How could i send mail just by clicking

You're looking for a way to send emails with just a click! There are a few ways to achieve this:

Email Clients: Most email clients, such as Gmail, Outlook, or Yahoo Mail, allow you to compose and send emails with just a few clicks. You can set up your email client to use a keyboard shortcut or a button to quickly compose and send emails.
Email Plugins: Many email clients have plugins or extensions that can simplify the email sending process. For example, you can use the "Send Email" plugin for Gmail or the "Quick Send" plugin for Outlook.
Custom Buttons: You can create custom buttons or shortcuts on your computer or mobile device to quickly send emails. For example, you can use a browser extension like "Send Email" for Chrome or "Quick Send" for Firefox.
APIs and Integrations: If you're a developer, you can use APIs and integrations to send emails programmatically. For example, you can use the Gmail API or the Outlook API to send emails from your application.
Email Automation Tools: There are also email automation tools like Zapier, IFTTT, or Automator that allow you to automate email sending processes. You can set up triggers and actions to send emails based on specific conditions.

Here are some specific examples of how you can send emails with just a click:

Gmail: You can use the "Send Email" plugin for Gmail to quickly compose and send emails. You can also use keyboard shortcuts like "c" to compose a new email and "s" to send it.
Outlook: You can use the "Quick Send" plugin for Outlook to quickly compose and send emails. You can also use keyboard shortcuts like "c" to compose a new email and "s" to send it.
Browser Extensions: You can use browser extensions like "Send Email" for Chrome or "Quick Send" for Firefox to quickly compose and send emails.
Custom Buttons: You can create custom buttons on your computer or mobile device to quickly send emails. For example, you can use a browser extension like "Send Email" for Chrome to create a custom button.