

If you change this setting you must restart Thunderbird. Thunderbird will enable it when possible.

This box is checked by default but the feature isn't available for all graphics processors. This makes Thunderbird faster since your computer's graphics processor is much better than your computer's main processor at displaying these types of things.

Use smooth scrolling: Smooth scrolling can be very useful if you read a lot of long messages.Some people find this annoying, so autoscrolling can be disabled with this option preference. Use autoscrolling: Autoscrolling is a useful feature which allows you to scroll by clicking the middle mouse button (usually the scroll wheel) and moving the mouse up or down.

Allow return receipts for some messages: For each of these cases, you can set Thunderbird to always send a receipt, ignore the request, or choose Ask me, which will make Thunderbird display a prompt when you open the message.Never send a return receipt: If someone sends you a message that contains a request for a return receipt, select this option preference to make Thunderbird always ignore the request.When I receive a request for a return receipt: Move it to my "Sent" folder: Select this option preference to make Thunderbird automatically move return receipts to your "Sent" email folder.Select this option preference to leave return receipts in your Inbox email folder. Leave it in my Inbox: Return receipts arrive through email.When sending messages, always request a return receipt: Check mark this setting to make Thunderbird automatically request a return receipt on every message you send.A return receipt adds a request with your message to notify you when the recipient has opened the message.
