Steps to Configure Zoho Mail account as IMAP in Outlook for Windows
Log in to your Zoho Mail account to enable IMAP access. (Login to www.zoho.com/mail >> Settings >> Mail Accounts >> IMAP Access >> Enable IMAP Access by clicking the checkbox) .
Launch the Microsoft Outlook application in your Windows system.
Click File and select Add Account.
Locate and select 'Manual setup or additional server types', and click Next
In the ‘Choose Service’ page, select 'POP or IMAP', and click Next.
In the 'Add Account' page, provide the following details:
Your name: Your preferred display name. This will be used in the emails you send from Outlook.
Email address: Your Zoho account email address (firstname.lastname@example.org or email aliases for organization accounts or email@example.com, if you have a personal account)
Server Information: For specific configuration related to your account.
Select IMAP from the Account Type menu.
Incoming server:imappro.zoho.com - for organization accounts (if your domain is hosted with Zoho).
Incoming Server:imap.zoho.com - for personal accounts (if you have a personal @zoho.com account)
Username – The email address of your Zoho account (firstname.lastname@example.org for Email Hosting users / email@example.com for personal users).
Password – Zoho Account Password (Use Application-specific Password if Two-Factor Authentication is enabled for your account.)
Ensure that 'Remember Password' ischecked, and click More Settings.
Outgoing Server tab: Select My outgoing server (SMTP) requires authentication and ensure that Use same settings as my incoming server is checked
Select the Advanced tab and configure the Settings as follows:
Incoming Server (IMAP): 993
Select SSL from the drop down menu for encrypted connection.
In Outgoing Server, Select SSL from the drop down for the encrypted connection.
Outgoing Server (SMTP): 465
You will be redirected back to the 'Add New Email Account' section.
Click Test Account Settings to check the configuration info.
When the tests are successful, Outlook will display a popup as shown below. Click Close. If you see any errors, check the troubleshooting section.
Specific Instructions for Outlook IMAP
By default, our SMTP Servers automatically place sent emails in the Sent folder. However, when you send an email with Outlook, it also saves another copy in your Sent folder there.
To avoid duplicates in the Sent folder, change the following settings:
In Zoho Mail:
You can turn off the copy created by the server in the SMTP settings. Refer here for instructions.
However, you can also change the settings in the email client you use.
In Outlook 2007:
From the Tools menu, select Options and then Preferences
Choose Email Options and uncheck Save Copies of messages in Sent Items folder.
In Outlook 2010:
Select your Zoho account from the Account Settings menu and click Change
Choose More Settings, click Sent Items and select, Do not save copies of sent items.
Downloading full messages
By default, Outlook downloads just the Sender, Subject, and the Date Information (headers) when syncing email. It downloads the full message only when you click on that email. You can change this behavior by changing the Send/ Receive Settings.
In Outlook 2013, there are some issues related to Folders sync. We recommend using previous Outlook versions until Outlook 2013 is stabilized for IMAP usage.