Hotmail SMTP Server: Outlook.com Settings, Limits, and Configuration

Hotmail / Outlook.com Server Settings (Quick Reference)

Microsoft consolidated all consumer email (Hotmail, Outlook.com, Live, MSN) to the same infrastructure. All use the same server names:

Protocol	Server / Host	Port	Encryption
SMTP (outgoing)	smtp-mail.outlook.com	587	STARTTLS
IMAP (incoming)	imap-mail.outlook.com	993	SSL/TLS
POP3 (incoming)	pop-mail.outlook.com	995	SSL/TLS

All require authentication with your full email address (e.g., [email protected]) and account password — or app password if 2-Step Verification is enabled.

SMTP Hotmail Configuration Steps

For most apps and devices:

1. Outgoing server (SMTP): smtp-mail.outlook.com
2. Port: 587
3. Encryption: STARTTLS (sometimes labeled "Auto" or "TLS")
4. Authentication: yes
5. Username: full email address (e.g., [email protected], [email protected], [email protected])
6. Password: account password or app password

For incoming (IMAP):

1. Server: imap-mail.outlook.com
2. Port: 993
3. Encryption: SSL/TLS

For incoming (POP3):

1. Server: pop-mail.outlook.com
2. Port: 995
3. Encryption: SSL/TLS

Hotmail Smtp Server Name Naming

A common source of confusion: people search for smtp.hotmail.com, smtp.live.com, or smtp.msn.com. None of those work. The current Hotmail smtp host is smtp-mail.outlook.com for all Microsoft consumer email addresses, regardless of the email domain.

The legacy smtp.live.com server was retired during the Outlook.com migration. Don't use it.

App Password Generation (2-Step Verification On)

If you have 2-Step Verification enabled on your Microsoft account (recommended and increasingly required):

1. Sign in to account.microsoft.com/security
2. Click "Advanced security options"
3. Under "App passwords," create a new app password
4. Use the generated password in your SMTP configuration

App passwords bypass 2-Step Verification for that specific app/device. Each app gets its own password — revoke individually if a device is lost.

Hotmail Pop3 Setup (Legacy)

POP3 downloads messages and (by default) removes them from the server. Only use POP3 if you specifically need that behavior. Most modern setups use IMAP instead.

POP3 setup for Hotmail:

• Server: pop-mail.outlook.com
• Port: 995
• Encryption: SSL/TLS
• Auth: yes (full email + password or app password)

Server Settings for Hotmail on iPhone

iPhone (iOS Mail app) typically auto-detects Hotmail settings when you select "Outlook.com" as the account type during setup. If manual entry is needed:

• Account type: Outlook.com (or IMAP if older iOS)
• Use the IMAP and SMTP settings above
• iOS will guide you through 2-Step Verification if enabled

See server settings for hotmail on iphone for full iOS setup.

Hotmail Webmail Settings

For Hotmail webmail (browser access), no SMTP/IMAP/POP3 config needed — just sign in at outlook.live.com. Settings only matter for third-party email clients.

Hotmail Sending Limits

Microsoft consumer email limits:

• Approximately 300 messages per day per account
• 100 recipients per message
• Hitting limits causes temporary throttling

These are personal account limits. For higher volumes, you need Microsoft 365 (Office 365) business accounts or a dedicated ESP. See Office 365 SMTP settings.

Common Hotmail SMTP Problems

"Authentication failed"

Almost always an app password issue. If 2-Step Verification is on (which is the default for new accounts), regular password won't work for SMTP — generate an app password.

"Cannot connect to server"

Wrong server name. Use smtp-mail.outlook.com, not smtp.hotmail.com or smtp.live.com.

"Connection refused on port 25"

Don't use port 25. Use 587 with STARTTLS.

Account suspended after high-volume sending

Hotmail is for personal correspondence. Sending 100+ messages/day from a personal account triggers anti-spam systems. For real volume, use Microsoft 365 or a transactional ESP.

Practitioner note: I get asked about Hotmail SMTP server name details constantly because Microsoft's documentation has scattered the consolidation messaging. The simple rule: for any Microsoft consumer email (hotmail.com, outlook.com, live.com, msn.com), the outgoing server is smtp-mail.outlook.com on port 587 with STARTTLS and full-address authentication.

Practitioner note: If you're sending business mail "from" a Hotmail address, you're already in trouble. Consumer email addresses signal unprofessionalism and lack of brand. Move to a custom domain on Google Workspace or Microsoft 365 — both let you send via professional SMTP infrastructure with much higher limits.

Practitioner note: Hotmail's 300/day sending limit catches people who think they can use a personal Hotmail account for any kind of business or transactional sending. They can't. Even legitimate use cases (small business notifications) hit the wall fast. Use a real ESP for anything programmatic.

If you're trying to architect email sending for a small business or SaaS team and the personal Hotmail / Outlook.com SMTP is your starting point, book a consultation. I'll recommend the appropriate next step — Microsoft 365 mailbox, dedicated transactional ESP, or hybrid setup.

Sources

• Microsoft: POP, IMAP, and SMTP settings for Outlook.com
• Microsoft: Server settings from your email provider
• Mailtrap: Hotmail SMTP guide
• MailerSend: SMTP ports explained

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v1.0 · May 2026