How gmail send mail
Here's a high-level overview of how Gmail sends an email:
Step 1: User Composes Email
- A user composes an email using the Gmail web interface, mobile app, or desktop client.
- The user enters the recipient's email address, subject, and message body.
- The user clicks the "Send" button.
Step 2: Email Processing
- Gmail's servers receive the email composition request and process it.
- Gmail's servers perform various checks, such as:
- Validating the recipient's email address.
- Checking the user's account settings (e.g., spam filters, forwarding rules).
- Encrypting the email (if necessary).
- Gmail's servers store the email in a temporary queue.
Step 3: Email Routing
- Gmail's servers use a routing algorithm to determine the best path to send the email.
- The algorithm takes into account factors such as:
- The recipient's location.
- The sender's location.
- Network congestion.
- Email server availability.
- Gmail's servers select a suitable email server to send the email to.
Step 4: Email Transmission
- Gmail's servers transmit the email to the selected email server using a protocol such as SMTP (Simple Mail Transfer Protocol).
- The email server receives the email and stores it in its queue.
- The email server attempts to deliver the email to the recipient's email server.
Step 5: Email Delivery
- The recipient's email server receives the email and stores it in its queue.
- The email server attempts to deliver the email to the recipient's email client (e.g., Gmail, Outlook, Yahoo).
- The recipient's email client receives the email and displays it in their inbox.
Step 6: Email Storage
- The recipient's email client stores the email in their email account.
- The email is stored on the recipient's email server or in the cloud (e.g., Gmail's servers).
Additional Steps
- Gmail's servers may perform additional checks, such as:
- Spam filtering.
- Virus scanning.
- Content filtering.
- Gmail's servers may also store a copy of the email in their own servers for backup and archiving purposes.
This is a simplified overview of the process. Gmail's actual implementation may involve additional steps, protocols, and technologies to ensure reliable and secure email delivery.