Earlyface

Steps to send a WhatsApp conversation by mail
Below, we list what you have to do to mail a backup of a chat. Doing this has no danger since neither the content on the device is erased nor the stability of the messaging application put at risk. Therefore, the processes indicated are completely innocuous

Run the WhatsApp application on your device
Now access the Settings using the icon with three points at the top right of the application.
Select the Chats option and then click on the section called Chat history to send a WhatsApp conversation by mail
You will see four options on the screen that appears, you must choose the one called Export chat and select the conversation in question. A message appears where you can decide if you want to include multimedia files or not
Choose the email client you will use to send a WhatsApp conversation by mail (as you can see, there are other options that can be used to complete the process)
Now the application takes a while to compact everything and attach it to the mail. This depends on the amount of data that has to be handled
Once finished, you simply send the message and you will have finished

As you can see it is very easy to send a WhatsApp conversation by mail and, in addition, the process has no risk whatsoever and can be completed directly from the smartphone on which the messaging application is used.