How to set up business email in Outlook
To set up business email in Outlook, add the account manually as IMAP. Use your mail server hostname, the full email address as username and the mailbox password. Incoming is IMAP on port 993 with SSL/TLS; outgoing is SMTP on 465 with SSL/TLS or 587 with STARTTLS, with authentication on. Avoid port 25.
For staff and owners connecting a domain mailbox hosted on cPanel, Plesk or a business email plan to Outlook on any device.
knowledge
- Read time
- 4 min
- Sections
- 5
- Updated
- 14 Nov 2026
- Written by
- WebJi® team
Last editorial update: 14 November 2026. Prices follow the dated sources on this page; checkout confirms current charges.
What settings does Outlook need for business email?
Outlook needs the mail server hostname, your full email address as the username, the mailbox password, IMAP on port 993 with SSL/TLS, and SMTP on port 465 with SSL/TLS or 587 with STARTTLS. Collect these from your hosting panel's "Connect Devices" or mail-client page before opening Outlook.
| Direction | Protocol | Port | Encryption |
|---|---|---|---|
| Incoming | IMAP (recommended) | 993 | SSL/TLS |
| Incoming | POP3 | 995 | SSL/TLS |
| Outgoing | SMTP submission | 465 | SSL/TLS |
| Outgoing | SMTP submission | 587 | STARTTLS |
These ports follow the IETF standards for mail submission and access over TLS.[1] Use IMAP if you also read mail on a phone, so every device sees the same folders; POP3 vs IMAP explains the difference. Avoid ports 25, 110 and 143 for client setup.
How do you add business email to Outlook on Windows?
In classic Outlook, go to File → Add Account, enter the address, choose advanced setup, pick IMAP and enter the server settings; in the new Outlook for Windows, go to Settings → Accounts → Email accounts → Add account. If Outlook tries to treat the address as Microsoft 365, choose the manual or IMAP option.
- Enter your full email address and choose Advanced options → Let me set up my account manually (classic) or pick IMAP when offered (new Outlook).
- Incoming: your mail hostname, port 993, encryption SSL/TLS.
- Outgoing: the same hostname, port 465 SSL/TLS or 587 STARTTLS, with "requires authentication" on.
- Username for both: the full email address. Password: the mailbox password.
- Send a test to an outside address and reply to it; the reply should arrive in this mailbox.
How do you set up business email in Outlook for Mac?
Open Outlook → Settings → Accounts, click + and add a new account, then choose IMAP and enter the same hostname, ports and full-address username. The settings are identical to Windows.
- Enter the address; if Outlook suggests Microsoft 365 or Google, select IMAP/POP instead.
- Incoming server: hostname, port 993, "Use SSL to connect" on.
- Outgoing server: hostname, port 465 with SSL or 587 with STARTTLS; authentication with the same username and password.
- After adding, check that Sent and Deleted items map to the server folders, so other devices see them.
How do you add business email to the Outlook app on iPhone or Android?
In the Outlook mobile app, tap Add account, type the full address, choose IMAP (sometimes under "Advanced settings"), and enter the same incoming and outgoing servers and ports. The Outlook app is separate from Apple Mail or the phone's own mail app.
- Skip Microsoft 365 or Google sign-in screens if your mailbox is on your hosting or a business email plan.
- Enter IMAP 993 SSL and SMTP 465 SSL or 587 STARTTLS, both with the full address as username.
- For Apple Mail use iPhone email setup; for Android's built-in app use Android email setup.
How do you fix Outlook sending, login and certificate errors?
Most problems come from using port 25, typing only the part before @ as the username, leaving SMTP authentication off, or using a hostname that does not match the server's certificate. Match the symptom to the fix below.
| Symptom | Likely cause | Fix |
|---|---|---|
| Sending times out | Port 25, often blocked by Indian ISPs | Use 465 SSL or 587 STARTTLS |
| Repeated password prompts | Username missing the domain, or wrong password | Full address as username; reset the mailbox password in the panel |
| Certificate warning | Hostname differs from the certificate's name | Use the exact hostname from Connect Devices; keep the port |
| Receives but cannot send | SMTP authentication off | Tick "outgoing server requires authentication" |
| Sent mail missing on phone | POP account, or Sent folder mapped locally | Re-add as IMAP and map Sent to the server folder |
| Messages land in recipients' spam | SPF, DKIM or DMARC missing | Publish the records; see SPF and DMARC setup |
To read the same mailbox in Gmail instead, see configure webmail in Gmail.
Where does the business mailbox itself come from?
The mailbox lives on your hosting account or a dedicated business email plan; Outlook is only the app that reads and sends it. Create the address first, then add it to Outlook.
On cPanel hosting the mailbox is created under Email Accounts, as shown in create an email account in cPanel. For mail separate from the website, WebJi® business email hosting starts at ₹2,520 a year for five 5 GB mailboxes, before 18% GST; checkout confirms the current price. Setup help is available at support@webji.services, 24/7 in Hindi and English.
Sources
- IETF, RFC 8314: Use of TLS for Email Submission and Access (ports 465 and 993), and RFC 6409: Message Submission for Mail (port 587).
Frequently asked questions
Should I choose 465 or 587 for outgoing mail?
Either works when your server supports it. Port 465 encrypts from the first byte and is the current standard recommendation; 587 starts plain and upgrades with STARTTLS. If one is blocked on your network, try the other.
Can I move old emails into Outlook from a previous host?
With IMAP on both old and new mailboxes, add both accounts to Outlook and drag folders across, or ask your new host to migrate the mailbox server-to-server, which is faster for large mailboxes.
Why does Outlook keep asking for my password?
The saved password no longer matches, or the username is wrong. Re-enter the full email address and the current password in account settings. If it persists, the server may have temporarily blocked your IP after repeated failures; wait or ask support to clear it.
Is Outlook free to use with my own domain email?
The Outlook mobile apps and the new Outlook for Windows can add IMAP accounts without a Microsoft 365 subscription. Classic desktop Outlook needs a Microsoft 365 or Office licence.
Last editorial update: 15 November 2026. Prices follow the dated sources on this page; checkout confirms current charges.
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