can't open new message - blocked by last message URL
After reading and deleting a message I cannot open the next message because the URL from last message is on the URL line and, I assume, blocks opening the new message.
Opaite Mbohovái (1)
Thunderbird is an email client, and doesn't have a 'URL line'.
In case you're using Firefox as your web browser, and you do have a question about it, please say so. Then we will move your question to the Firefox support queue.
If you're accessing your emails through webmail, please contact your email provider for help.