Hi there Peter. My name is*****'m sorry that you're having this problem. It would be my pleasure to assist you. Can you tell me please what version of Thunderbird you have and what your Operating System is?
If you're not sure, you should be able to use one of these links to find out. Or, if you prefer I can connect to you remotely and work on this while you watch.
Can you click this link and tell me what you see please?
From the Apple menu, choose About This Mac. Your version of OS X appears directly below “OS X
Have you checked to see if there are updates available for Windows and updates avaialble for Thunderbird? Often there will be updates with "bug fixes" that address new developments in the way that service providers such as Verizon Fios work. I recommend that you begin troubleshooting by making sure that you are using th emost recent version of Thunderbird, and checking for and installing all appopriate updates.
If you'd like, I can perform these steps for you while you watch via the Premium Service of Secure Remote Assistance. This is completely optional. If you choose to do this, I can, with your permission, remote into your computer while you watch and work on the issue for you. If you do not choose to take this service, but need more help, we can continue here.
Please also check to ensure that you are using Port 465 to send mail.
Configure Thunderbird to use port 465 for sending email
In order to change your port settings to port 465 in Thunderbird, you must do the following:
Open Thunderbird, select the Tools menu and from the drop-down list select Account Settings.
After you have completed the above steps for Thunderbird, you will be configured to use port 465 to send email with much greater safety and protection from spam and viruses.
You are most likely correct. Please give me a few moments to investigate further and see if I can find anything further. If I don't then I would suggest that you open a trouble ticket with Verizon AND with Thunderbird and tell them everything that you told me, including the version info for Thunderbird and Windows and the date that the problem first began, as well as the fact that you have tried creating a new list, with the same results.
You are correct. I apologize. Most email services offer a paid version with support but Mozilla is all volunteer. I had forgotten that. I am not seeing anything yet. You are definitely on the latest version. Have you considered temporarily using a different email client other than Thunderbird? I would suggest possibly Eudora. If you test with it and it works correctly with a test email list, then I should be able to assist you with exporting your Thunderbird lists and importing them into Eudora. Please do go ahead and enter a ticket with Verizon Fios to see if they have suggestions, but also consider Eudora while we wait for a fix if they don't have one.
Yes, we should be able to do that with a minimum of difficulty. May I ask what your sending email address is? Does it end in verizon.net or aol.com or something else? Recently Verizon began the process of migrating verizon.net addresses to aol. Were you affected by that?
Ok. After further review it seems to have been only for customers in Texas, Florida, and California. If you do elect to install Eudora and test, you will need to export the address list as a csv file and then import as a csv file in to Eudora. I'm not sure how well that would work. Gmail may have more limitations than Verizon and you may have a greater number of bouncebacks. It is certainly worth trying though. Please keep me posted on how things progress.
If the information that I have provided has helped,
If the suggestions that I have provided have been helpful, please kindly take a moment to rate my service. As an independent contractor for just answer, I do not receive credit for my answer and I am not compensated in any way without a rating of at least 3 stars. You can provide a rating by clicking on the stars and then clicking on submit. Please remember, don't rate until you are satisfied. If you need more help, please let me know so I can continue to work with you or allow me to "opt-out" so that other experts can assist you. Your complete satisfaction is my goal! Thank you!
If you are planning to test using gmail servers you could use gmail as your client, however, I think Eudora is about the only thing you will find short of Outlook that will have all of the features that you are used to having with Thunderbird.
Thank you. If my suggestions don't help, rather than issue a negative rating, please allow me to opt out and see if another expert can help, or request a refund for you.