By default, when using the "mailto" function in Webflow, it opens the user's default email client in a new tab along with an empty window. However, there is a workaround to prevent the new empty tab from opening.
To achieve this, you can follow these steps:
1. Add the "mailto" link to your desired element in Webflow. For example, you can create a button and set the link to "mailto:example@example.com".
2. After adding the link, go to the Navigator panel in the right-hand sidebar of the Webflow Designer and select the element that contains the "mailto" link.
3. With the element selected, click on the "Settings" gear icon at the top of the Navigator panel to access the element's settings.
4. In the element's settings, scroll down to the "Attributes" section and click the "+ Add Attribute" button.
5. In the attribute field, enter "target" (without quotes) and in the value field, enter "_self" (without quotes). This attribute-value combination tells the browser to open the link in the same tab instead of a new tab.
6. Save and publish your Webflow site to see the changes in action.
By adding the "target" attribute with the value of "_self" to the element containing the "mailto" link, you are instructing the browser to open the email client in the same tab instead of opening a new tab. As a result, the empty tab that would typically appear will be prevented.
It's important to note that modifying the attributes of an element in Webflow may require an understanding of HTML and web development concepts. If you're not comfortable editing attributes manually, you can seek assistance from a developer or Webflow expert to implement this solution.