France's tourist visa was refused. Is it necessary to appeal again? What is the process of appeal? Do I need to send an email or a letter?

It is generally not recommended to appeal after the French visa is rejected, because the appeal time is very long, which may directly delay your trip. Another point is that the appeal success rate is very low, so it is not recommended to waste this time. You might as well apply again.

But you can sign it at any time after being rejected. It doesn't matter if you sign it after being rejected. The key is whether your binding force is stronger than last time. If the binding force is more than last time, you can sign it again at any time. If you don't change anything, that is, the binding force remains the same as last time, even if you sign in 10, the result will still be rejected.

In fact, whether the visa is passed or not depends mainly on whether we can convince the visa officer that we will definitely come back after going to Europe. If the visa officer believes that we will definitely come back after going to Europe, he will give us a visa!