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I do this with Thunderbird (IMAP access to gmail) and the Header Tools Lite plugin. Works for me. https://addons.mozilla.org/en-US/thunderbird/addon/header-too

by ape4 13y ago

I do this with Thunderbird (IMAP access to gmail) and the Header Tools Lite plugin. Works for me. https://addons.mozilla.org/en-US/thunderbird/addon/header-tools-lite/ https://addons.mozilla.org/en-US/thunderbird/addon/header-to...