Zoho Mail Offline Mode allows users to access selected email content even when an internet connection is unavailable. It is useful for reviewing previously loaded messages, referring to important information, and preparing email responses while travelling or working in areas with limited connectivity.
Once offline mode is enabled and configured, Zoho Mail stores supported email data locally in the browser. When the device reconnects to the internet, users can resume normal email activity, with offline actions handled according to the feature's supported capabilities.
What can you do?
Zoho Mail Offline Mode helps users continue working with their emails when they temporarily lose internet access. Depending on the configured settings and supported functionality, users can:
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Read emails offline: Access previously synchronized messages without an active internet connection.
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Refer to important information: Review saved email content when travelling or working in locations with unreliable connectivity.
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Prepare email responses: Draft messages while offline, where supported, and complete sending when connectivity is restored.
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Reduce workflow interruptions: Continue reviewing available information instead of waiting for an internet connection.
Offline mode does not provide unrestricted access to every mailbox feature. Content that has not been synchronized and actions requiring a live connection may remain unavailable until the device reconnects.
Enabling Zoho Mail Offline
To use offline mode, enable the feature through Zoho Mail's settings in a supported browser.
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Sign in to Zoho Mail using a supported browser.
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Open Settings.
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Locate the Offline or Offline Mail settings.
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Enable offline access.
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Configure the synchronization options, such as the amount of email content to store locally, where available.
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Allow the initial synchronization to complete while connected to the internet.
The exact setting names and available options may vary with the Zoho Mail interface and account configuration. For reliable access, enable offline mode before disconnecting from the internet and verify that the required messages have been synchronized.
Note:
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To protect your emails, do not enable Offline mode in shared or public systems.
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Create a browser bookmark for Zoho Mail for easy Offline access.
Offline settings
Offline settings determine how Zoho Mail prepares and stores email data for use without an internet connection. Depending on the available options, users may be able to control how much email content is synchronized and which data is retained locally.
Choosing an appropriate synchronization range helps balance offline availability with local storage usage. Synchronizing only the content needed for upcoming work can be useful on devices with limited storage.
Save emails
You can select which emails you want to be available only. You can store the emails received in the last 7, 14 or 30 days. Click on the date drop-down in the Save emails section to select the number of days.
Security settings
You can decide if you want to retain the offline data stored in your browser when you log out. You can choose from one of the following options:
Offline mode stores supported email data in the browser's local storage environment, so device security is important. Anyone with access to an unlocked device or the same browser profile may potentially access locally available information.
To protect your mailbox:
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Use a password-protected device and lock it when unattended.
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Avoid enabling offline access on shared or public computers.
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Sign out and clear locally stored email data when appropriate, especially on devices you no longer use.
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Follow your organization's policies for storing business or confidential information locally.
Offline access should be enabled only on devices where local access to email data is appropriate.
Storage
This section displays the storage information of your browser. It includes the total storage and the storage that has been used by the offline data.
How does it work?
By enabling the Offline mode, you can sync the emails of your choice when you are connected to the internet. These emails are stored in the browser where you have enabled Offline. Create a bookmark as mentioned in the settings, for later use. Once the syncing is done, you will be able to access your emails offline. When you are disconnected, use the bookmark to access Zoho Mail or navigate to mail.zoho.in/zm/ to view the emails that were synced.
When offline mode is enabled, Zoho Mail synchronizes supported email data to the browser while an internet connection is available. This creates a local copy of eligible content that can be accessed when the connection is interrupted.
Once offline, users can work with the content and functions supported by the feature. Activities that require communication with Zoho Mail's servers, such as retrieving new messages, cannot be completed in real time.
When connectivity returns, Zoho Mail can resume online operations and process supported pending actions. Users should not assume that every offline action is automatically synchronized; check the mailbox after reconnecting to confirm that important changes or messages have been processed.
Points to remember
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Enable offline mode while you have a stable internet connection.
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Allow the initial synchronization to finish before relying on offline access.
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Only synchronized and supported content will be available without connectivity.
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New incoming emails cannot be retrieved in real time while offline.
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Sending and synchronizing changes may require an active internet connection.
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Offline data uses local device storage, so consider available space and security.
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Avoid relying on offline mode as the only way to access critical information.
Supported Browsers
Zoho Mail Offline Mode depends on browser capabilities and Zoho Mail's current compatibility requirements. Use a supported, up-to-date browser and ensure that browser settings allow the required local storage and offline functionality.
Availability can vary by browser version, account type, and organizational policies. Consult Zoho Mail's current help documentation for the officially supported browsers before configuring offline access for a team.
FAQ
How to enable offline mode?
Sign in to Zoho Mail using a supported browser, open Settings, locate the offline settings, and enable offline access. Configure the available synchronization options and allow your messages to be stored locally while you are online. The precise menu names may vary depending on the current interface.
Is Zoho Mail POP3 or IMAP?
Zoho Mail supports both POP3 and IMAP for accessing email through compatible external email clients, subject to account eligibility and administrator settings. POP3 primarily downloads messages to a device, while IMAP synchronizes messages and supported changes with the server across devices.
Zoho Mail's browser-based offline mode is a separate feature. It should not be confused with POP3 or IMAP, which are email protocols used by external clients.
What are the IMAP settings for Zoho Mail?
To configure Zoho Mail in an external email client, use the server details appropriate for your account and Zoho data centre. Common settings for personal Zoho Mail accounts include:
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Incoming server (IMAP): imap.zoho.com
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IMAP port: 993
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Security: SSL/TLS
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Outgoing server (SMTP): smtp.zoho.com
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SMTP port: 465 with SSL or 587 with STARTTLS
These are common settings, not universal values for every Zoho Mail account. Organization-hosted accounts and regional data centres may use different server addresses. Confirm the correct configuration in Zoho Mail's official documentation, and use the required authentication method for your account.
