Hello everyone, Do you know of any way how to use the sensitivity headers (normal, personal, private, confidential) on Thunderbird? The [https://addons.thunderbird.net/en-GB/thunderbird/addon/sensitivity-header/?src=ss Sensitivity Header] is not compatible with the current version of Thunderbird and Thunderbird itself does not seem to have this simple function. Is there any Thunderbird developer here? I suppose this is not a compliacated implementation (you already have options for receipt and delivery status headers, I suppose adding the sensitivity tag wouldn't be anything hard). Would you please consider this for your next release? Thanks a lot!