Group conversations by date

[LorenDB]

Similar to https://connect.mozilla.org/t5/ideas/thunderbird-group-by-date/idi-p/14697, I suggest adding a feature to Thunderbird Android to group emails by date. This makes it much easier to find emails. 

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.