Mails are sorted chronologically in Thunderbird by default but they are not grouped. Grouped means special folders for mails that arrived today, yesterday, last week, two weeks ago and old mail. This way of sorting mails is incredibly helpful for a better overview in my opinion.
You can enable that view by clicking on View > Sort By > Group By Sort G. Every mail that you have received will be sorted into one of the five special folders mentioned above. Found this little tip at mmynews, a German tech related blog. Take a look at the screenshot to see how this looks in Thunderbird

The view menu offers several other ways to display mails in Thunderbird. You can enable a threaded view for instance or sort the mails by another variable than date. Possible variables include Sender, Subject, Tags and Priority.
Related posts:
Thunderbird Remove Duplicate MailsAutomatically remove duplicate mails in Thunderbird
Show message count of all folders in Thunderbird
Thunderbird Tip: How to archive old messages
Redirect Mails in Thunderbird
2 Responses to “Group Mails in Thunderbird chronologically”
Trackbacks/Pingbacks
-
[...] Martin von gHacks hat einen schönen Tipp parat: Einfach bei Thunderbird unter “Ansicht” – “Sortieren nach” – “Gruppiert nach Sortierung G” (was auch immer Sortierung G sein soll) einstellen. Schon werden die Emails sortiert dargestellt nach “Heute“, “Gestern“, “Letzte Woche“, “Vorletzte Woche” und “Ältere Nachrichten“. Sieht schön aus. [...]


Very nice tip!!