If Outlook won’t connect to your Zoho account, your phone has stopped syncing, or you’re just trying to find the right server settings before you lose another 20 minutes to trial and error — you’re in the right place.
This guide covers everything you need: the latest Zoho Mail IMAP, SMTP, and POP settings, correct port numbers, SSL/TLS requirements, step-by-step setup for Outlook, Thunderbird, Apple Mail, Gmail, Windows Mail, Android, and iPhone, how to enable IMAP, why authentication fails, and fixes for the most common connection errors. There’s also a full FAQ section at the end for quick answers.
The server settings and steps below have been checked against Zoho’s official IMAP documentation and tested against common client behavior in Outlook, Thunderbird, Apple Mail, Android, and iPhone.
Table of Contents
Before You Configure Zoho Mail
Before entering any server settings, make sure:
- Your Zoho Mail account is active and you can log into webmail normally
- IMAP or POP access is enabled for the account (covered below)
- Two-factor authentication is set up correctly, if you use it
- You’ve generated an App Password, if 2FA is on
- Your mail client and network both support SSL/TLS
Skipping any of these is the single biggest reason setups fail on the first try.
Zoho Mail Server Settings (Quick Reference)
| Setting | Value |
| Incoming IMAP Server | imap.zoho.com |
| IMAP Port | 993 |
| Incoming POP Server | pop.zoho.com |
| POP Port | 995 |
| Outgoing SMTP Server | smtp.zoho.com |
| SMTP SSL Port | 465 |
| SMTP TLS Port | 587 |
| Authentication | Required |
| SSL/TLS | Required |
| Username | Full email address |
| Password | Account password or App Password |
Paid organization users with a domain-based address (you@yourdomain.com) should use imappro.zoho.com (IMAP), poppro.zoho.com (POP), and smtppro.zoho.com (SMTP) instead of the standard hostnames. Both sets work the same way — check Zoho Mail Settings > Mail Accounts > Server Configuration Details in your account for the exact hostname assigned to you, since it can also vary by data center (US, EU, India, Australia).
Zoho Mail IMAP Settings
Incoming Server: imap.zoho.com Port: 993 Security: SSL required Username: Your full Zoho email address Password: Your account password, or an App Password if two-factor authentication is enabled
Paid organization (custom domain) users: use imappro.zoho.com instead.
IMAP is the recommended protocol for most users because it keeps your inbox synchronized across every device. Read an email on your phone, and it shows as read on your laptop too — nothing is downloaded and removed from the server. This makes IMAP the better choice if you check email from more than one device, which covers most people today.
Zoho Mail SMTP Settings
Outgoing Server: smtp.zoho.com Port: 465 (SSL) or 587 (TLS) Authentication: Required
SMTP handles outgoing mail — it’s what actually sends your message after you hit “send.” The two most common SMTP errors are authentication failures (usually a wrong password or a missing App Password) and port-blocking issues, where your network or ISP blocks the standard port. If 587 doesn’t work, try 465 as a fallback, and confirm “requires authentication” is checked in your client.
Zoho Mail POP3 Settings
Incoming Server: pop.zoho.com Port: 995 Security: SSL required Outgoing Server: smtp.zoho.com, port 465 (SSL)
POP3 downloads emails to a single device and, depending on your settings, may remove them from the server afterward. There’s no sync between devices.
Use POP when: you only ever check mail from one device, you want a permanent local archive, or you have limited server storage. Skip POP if: you switch between phone, laptop, and webmail — IMAP will serve you better.
How to Configure Zoho Mail
Every client setup below needs the same core details from the quick reference table — only the navigation path changes.
Outlook (Classic)
Go to File > Add Account > Manual setup, choose IMAP, and enter the incoming/outgoing server details above. The most common mistake: forgetting to check “My outgoing server requires authentication” under More Settings.
New Outlook
Select Add Account > Advanced options > Let me set up my account manually, choose IMAP, and enter the same server details. New Outlook sometimes defaults to Exchange-style setup — make sure you explicitly choose IMAP.
Thunderbird
Use Account Settings > Account Actions > Add Mail Account, then enter your email and password. Thunderbird usually auto-detects Zoho’s servers, but if it doesn’t, enter them manually using the table above.
Apple Mail
Go to Mail > Add Account > Other Mail Account, then input the IMAP/SMTP details. A common error here is a duplicate SMTP entry from an old account — check Mail > Preferences > Accounts if outgoing mail fails.
Gmail (Check Mail from Other Accounts)
In Gmail, go to Settings > Accounts and Import > Check mail from other accounts, add your Zoho address, and enter the POP or IMAP settings. Note that Gmail’s built-in “Check mail” feature only supports POP, not IMAP.
Windows Mail
Select Accounts > Add Account > Advanced setup > Internet email, then fill in the incoming and outgoing server fields exactly as shown above.
iPhone and iPad
Go to Settings > Mail > Accounts > Add Account > Other, then Add Mail Account. Enter your name, email, and password, and input the IMAP/SMTP servers manually if auto-setup fails. If you use 2FA, you’ll need an App Password here instead of your regular one.
Android
In the Gmail app, tap Add account > Other, choose IMAP, and enter the server details. Some Android mail apps ask for incoming and outgoing settings on separate screens — make sure both are filled in before saving.
Also supported: Spark, eM Client, and Mailbird all connect to Zoho Mail using the same IMAP/SMTP details above — most will auto-detect the servers once you enter your email address.
If you’re setting up a related account too, see our guides to Comcast Email Settings, Spectrum Email Settings, Yahoo Mail Settings, iCloud Email Settings or Hotmail Settings.
How to Find and Enable IMAP in Zoho Mail
Personal users: Log into Zoho Mail, go to Settings > Mail Accounts, select your address, and check the IMAP Access box under the IMAP section, then save. This same screen is where you’ll find your account’s IMAP/POP status if you’re just trying to locate it.
Organization users: Individual users enable IMAP the same way from their own account settings, unless an admin has restricted it.
Admins (enabling for all users): From the Zoho Mail Admin Console, go to Control Panel > Mail Settings > POP/IMAP Access, where IMAP can be enabled organization-wide or for specific user groups.
Zoho IMAP Password Explained
Zoho Mail supports three authentication methods, and mixing them up is one of the most common causes of “authentication failed” errors:
- Regular password — works only if two-factor authentication is off.
- App Password — a generated, client-specific password required once 2FA is enabled. Create one from Zoho Account Security settings.
- OAuth — used by some modern clients that support Zoho sign-in directly, bypassing manual password entry.
If you’ve enabled 2FA and your regular password suddenly stops working in Outlook or on your phone, that’s the signal you need an App Password.
Where to create one: Zoho Account > Security > App Passwords > Generate New Password. Name it after the client you’re using (e.g., “Outlook Desktop”) so you can revoke it individually later if needed.
When it’s required: Any time 2FA is enabled and you’re connecting a third-party IMAP/POP/SMTP client — Outlook, Thunderbird, Apple Mail, and most mobile mail apps all need one instead of your normal password.
OAuth support: A smaller number of modern clients (including some versions of Outlook and Thunderbird) can authenticate directly through Zoho’s OAuth sign-in, skipping the App Password step entirely. Check your client’s account-add screen for a “Sign in with Zoho” option before generating one manually.
Common mistakes: Reusing the same App Password across multiple devices (create a separate one per client instead), pasting the password with an extra space, and forgetting to regenerate a new one after revoking an old one.
Zoho Mail Not Working in Outlook
This is one of the most common Zoho support searches, and it’s almost always one of six things:
- Wrong port — confirm you’re using 993 for IMAP, 465 or 587 for SMTP, not a legacy or ISP-suggested port
- IMAP disabled — check Mail Accounts > IMAP Access in Zoho Settings; Outlook can’t connect if it’s off
- Missing App Password — if 2FA is on, your normal password will silently fail; generate an App Password instead
- Outlook cache/profile issues — a corrupted Outlook profile can keep retrying old credentials; removing and re-adding the account often fixes this
- Firewall or antivirus blocking the port — corporate firewalls in particular sometimes block 465/587; temporarily disabling confirms this
- Outdated TLS version — very old Outlook builds may not support the TLS version Zoho requires; updating Outlook resolves this
Quick troubleshooting order: Check IMAP is enabled → confirm you’re using an App Password if 2FA is on → verify the port numbers → confirm SSL/TLS is selected → temporarily disable firewall/antivirus → remove and re-add the account → contact Zoho Support if none of this resolves it.
Common Zoho Mail Errors and Fixes
| Error | Likely Cause | Fix |
| Authentication failed | Wrong password or missing App Password | Generate and use an App Password |
| SMTP authentication error | “Requires authentication” unchecked | Enable authentication in outgoing server settings |
| IMAP login failed | IMAP not enabled on account | Enable IMAP access in Mail Settings |
| Cannot connect / server timeout | Wrong port or blocked by network/ISP | Try port 587 instead of 465, or vice versa |
| SSL certificate error | Outdated client or wrong port | Update client software, confirm SSL is enabled |
| Outlook keeps asking for password | Saved credentials mismatch after 2FA change | Remove and re-add the account with an App Password |
| Android/iPhone sync issues | IMAP not enabled, or app cache issue | Confirm IMAP is on; remove and re-add the account |
| Cannot send/receive email | SMTP or IMAP server misconfigured | Re-check server names and ports against the table above |
Zoho Mail IMAP vs POP3
| Factor | IMAP | POP3 |
| Synchronization | Full two-way sync | None — one-way download |
| Multiple devices | Yes | No (single device) |
| Offline access | Limited (cached copies) | Full (downloaded locally) |
| Storage | Uses server storage | Uses local device storage |
| Speed | Slightly slower on first load | Faster after download |
| Best for | Multi-device users | Single-device, archive-focused users |
Recommendation: Use IMAP unless you have a specific reason to keep everything local on one device.
Security Best Practices
- Enable two-factor authentication on your Zoho account
- Use App Passwords for every third-party mail client
- Only connect using SSL/TLS — never an unencrypted port
- Update your desktop and mobile mail clients regularly
- Avoid reusing your Zoho password anywhere else
Frequently Asked Questions
What is the IMAP server for Zoho Mail? The IMAP server is imap.zoho.com on port 993 with SSL required. Use your full email address as the username.
Is Zoho Mail POP3 or IMAP? Zoho Mail supports both. IMAP is recommended for most users because it syncs across devices; POP3 suits single-device, offline-focused setups.
How do I enable IMAP for all users in Zoho Mail? Admins can enable it organization-wide from the Admin Console under Control Panel > Mail Settings > POP/IMAP Access.
What is the SMTP setting for Zoho? smtp.zoho.com, using port 465 with SSL or port 587 with TLS, with authentication required.
What is the difference between SMTP and IMAP? SMTP sends outgoing mail; IMAP retrieves and syncs incoming mail across devices. You need both configured for a mail client to fully work.
How do I configure Zoho Mail? Add a new account in your mail client, choose IMAP or POP, and enter the server settings from the quick reference table above, along with your full email address and password.
Does Zoho Mail support IMAP? Yes. IMAP must be enabled from Mail Settings before it will work in third-party clients.
Which SMTP port does Zoho use? Port 465 with SSL, or port 587 with TLS.
Why won’t Zoho Mail connect to Outlook? Usually a missing authentication checkbox on the outgoing server, an incorrect port, or a password issue tied to two-factor authentication.
Can I use Zoho Mail on Android? Yes, through the Gmail app or any IMAP-compatible Android mail app, using the standard server settings.
Can I use Zoho Mail on iPhone? Yes, via the built-in Mail app using manual IMAP/SMTP setup.
Is IMAP enabled by default? No. It must be turned on manually from Mail Settings before it works with external clients.
Does Zoho require an App Password? Only if two-factor authentication is enabled — otherwise your regular password works.
Can I use Zoho Mail with Gmail? Yes, through Gmail’s “Check mail from other accounts” feature, though this only supports POP, not IMAP.
Why does Zoho keep asking for my password? This typically happens after enabling 2FA without updating to an App Password, or after a saved-credential mismatch in the client.
Zoho Mail vs. Microsoft 365 Email Setup
If you’re weighing whether to stay on Zoho or move to a different platform, here’s the quick comparison:
| Feature | Zoho Mail | Microsoft 365 |
| IMAP/POP/SMTP | Yes | Yes |
| Exchange support | No | Yes |
| Business collaboration tools | Basic | Advanced |
Final Thoughts
IMAP is the right choice for most Zoho Mail users, since it keeps every device in sync. Whichever protocol you use, double-check the ports and SSL/TLS settings above, make sure IMAP or POP is actually enabled on the account before configuring a client, and generate an App Password if two-factor authentication is on. If something still won’t connect, the troubleshooting steps earlier in this guide cover the most common causes.
Need Help Migrating from Zoho Mail?
If you’re moving away from Zoho Mail entirely — to Microsoft 365, Google Workspace, Exchange Online, or another IMAP-based provider — getting the settings right is only half the job. SkyMigrate handles the full migration for you, including Zoho Mail backup before the move, with secure transfer, zero data loss, and minimal downtime, backed by hands-on support if anything needs troubleshooting along the way.
