How to Start a New Email: A Complete Guide for Every Platform

Starting a new email sounds simple — and usually it is. But the exact steps vary depending on which email client you're using, what device you're on, and whether you're composing from a web browser, a desktop app, or a mobile phone. Understanding how the process works across different platforms makes it faster and less frustrating, no matter your setup.

What "Starting a New Email" Actually Means

When you start a new email, you're opening a blank compose window — a fresh message that isn't a reply to or forward of an existing conversation. This is sometimes called composing a new message, and it's distinct from replying within a thread.

Most email clients place this action prominently, because it's one of the most common things people do. The button or link is usually labeled "Compose," "New Email," "New Message," or represented by a pencil or plus icon, depending on the platform.

How to Start a New Email in the Most Common Platforms

Gmail (Web Browser)

  1. Open gmail.com and sign in.
  2. Click the "Compose" button in the upper-left corner — it's a large button, hard to miss.
  3. A compose window opens in the bottom-right corner of the screen.
  4. Fill in the To, Subject, and message body fields.
  5. Click Send when ready.

Keyboard shortcut: Press C anywhere in Gmail to open a new compose window instantly.

Outlook (Web Browser)

  1. Go to outlook.com or open your organization's Outlook web app.
  2. Click "New mail" or "New message" near the top-left.
  3. A compose pane opens, either as a panel or a full window depending on your settings.
  4. Add recipients, a subject line, and your message.
  5. Hit Send.

Keyboard shortcut: Press N to start a new message in Outlook on the web.

Apple Mail (Mac Desktop)

  1. Open the Mail app.
  2. Click the pencil-and-paper icon in the toolbar, or go to File > New Message.
  3. A new message window opens.
  4. Add your recipient in the To field, write a subject, and compose your message.
  5. Click the Send button (paper airplane icon) or press ⌘ + Return.

Gmail or Outlook on Mobile (iOS and Android)

  1. Open the Gmail or Outlook app.
  2. Tap the compose button — typically a pencil icon or a floating "+" button in the bottom-right corner.
  3. The compose screen opens full-screen on most phones.
  4. Fill in the recipient, subject, and body.
  5. Tap the send icon (usually a paper airplane).

📱 On both iOS and Android, you can often access compose directly from the app's home screen widget or shortcut without opening the full app first.

The Key Fields Every New Email Needs

No matter which platform you're on, every new email has the same core fields:

FieldPurposeRequired?
ToPrimary recipient(s) email addressYes
CCCarbon copy — others who should see itNo
BCCBlind carbon copy — hidden recipientsNo
SubjectBrief summary of the email's topicStrongly recommended
BodyThe actual message contentYes

BCC is particularly useful when emailing a large group where you don't want recipients seeing each other's addresses. CC is for keeping others informed without expecting a reply from them.

Formatting Options When Composing

Most modern email clients offer a rich text editor by default, giving you access to:

  • Bold, italic, and underline formatting
  • Bullet points and numbered lists
  • Font size and color changes
  • Hyperlinks
  • File attachments (paperclip icon)
  • Inline image insertion

Some platforms also let you switch to plain text mode, which strips all formatting. Plain text is useful for mailing lists, certain business systems, or when you want guaranteed compatibility across all email clients.

✉️ If you're emailing someone who uses an older or stripped-down email client, plain text ensures nothing looks broken on their end.

Adding Attachments Before You Send

Attaching files to a new email is straightforward, but timing matters. Most clients let you:

  • Click the paperclip icon in the compose toolbar
  • Drag and drop a file directly into the compose window (on desktop)
  • Attach from cloud storage like Google Drive or OneDrive, which inserts a shareable link instead of uploading the file itself

Cloud-linked attachments are useful for large files that exceed a provider's attachment size limit — Gmail's limit is around 25MB for direct attachments, while Outlook's is similar. Larger files generally need to be shared via link.

What Affects Your Experience

How smooth or feature-rich your compose experience is depends on several variables:

  • Platform: Gmail, Outlook, Apple Mail, Yahoo Mail, and others each have slightly different interfaces and features.
  • Device type: Desktop browsers offer the most options; mobile apps prioritize speed and simplicity.
  • Account type: Free consumer accounts and paid business/enterprise accounts may have different compose features, including AI-assisted writing tools.
  • Internet connection: Web-based clients require a connection to send; some desktop apps (like Outlook with Exchange) allow drafting offline and send when reconnected.
  • Email client version: Older or outdated apps may lack features like inline attachments, scheduling, or formatting tools available in current versions.

Drafts: What Happens If You Don't Finish

If you close a compose window before sending, most email clients automatically save the message as a draft. You'll find it in your Drafts folder, where you can reopen and finish it later.

🗂️ It's good practice to check your Drafts folder if you ever think you sent a message but aren't sure — it may have been saved instead of sent.

The exact behavior varies: Gmail saves drafts every few seconds automatically, while some older or third-party clients may prompt you to save before closing.


Whether you're using a browser, a desktop application, or a mobile app, the core process of starting a new email stays consistent — find the compose button, fill in your fields, write your message, and send. The differences come down to interface design, available features, and the specific email provider powering your account. How those variables interact with your own workflow, devices, and the people you're emailing is what ultimately shapes the experience.