Hi there! I suggest to add the option to set CC and BCC separately/additionally for each identity on Thunderbird for Android. Reasons: 1. Compliance and archiving obligations Certain professions (legal, finance, healthcare) are required to archive outbound communications, typically via BCC to a dedicated archive address. This obligation is identity-specific — the private address is unaffected, the professional one is not. Setting BCC manually on every message is error-prone and unreliable in practice. 2. Team mailboxes and role-address routing When sending from a role address (e.g. orders@, support@), users frequently need to CC or BCC a shared team mailbox or ticketing system. This is structurally tied to the identity, not to individual messages. 3. Per-account self-BCC Many users maintain a manual sent archive in a second account (e.g. a local IMAP mailbox). Which address receives the BCC depends directly on the sending identity — a single global setting cannot cover this. 4. Error prevention in multi-identity workflows Without per-identity defaults, the user must manually check and set CC/BCC on every message. With three or more identities carrying different requirements, this is systematic cognitive overhead that reliably produces mistakes — missed copies, wrong CC on the wrong identity. 5. Consistency with the existing identity model Thunderbird already models identities as first-class configuration units with signature, reply-to address, and display name. CC/BCC defaults are conceptually equivalent — their absence is this rather an inconsistency in the existing model. The option to define various identities is a great feature and a "selling point". It is a distinctive option, which moved me from inbuilt Samsung e-mail client to Thunderbird on my Android mobile. I'm using Thunderbird 19.2 for Android app. At work I have one Public and internal identity each one will BCC different addresses. Regards.
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