To view all the unread emails across all folder, scroll down to locate views and select 'Unread View'. In a particular folder, click the Filter by icon in the top, and select 'Unread' to view only the unread emails in the folder. You can also click ...
You can set the default encoding for your Outgoing mails in the Settings page. Encoding can be set based on the language in which you are composing the message.
You can set a default behavior for your Outgoing mails by specifying the Font family and Font size in the Composer settings. To set your System Font as your default composer font setting, go to Settings > Compose > Compose Font Options. Provide the ...
If the emails in the same conversation, but in a different folder, are still unread, the conversation will be indicated unread in other folders also, when 'Conversation across Folders' is chosen. Refer here for more details.
When the emails are sent from your account, in case the recipient server does not accept the emails due to temporary errors, such emails will be moved to Retry queues. The emails will not be bounced back to senders for temporary errors (451.x.x). ...