Android

Requirements and Android features of the SipherMail app: biometric lock, push notifications, tablets and stylus signatures.

Requirements#

  • Android 7.0 or later.
  • Phones and tablets are both supported.

Biometric lock#

You can require your fingerprint or face unlock to open the app.

  1. Open Settings > Biometric Lock.
  2. Turn on Enable biometric lock. The switch will not turn on if no biometrics are set up on the device.
  3. Pick Auto-lock after, from immediately to never.

The same screen has Blur in app switcher, Lock on account switch and Require on app open.

Push notifications#

Allow notifications when the app asks. Choose what to be told about in Settings > Notifications: new mail, VIP contacts only, quiet hours, the new-mail sound, and whether the sender, subject and preview appear. If alerts do not arrive, check the notification settings for SipherMail in Android’s system settings. See Notifications.

Tablets#

On a tablet, or any wide window, the app uses a multi-pane layout with folders, the message list and the reader side by side. Narrower windows use two panes, and phones show one screen at a time.

Stylus signatures#

On a tablet with a stylus, such as an S Pen, you can draw a signature in the compose screen.

  1. Start a new message.
  2. Open the signature picker.
  3. Choose Draw signature and draw.
  4. Save. It is stored as a signature named "Drawn" with the date.

Draw signature appears once you have at least one signature and the device detects a stylus.

Subscriptions#

If you subscribed through Google Play, manage it from Settings > Account & Billing > Manage Subscription. See Billing and plans.

Last updated 1 November 2026