account confirming the successful connection

If sending e-mails from MetaKocka is still blocked, logging in to your Google account and visiting the following webpage is required:
https://myaccount.google.com/lesssecureapps?pli=1
There, the access to less secure apps should be authorized