Sending Invitations via 1KA SMTP E-mail System, via Gmail Server or Gmail User Account

To use the 1KA e-mail invitation system, an active 3KA package is required. Gmail SMTP can be used by anyone with a Gmail account, but there are some limitations, especially with the number of emails sent daily. More about it is available here.

In the 'PUBLISH' - 'Invitations' tab, you must first enable the system by clicking on the 'Enable 1KA invitation system' button.

It opens up a 'PUBLISH' - 'Invitations' - 'Settings' tab, where you can edit general invitation settings and email server settings. 

For sending email invitations via the SMTP settings of your Gmail email address, follow the instructions below:

  • Sign in to your Google account and check your settings:
    • Make sure you have your IMAP access turned on:
      • Open Gmail on your computer.
      • Click the settings icon in the upper right corner - Show all settings.
      • Click the forward tab and POP/IMAP.
      • In the 'IMAP access' section, select 'Enable IMAP'.
      • Click 'Save changes'.
    • Allow access for less secure applications. Open your Google account and from the menu on the left, select the Security tab --> Access for less secure applications -->Turn on access:
  • Turn on 2-step verification:
    • Open your Google account.
    • In the navigation panel choose Security.
    • Under 'Sign in to Google', select 2-step verification -> Get started.
    • Follow the instructions on the screen.
  • Create a password to access the application:
    • Open your Google account.
    • Select Security.
    • Under 'Sign in to Google', select 'App passwords'. You may need to sign up.
    • At the bottom, select: 'Select app' and then enter the application, select 'Other' -> name as desired (e.g. 1KA) --> Generate.
    • Follow the instructions to enter the password to access the application. The password to access the application is a 16-digit code in the yellow bar on the device.
  • In the 'PUBLISH' - 'Invitations' - 'Settings' tab - 'Email server settings' you must enter the following information:
    • From (name): name and surname
    • From (e-mail): your email address
    • Reply-to: your email address
    • Username: your email address
    • Password: 16-digit code you set as the application access password (Step: Create application access password)
    • Authentication (No/Yes): Yes
    • Encryption (None/SSL/TLS): SSL
    • Port: 465
    • Host:
  • Choose 'Test settings' below. You will receive a test message to your email address:


  • If the test is successful, then save the settings.

Gmail is constantly changing its settings. The instructions for setting up invitations via the Gmail server were made in February 2021, so we advise you to check the current settings before invitation sending.

1KA is free to use for basic users