History of Secure Mail known and fixed issues

Last published : Oct 12, 2026

This article lists fixed and known issues for Secure Mail for versions earlier than the recently supported versions. For the most recent documentation, see Citrix Secure Mail.

Secure Mail 23.3.5

Known issues in Secure Mail for Android

You might not receive reminder notifications for calendar events. The issue occurs when the alarm and reminder permission is revoked for Secure Mail.

As a workaround, go to Settings > Apps > Special access > Alarms and reminders > Secure Mail and tap to turn on notifications.

Fixed issues in Secure Mail for Android

After you upgrade to Android 13, Secure Mail becomes unresponsive.

Secure Mail 23.2.0

Known issues in Secure Mail for iOS and Android

There are no known issues in this release.

Fixed issues in Secure Mail for Android

When you open attachments in Secure Mail, you might see a gray watermark covering a part of the document. The issue happens when the polaris license expires.

This issue affects when the attachments previewed are of the following formats:
- .docx
- .xls
- .ppt
- .txt
When you try to open a .docx, .pptx, and .xlsx file using the Open with... option in Secure Mail, you might be unable to open the files in the corresponding native app. The issue occurs when you're using Android 13.

Fixed issues in Secure Mail for iOS

When you try to open the Voice Mail email from Microsoft Teams, the Secure Mail becomes unresponsive.
When you try to open the Missed Call email from Skype, the Secure Mail becomes unresponsive. The issue occurs when the Global Exchange address book doesn’t include the identification of the external caller.

Secure Mail 22.11.0

Known issues in Secure Mail for Android

There are no known issues in this release.

Fixed issues in Secure Mail for Android

When you open an email with attachments in Secure Mail for Android, you can't take screenshots of the attached file content. The issue can occur even when the restriction policy is disabled.
When you forward an email with attachments, the email remains in the outbox. After you send the email manually (by initiating a Send/Receive operation), the recipient can't open the attachments. The issue occurs intermittently.
The Webex meeting link doesn't open in the respective app when accessed from the Secure Mail calendar.

Secure Mail 22.9.0

Known issues in Secure Mail for iOS and Android

There are no known issues in this release.

Fixed issues in Secure Mail for iOS and Android

There are no fixed issues in this release.

Secure Mail 22.6.2

Known issues in Secure Mail for iOS

There are no known issues in this release.

Fixed issues in Secure Mail for iOS

When you download a file using Secure Web and try to send it to a recipient using Secure Mail, the New Message option doesn't appear.

Secure Mail 22.6.0

Known issues in Secure Mail for iOS

There are no known issues in this release.

Fixed issues in Secure Mail for iOS

While composing an email in Secure Mail for iOS, the wrong contact details appear when you try to add a contact.
Secure Mail and Secure Web for iOS become unresponsive when you open the app.

Secure Mail 22.3.0

Known issues in Secure Mail 22.3.0

When you edit a calendar event and update the meeting reminder time, the reminder doesn't appear for the meeting organizer. This issue occurs if your organization is running the HCL Domino 11 server (formerly Lotus Notes).
When you update a recurring event to a daily event and the try to edit one of the occurrences, the option to edit doesn't appear. This issue occurs if your organization is running the HCL Domino 11 server.
When you change the date or time of a single instance of a recurring event, that meeting gets rescheduled to a random date. This issue occurs if your organization is running the HCL Domino 11 server.

Fixed issues in Secure Mail 22.3.0

There are no fixed issues in this release.

Secure Mail 22.2.0

Known issues in Secure Mail 22.2.0

There are no known issues in this release.

Fixed issues in Secure Mail 22.2.0

On Samsung SM-A315 and SM-F926 devices, Secure Mail crashes during setup.

Secure Mail 21.12.0

Fixed issues

Secure Mail for Android crashes when you open an attached Microsoft Office file. The issue occurs when the device language is set to Turkish.
After you change your account password in Active Directory for Secure Mail for Android, you are unable to sign in to the app.

Secure Mail 21.11.0

There are no known or fixed issues in this release.

Secure Mail 21.10.5

Fixed issues in Secure Mail for Android

Microsoft Teams meeting creation fails when you use the on-premises Citrix Endpoint Management™ (CEM) where Network Access is set to Tunneled-Web SSO mode. The issue occurs because of a known issue in the Citrix Gateway where the Application Delivery Controller (ADC) removes authorization header that contains the bearer token.

Known issues in Secure Mail for Android

There are no known issues in this release.

Secure Mail 21.10.0

Known issues in Secure Mail for Android

There are no known issues in this release.

Fixed issues in Secure Mail for Android

In Secure Mail for Android, when you open an interactive PDF file on devices running Android 12 Beta 4, the file crashes.
In Secure Mail for Android, a blank screen appears when opening an email with embedded images.
When you switch from a cellular to Wi-Fi network and back again, you are prompted to sign in to Secure Hub for Android. Once you provide the PIN for authentication, sign in fails as Secure Mail prompts you that your account has expired.
Your emails fail to sync after you upgrade to Secure Mail for Android version 21.7.0

Secure Mail 21.9.1

Known issues in Secure Mail for Android

When you open an interactive PDF file on devices running Android 12 Beta 4, the file crashes.
If external web browsers are already installed in the Work profile, links open in the external browser apps if Secure Web is not the default browser.

Fixed issues in Secure Mail for Android

You are unable to start Secure Mail version 21.8.0 on devices enrolled in the Work profile mode. This issue occurs if your environment is running Citrix Endpoint Management integrated with Microsoft Intune/EMS.
Attachments in Secure Mail for Android appear dark and the content is illegible if you have enabled dark mode on your device.

Secure Mail 21.9.0

There are no known or fixed issues in this release.

Secure Mail 21.8.5

Known issues

When you open an interactive PDF file on devices running Android 12 Beta 4, the file crashes.
If external web browsers are already installed in the Work profile, links open in the external browser apps if Secure Web is not the default browser.

Fixed issues

There are no fixed issues in this release.

Secure Mail 21.8.0

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for Android, tapping on a Zoom meeting link opens the Microsoft Teams app. This issue occurs when both Microsoft Teams and Zoom are installed on your device.
When you create an Excel file with date format as dd-mm-yyyy and open this file in Secure Mail for Android, the date format is changed to "mm-dd-yyyy".
When you open a PDF file in Secure Mail for Android, the signature does not appear for verification.

Secure Mail 21.7.0

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for iOS, personal contact groups don't sync for non-English languages.

Secure Mail 21.6.0

There are no known or fixed issues in this release.

Secure Mail 21.5.0

There are no known or fixed issues in this release.

Secure Mail 21.4.5

There are no known or fixed issues in this release.

Secure Mail 21.4.0

There are no known or fixed issues in this release.

Secure Mail 21.3.5

There are no known or fixed issues in this release.

Secure Mail 21.3.0

There are no known or fixed issues in this release.

Secure Mail 21.2.0

Known issues

When you click the photo icon to attach a picture to an email that you are composing, the camera app crashes. This issue occurs if your device is running Android 11 and Secure Mail is configured in the Work Profile mode.

Fixed issues

There are no fixed issues in this release.

Secure Mail 21.1.5

Secure Mail for iOS

There are no known or fixed issues in this release.

Secure Mail 21.1.0

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for iOS, tapping on a meeting link that is enclosed within angle brackets does not start the meeting. A blank screen appears.

Secure Mail 20.12.0

Secure Mail for iOS

There are no known or fixed issues in this release.

Secure Mail 20.11.0

There are no known or fixed issues in this release.

Secure Mail 20.10.5

Known issues

In Secure Mail for iOS, the Subfolder (Mail Folders) option is missing in the notifications settings.

Fixed issues

There are no fixed issues in this release.

Secure Mail 20.10.0

Known issues

In Secure Mail for iOS, the Subfolder (Mail Folders) option is missing in the notifications settings.

Fixed issues

There are no fixed issues in this release.

Secure Mail 20.9.5

Secure Mail for Android

There are no known or fixed issues in this release.

Secure Mail 20.9.0

Known issues

In Secure Mail for iOS, the Subfolder (Mail Folders) option is missing in the notifications settings.

Fixed issues

In Secure Mail for iOS, the incorrect time (1 hour difference) appears in meeting invites when the timezone is Arizona.

Secure Mail 20.8.5

Secure Mail for Android

Known issues

On some devices running Android 11, Contacts and Calendar meeting details don't open in full screen.

Fixed issues

There are no fixed issues in this release.

Secure Mail 20.8.0

There are no known or fixed issues in this release.

Secure Mail 20.7.5

There are no known or fixed issues in this release.

Secure Mail 20.7.0

There are no known or fixed issues in this release.

Secure Mail 20.6.5

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for iOS, you can't view text in large size in the message view even though the font size is set as large.
In Secure Mail for iOS, you can't receive notifications when you configure multiple accounts in the same domain.

Secure Mail 20.6.0

Known issues

There are no known issues in this release.

Fixed issues

On devices running iOS, Secure Mail stops syncing after modifying certain HTTP headers on the IBM Traveler server.
In Secure Mail for iOS, when you receive an email, you can't open emails by tapping on the notification. You get the following error: Unable to fetch email.

Secure Mail 20.5.0

Secure Mail for iOS

Known issues

There are no known issues in this release.

Fixed issues

On iPads running iOS 13.4, text selection doesn't work in Secure Mail.
In Secure Mail for iOS, the VoiceOver feature is unable to read emails.

Secure Mail 20.4.5

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for iOS, accessibility sizes are not honored in the mail compose window on iPhones.
In Secure Mail for iOS, you can't add attachments while using the Share In option on iPads.

Secure Mail 20.4.0

Known issues

There are no known issues in this release.

Fixed issues

On devices running iOS, when you paste an image copied from Secure Mail while composing an email, recipients cannot view the image.
In Secure Mail for iOS, you get multiple authentication prompts after migrating to Office 365.
In Secure Mail for iOS, when you edit a calendar invite created on Outlook, you are unable to view the description. If you modify the invite, the description is deleted.

Secure Mail 20.3.0

There are no known or fixed issues in this release.

Secure Mail 20.2.0

There are no known or fixed issues in this release.

Secure Mail 20.1.5

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for iOS, email notifications fail on devices running with the T-Mobile LTE network.
In Secure Mail for iOS, the images in an email aren't resized when the device is shifted from portrait mode to landscape mode.

Secure Mail 20.1.0

Known issues

In Secure Mail for Android, you are unable to log on to GTM from a Calendar event.
In Secure Mail for Android, you are unable to send mails when you attach a file from the Attachments tab.
On devices running Android 7, Secure Mail crashes intermittently when you upgrade to version 20.1.0 from version 19.12.7.

Fixed issues

When you long press the Secure Mail icon on the home screen and then tap Calendar on an iPad, the Inbox appears.
In Secure Mail for Android, you are unable to open Digital rights management (DRM) attachments.

Secure Mail 19.12.5

Known issues

Secure Mail for iOS crashes on devices running iOS 13 while you are viewing certain PDF files.

Fixed issues

On devices running iOS 13, Secure Mail crashes repeatedly. The crash occurs on the latest Apple devices such as iPhone XS, 11 Pro, and 11 Pro Max.
In Secure Mail for iOS, functions such as iPhone's voice dictation and Apple Smart Keyboard arrow keys don't work on iOS 13.

Secure Mail 19.11.5

There are no known or fixed issues in this release.

Secure Mail for iOS 19.10.6

Known issues in Secure Mail for iOS

There are no known issues in this release.

Fixed issues in Secure Mail for iOS

In Secure Mail for iOS, devices running iOS 13 crash intermittently while composing an email.

Secure Mail 19.10.5

Known issues

There are no known issues in this release.

Fixed issues

On iPhones running iOS 13, after users download a file from any MDX app, they cannot open the file in Secure Mail.

Secure Mail 19.10.0

There are no known or fixed issues in this release.

Secure Mail 19.9.5

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for Android, devices running certificate-based authentication are unable to sync large emails.
In Secure Mail for iOS, when you reprovision a user's instance on the IBM Lotus Traveler, the email folders are duplicated.
In Secure Mail for Android, you are unable to receive notifications.

Secure Mail 19.9.0

Known issues

Secure Mail for iOS running Microsoft Intune/EMS crashes when you open an MS Word document using the MS Word app by tapping Share > Copy to Word.

Fixed issues

In Secure Mail for Android, when you delete a read mail, it appears as an unread mail in the Deleted Items of Outlook and Secure Mail.
In Secure Mail for iOS, if a digitally signed email is sent with attachments, the email recipient does not receive the attachments.
Secure Mail iOS crashes when you try connecting to Active Directory Federation Services (ADFS) and Outlook 365.
On devices running Android, you are unable to authenticate Secure Mail. The following error appears: We've encountered an error during Authentication.

Secure Mail 19.8.5

Known issues in Secure Mail for Android

There are no known issues in this release.

Fixed issues in Secure Mail for Android

If a reminder for a calendar event is present in the notification bar, then you do not receive the notification alert for subsequent calendar reminders. If you have created bulk calendar reminders and your device is idle or in the doze mode, Secure Mail calendar notifications are delayed.
In Secure Mail for Android, when you click Settings, a popup appears with a choice to complete the action using Secure Mail or a third party app.
In Secure Mail for Android, certain emails that you receive are dated Jan 1, 1970.
In Secure Mail for Android, you are unable to sync contact groups that contain more than 500 members.

Secure Mail 19.8.0

Known issues

Secure Mail for iOS crashes when you tap an email notification and log in using touch ID. This issue occurs when the app is not running in the background.

Fixed issues

There are no fixed issues in this release.

Secure Mail 19.7.5

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for Android, you receive multiple notifications for an email that has already been read.
In Secure Mail for iOS, the calendar does not sync, and the following error appears: Couldn’t sync Calendar.

Secure Mail 19.6.5

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for iOS, when you respond to an email, only your response was visible in the Outbox and not the entire thread.
In Secure Mail for Android, email content is not rendered correctly.
When you modify the time of a calendar event by dragging and dropping the event and then send an update, the responses of the invitees are not reset.
Secure Mail for Android crashes intermittently while modifying the time of a calendar event by dragging and dropping the event.

Secure Mail 19.5.5

Known issues

In Secure Mail for Android, when the Network Access policy is set to Tunneled - Web SSO, you are unable to establish an HttpURLConnection.
In Secure Mail for iOS, the notification response options do not work when the app is not running in the foreground or the background.

Fixed issues

In Secure Mail for Android, when you send an email, the recipients receive the email multiple times. This issue occurs in devices running Android 8 or later.

Secure Mail 19.5.0

Known issues

On devices running iOS, you are able to connect to Wi-Fi networks outside of the allowed Wi-Fi networks defined in the Allowed Wi-Fi networks MDX policy. This issue allows you to open Secure Mail and Secure Web for iOS through networks that are not listed in the MDX policy.

Fixed issues

In Secure Mail for Android, you are unable to paste email addresses into the To: or Cc/Bcc: fields when you are composing a new email. However, you are able to paste email addresses into the To: or Cc/Bcc: fields when you are replying to an email.
In Secure Mail for Android, you are unable to save account configuration settings when you enroll Android Enterprise devices.
In Secure Mail for Android, the inbox becomes empty after using it for a few days.

Secure Mail for Android 19.4.6

Secure Mail 19.1.5

Known issues

There are no known issues in this release.

Fixed issues

In Secure Mail for iOS, the following error message appears for every mail that you receive: Unable to fetch this message. Please open Secure Mail
In Secure Mail for iOS, you frequently get the following error message Company network unavailable, when they open the application and enter PIN.
In wrapped Android applications, the UserAgent string gets appended multiple times, causing the header size to increase. This behavior results in an error, and the page fails to load.

Secure Mail 19.1.0

Known issues

There are no known issues in this release.

Fixed issues

When Secure Mail fails to connect to the Exchange Server, the following message appears on the email notification banner:

"We are unable to fetch this message as your session has expired. Open Secure Mail to renew your session."

This issue is fixed and the message is updated as follows:

"Secure Mail is unable to connect to your organization's network. Please contact your administrator."
For users running O365 mailboxes, repeatedly performing notification response actions such as Yes, No, May be, or Delete causes Office 365 throttling and the following error message appears:

"The server is busy. Please try again."
In Secure Mail for Android, if you are using the Turkish language, you are unable to send emails to recipients whose address contains the character "I".
In Secure Mail for Android, users are unable to select and highlight the subject line of an email.
In Secure Mail for Android, logon fails if the password contains the character €.
In Secure Mail for Android, when the Sync with local contacts setting is enabled, all your Secure Mail contacts are exported to your native contacts. After syncing, phone fields such as mobile, work, home, work fax, and home fax, do not appear in the correct order. For example, in your native contacts, the fax number appears above the mobile number. Users cannot change this order.

Secure Mail 18.12.0

Fixed issues

In Secure Mail for iOS, when you receive a mail in the Rich Text Format (RTF), certain types of inline attachments and the attachment symbol are not visible.
In Secure Mail for iOS, when rich push notifications are enabled and you turn off and turn on Mail Notifications, the Mail Type option appears intermittently.
If you are running a Client Based Authentication mechanism in your environment, Secure Mail is unable to auto sync emails intermittently. Performing a manual sync fetches a few emails only.

Secure Mail 18.11.1

Fixed issues

In Secure Mail for Android with connections to IBM Notes Traveler 9.0.1 SP 10, emails with attachments remain in the Outbox.

Known issues

In Secure Mail for Android, embedded images are not viewable within an email.
Secure Mail for Android crashes while opening an email whose signature contains an embedded URL, such as file://C:...jpg.

Secure Mail 18.10.5

Fixed issues

When the Enable iOS data protection MDX policy is enabled, you receive the "You have new email" notification intermittently.
On the iPhone XS, attachments can't be downloaded or sent and downloaded images can't be displayed.
When users modify a recurring meeting for accounts running Exchange ActiveSync version 16 and later, the meeting does not update in Exchange Server. As a result, the meeting is not synchronized between Secure Mail and Outlook.

Secure Mail 18.10.0

Fixed issues

In Secure Mail for Android, users cannot view inline images that point to servers other than Exchange servers.
In Secure Mail for Android, the PIN number was not appended with the dial-in number while joining Webex meetings. You have to manually type the PIN number.
Secure Mail for Android crashes while trying to export Secure Mail calendar if your personal calendar is not configured.
On the iPhone XS, in Secure Mail for iOS, attachments can't be downloaded or sent and downloaded images can't be displayed.

Secure Mail 18.9.0

Fixed issues

The client workstation changes randomly with every NT LAN Manager (NTLM) authentication request.
Secure Mail sync on Android P intermittently stops working when the device is in battery saver mode.
Secure Mail crashes while trying to export Secure Mail calendar if your personal calendar is not configured.

Secure Mail 10.8.65

Fixed issues

When FIPs is enabled and users run Secure Mail for iOS on an iOS 11.3 device, the Cut and Copy, and Paste MDX policies don't work.
When using Secure Mail for iOS on shared devices, new users can view the emails of a previous user even though that user is not signed in. If the new user taps a folder to refresh the display, the previous users' emails no longer appear.

Secure Mail 10.8.60

Fixed issues

Note:

Secure Mail versions 10.8.25 to 10.8.60 include no known issues.

In Secure Mail for iOS running on IBM Lotus Domino servers, you are unable to use the search icon in your inbox.
When users enroll a device running Secure Mail for Android with Intune company portal, Secure Mail stops working.
Secure Mail for iOS crashes while syncing many mail folders from the server during an FTU flow.
In Secure Mail for iOS, print preview of PDFs appear smaller.
In Secure Mail for Android, multiple email IDs are not auto populated while responding to emails.

Secure Mail 10.8.55

Fixed issues

In Secure Mail for iOS, the Week view of the calendar renders incorrectly on an iPad Pro, when viewed in the landscape mode.

Secure Mail 10.8.50

Fixed issues

Secure Mail for iOS cannot save video files to ShareFile.
When you enable push notifications in Secure Mail for Android, you do not receive notifications for new emails. This issue occurs intermittently.

Secure Mail 10.8.45

Fixed issues

Secure Mail version 10.8.45 included no fixed issues.

Secure Mail 10.8.40

Fixed issues

In Secure Mail for iOS, a duplicate notification appears intermittently for every new email you receive.

Secure Mail 10.8.35

Fixed issues

In Secure Mail for Android, automatic synchronization stops intermittently. Users must synchronize manually for some new messages from Office 365 servers to appear in Secure Mail.
In Secure Mail for Android, even though you disable email notifications in Secure Mail for email and calendar events, the notifications still appear, and a sound notification occurs.
When you create an All-day event using Secure Mail for Android, incorrect dates are displayed in your outlook calendar.
In Secure Mail for Android, Exchange personal contact groups are not synchronizing to the app.
When SSO is configured, Secure Mail for Android SSO to Exchange fails. Users are prompted for a password to sign in.

Secure Mail 10.8.25

Fixed issues

In Secure Mail for Android, a delay occurs when users sync a calendar invitation with Office 365. The issue occurs when creating or updating a calendar invitation.
In Secure Mail for Android, when users type a single letter in the cc: field and then tap Send: Secure Mail sends the message to the first user in the list of frequently used users. Instead, a notification should appear that the cc: field entry is invalid.
On Zebra T51 devices running Android 7, users cannot install the Citrix Launcher app.
When NetScaler® Gateway is configured with certificate-based authentication: In Secure Mail for iOS, every time users receive a new message, the "You have new mail" message appears. Instead, the notification should list the sender name, subject, and body preview.

Secure Mail 10.8.20

Fixed issues

If the Intune Company Portal app is installed on Android devices enrolled in the MAM-Only mode, in Endpoint Management, Secure Mail attempts to redirect to the Microsoft Login page. The following error message appears: "Did not receive any configuration for the app. Please contact your administrator to configure the app."
In Secure Mail for Android, sign in fails if your user name or password contains special characters such as ä, ö, ü, or €.
On Android devices, a restart allows you to bypass authentication to access Secure Mail.
In Secure Mail for Android, when you reply to emails before inline images are downloaded, mails are stuck in your Outbox. This issue occurs when the Show pictures setting is enabled in your settings.
In Secure Mail for iOS, if the IRM policy is ON and email classification is set to Protected, you are not able to view attachments when you download the complete mail.

Secure Mail 10.8.10

Fixed issues

After updating to Secure Mail 10.7.25 for iOS, the Message-ID header is missing brackets (< and >).
In Secure Mail for iOS, after users add a calendar invitation from Outlook, intermittently the app crashes. This issue occurs if your calendar invitation contains an Emoji.
On iOS, after upgrading Mobile productivity apps to 10.7.30, if Log Level is set to 11 or higher, Secure Mail is slow and crashes if left open.
In Secure Mail for iOS, duplicate notifications appear intermittently if the Control Locked Screen Notifications policy is set to Count Only.
In Secure Mail for Android, when users copy and paste four or more email addresses in the To: field, the app crashes.