Read signed and encrypted mail on Android
Open an S/MIME mail in the XgenPlus app. If you have the right certificate, it decrypts and a banner shows whether the signature was verified. Tap the banner for details. If it says Certificate not trusted, tap Fetch trust certificates and the app checks again.
For: EveryoneWebAndroidSecurity
How to read signed and encrypted mail on android
Where: Open mail › banner
- Open the signed or encrypted mail.
- Read the banner above the message.
- Tap the banner for more details.
- If the signature is not trusted, tap Fetch trust certificates.
When to use it
Priya opens a signed and encrypted mail from a colleague. The banner says it was decrypted and the signature was verified, so she acts on it.
Options
| Banner | What it means |
|---|---|
| Signature verified | The signature is valid and the signer is trusted. |
| Certificate not trusted | The signature is valid but the signing authority is not trusted on your phone. |
| Certificate revoked - do not trust | The signer's certificate has been revoked. |
| Signer does not match sender | The certificate belongs to a different address. |
| Certificate expired | The certificate was not valid on the date of the mail. |
| Unable to verify signature | The signature could not be checked. |
Good to know
- Revocation checks are only as current as the revocation lists on your phone.
- Decryption needs your own certificate.
Common questions
Why can I not read an encrypted mail?
The matching certificate is not on your phone. Fetch your certificate in End-to-end encryption settings. If the mail is old, a previous certificate may be needed, and the app fetches those for XgenPlus accounts.
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Updated 2026-10-28