Can you see from where the mail was sent

You're referring to the IP address of the sender!

Yes, when you receive an email, the email server that sent the email typically includes the IP address of the sender's email server in the email headers. This IP address is usually in the format of xxx.xxx.xxx.xxx, where each xxx is a number between 0 and 255.

The IP address can be used to identify the location of the sender's email server, which can be useful for tracking down spam or phishing emails. However, it's important to note that IP addresses can be spoofed, which means that a malicious sender can fake their IP address to make it appear as if they're sending the email from a different location.

Here's an example of what an email header might look like:

Received: from [192.0.2.1] (unknown [192.0.2.1])
    by mx.google.com with ESMTPS id 1234567890
    (version=TLS1_2 cipher=ECDHE-ECDSA-AES256-GCM-SHA384 bits=256/256)
    id 1sdfghjkl;
    Wed, 12 Jan 2022 14:30:00 -0800 (PST)

In this example, the IP address of the sender's email server is 192.0.2.1. However, as mentioned earlier, this IP address can be spoofed, so it's not always reliable.

It's also worth noting that some email providers, such as Gmail, may not display the IP address of the sender in the email headers. Instead, they may use other methods to track the sender's location, such as analyzing the sender's email address and other metadata.