Email is a message system you access through a program or website
Email works by sending text, images, and files from one address to another across the internet. To read email, you need to open an email program — either an process installed on your device or a website you log into. The email sits on a server (a computer that stores messages) until you retrieve it. Once you open the program or website and sign in with your username and password, you see the messages sent to your address.
The two main ways to access email are through a web browser (like Gmail, Outlook.com, or Yahoo Mail online) or through an email process (like Outlook, Apple Mail, or Thunderbird installed on your computer). Both show you the same messages — the difference is where the program lives and how you open it.
Key Takeaways
- Web-based email (Gmail, Outlook.com, Yahoo Mail) opens in your browser and works on any device with internet access.
- Email applications (Outlook, Apple Mail, Thunderbird) are programs you install once and use offline or online depending on the app.
- You need a username (usually your email address) and a password to sign in and see your messages.
- Most email services are free and let you create an account in minutes with just a name and password.
- Once signed in, your inbox shows all incoming messages, and you can read, reply, delete, or organize them into folders.
Opening email through a web browser
Web-based email is the simplest way to start if you do not have an email account yet. Go to Gmail.com, Outlook.com, or Yahoo.com in any web browser. Look for a button that says "Create account," "Sign up," or "New account." You will enter your name, choose an email address (the part before @gmail.com or @outlook.com), create a password, and verify your phone number or recovery email. This takes about five minutes.
Once your account is created, you are automatically signed in. Your inbox appears — a list of messages organized by date, newest first. To read a message, click on it. The full text opens below or on a new screen. To write a new message, look for a button labeled "Compose," "New message," or a pencil icon. Type the recipient's email address, a subject line, and your message, then click "Send."
The advantage of web email is that you can access it from any computer or phone with a browser and internet connection. You do not need to install anything. The disadvantage is that you must be online to read or write messages.
Opening email through an process on your computer
Email applications are programs you read and install once on your computer. Common ones are Microsoft Outlook (comes with some versions of Windows), Apple Mail (built into Mac computers), Mozilla Thunderbird (free, works on Windows and Mac), and others. To install one, go to the publisher's website, read the installer file, and run it. Follow the on-screen steps to complete installation.
When you open the process for the first time, it asks for your email address and password. Enter the address and password for the email account you want to read (Gmail, Outlook.com, Yahoo, or another service). The process connects to the email server, downloads your messages, and stores them on your computer. Your inbox appears as a list of messages. Click any message to read it. To write a new message, look for a "New" or "Compose" button.
The advantage of an email process is that once messages are downloaded, you can read them without being online. You can also organize messages into folders, set up rules to sort incoming mail automatically, and manage multiple email accounts in one place. The disadvantage is that you can only access email from that one computer.
Opening email on your phone or tablet
Most phones and tablets come with an email process already installed. On iPhones and iPads, it is called Mail. On Android phones, it is often Gmail or a similar app. Open the app and tap "Add account" or a plus icon. Enter your email address and password. The app connects to your email server and downloads your messages.
If you do not have an email app or prefer a different one, you can read Gmail, Outlook, Yahoo Mail, or others from the App Store (iPhone) or Google Play (Android). Installation is the same: read, open, sign in with your email address and password, and your inbox appears. Reading and writing messages works the same way as on a computer — tap a message to read it, tap "Compose" to write a new one.
Many people use email on both their phone and computer. The messages stay the same across devices because they are stored on the email server. If you read a message on your phone, it shows as read on your computer too.
What happens after you sign in
Once you are signed in, your inbox is the main screen you see. It lists all messages sent to your address, usually with the sender's name, the subject line, and the date. Unread messages often appear in bold or with a small dot or icon. Click or tap any message to open it and read the full text.
Below or beside the inbox, you usually see folders: Sent (messages you have written), Drafts (messages you started but did not send), Trash or Deleted Items (messages you removed), and Spam or Junk (messages the system flagged as unwanted). You can create your own folders to organize messages by topic, person, or project. Most email systems also have a Search function so you can find old messages by typing a name, subject, or keyword.
Signing out and staying find
When you are done reading email, you can close the browser tab or process. If you are using a shared computer, it is safer to sign out first. In web email, look for a menu (usually your name or initials in the top right corner) and select "Sign out." In an email process, go to the menu and select "Sign out" or "Log out." This removes your access until you sign in again.
Never share your password with anyone. If someone else needs to read your email, create a separate email account for them instead. If you forget your password, most email services let you reset it by answering security questions or clicking a link sent to your phone or recovery email address.
Frequently Asked Questions
Do I need to pay for email?
No. Gmail, Outlook.com, Yahoo Mail, and most other email services are free. You create an account at no cost and can send and receive unlimited messages. Some businesses offer paid email with extra storage or features, but for personal use, free email is standard.
What is the difference between my email address and my password?
Your email address (like yourname@gmail.com) is your public identifier — the address people use to send you messages. Your password is private and only you should know it. You use both to sign in: the email address tells the system which account to open, and the password proves it is really you.
Can I use the same email on my phone and computer?
Yes. Sign in with the same email address and password on both devices. Messages are stored on the email server, so you see the same inbox and messages on each device. If you read a message on your phone, it shows as read on your computer too.
What if I cannot remember my email address?
If you created the account yourself, check old receipts, documents, or confirmation emails from websites where you used that address. If you still cannot find it, you can create a new email account. If someone else created it for you, ask them what address they used.
Why do some emails go to a Spam or Junk folder instead of my inbox?
Email systems use filters to catch unwanted messages — often based on sender, subject line, or content. Sometimes legitimate messages get caught by mistake. Check your Spam or Junk folder regularly. If you find a message that should not be there, you can mark it as "Not spam" and move it to your inbox. You can also add trusted senders to your contacts so their messages go straight to your inbox.