Magento2 – User Registration Email

You could possibly add what one would call a 'bot trap' into your registration page. You see, bots don't have eyes. And without eyes the only way to fill out a form is via field automation. Therefore, they must 'feel' for the fields within a form. So, how do you trick a blind robot? You create an invisible field called something official sounding like 'nickname' and then filter your applications thusly.

How does this play out in the real world? A person, being non-mechanical and (hopefully) having at least one optical field searching mechanism will never find (nor click, nor type into) this invisible field. However, robots, being very much the opposite will happily fill out every single field on the page.

In the backend just reject all applications with this field filled in.

:D

Customize Email Template, Transactional Email:

• Step 1: Load the Default Template
• Step 2: Fill out the Template Information
• Step 3: Preview the Template
• Step 4: Apply the new Template

Step 1: Load the Default Template

• On the Admin Panel, Marketing > Communications > Email Templates.
• Click on Add New Template,Choose the types of the Template: Header, Footer, or Message Templates.
• Click on Load Template, the corresponding format will appear.

Step 2: Fill out the Template Information

• Name for the new template in the Template Name field.
• Insert the Template Subject for the organization of the templates. The list of templates can be sorted and filtered by the Subject column.

• Customize the HTML as you need in the Template Content box.
• Click on Insert Variable to insert a variable in the Template Content box.

With the inserted variable, you can custom it directly into the template.

• If you want to declare any CSS, enter the styles in the Template Styles box.

Step 3: Preview the Template

• To ensure that the template is applied correctly as you expect, click on Preview Template to adjust if need.

• Save Template to complete.

Each completed new template is auto-updated in the list of available Email templates.

Step 4: Apply the new Template

Footer/ Header Template

• Go to Magento Admin, follow the path: Store > Configuration > Customers > Customer Configuration

Basing on where the template is placed to open the relevant option. For example, the template belongs to Create New Account Options:

• Set the new template for Welcome Email.

• Save Config to complete

Refrence

Hope This will help :)