In Sent folders a "RFreq" column is added for the Recipient Frequency.
The numbers displayed in the column are the number of messages by that same sender (or to the same recipient for the Sent folder). So if you have three messages from "[email protected]" in your inbox, the number will "3". Or if your wrote to "[email protected]" four times and these four messages are in your Sent folder, the number will be "4".
This helps identifying who sends you a lot of e-mail, including unwanted e-mail.
This is a "no frills" add-on. No configuration, only one option.
In the configuration editor you can edit: extensions.Sfreq.compareEmailOnly
true (default): Comparison by e-mail only:
Donald Duck <[email protected]> and Don Duck <[email protected]> count as the same address.
false: Comparison by full sender address:
Donald Duck <[email protected]> and Don Duck <[email protected]> count as two different addresses.
This is useful for mailing lists where all messages come from the same address.
A restart is required for changes to the option to take effect.
For Thunderbird 60.0 please visit the "All Versions" section to download a compatible version.