If you’re getting a “This message contains an event that has already been processed” warning in Thunderbird invitations, this post is for you.
Thunderbird Calendars – the definitive guide
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ʇıɐɐɹpɯo pɿǝɹǝʍ ǝp ɹɐɐʍ
If you’re getting a “This message contains an event that has already been processed” warning in Thunderbird invitations, this post is for you.