The invention relates to a computer-implemented method and
system for secure e-mail management, employing an indivisible sequence of interdependent modules, enabling automated downloading of messages and attachments via IMAP, POP3, proprietary or future-compatible protocols, authenticated through OAuth2 and mandatory multi-factor
authentication (TOTP or FIDO2-compliant
biometrics). Multi-layer integrity
verification is performed prior to
server deletion, using cryptographic checksums, error correction codes, and
Merkle tree validation, generating immutable audit logs. The messages are stored locally in encrypted databases with hardware-bound keys managed by TPM, HSM, secure processor enclaves, or equivalents. Deletion is conditioned on multi-stage cryptographic
verification and deletion tokens linked to audit logs; omission of any step invalidates the operation. Configurable grace periods with cross-device
undo and an offline graphical interface are included, all inseparably integrated to ensure security,
traceability and the technical compliance of the invention.