If you are using a Pop account then it will only download whatever is new in the server Inbox.

So when people say - check the Junk/Spam folder they mean the one on the server which you can only see if you logon to the webmail account via a browser. If server is putting emails into server Spam then no pop account will ever see them. Also, many servers will auto empty Spam periodically, so you might miss them.

Let's be very clear, if your webmail account is not receiving the emails then Thunderbird cannot display them. So first you need to be certain they are being received.

Logon to webmail account and get one of those companies to send you newsletter. Do you actually receive the email?

If your webmail account is opperating close to maximum quota, then it is possible some emails cannot received by server until some space is made available. This particulary effect Pop accounts because old emails may still be on server. Basically if using Pop then access webmail and delete a load of old emails.

Thank you for your reply but I do not understand what to do. Do you mean my server's webmail or something else in Thunderbird.

Thank you for your reply but I do not understand what to do. Do you mean my server's webmail or something else in Thunderbird.

Not Thunderbird. You need to logon to your server webmail account via a browser. Then you can check to see what is arriving on the server. If newsletter is not arriving on server then it explains why Thunderbird cannot download it. If it arrives on server, but server spam filters put email in server Spam folder and you use POP in Thunderbird, then Thunderbird cannot download it and you need to move email into the Inbox in order to get it downloaded. If server has too many emails and on occasions is full until something gets deleted then server cannot receive emails until there is space. So if you have a Pop account in Thunderbird you may need to delete some old emails off the server.

I have the exact same problem. I don't have POP acc't, the newsletters are not on the Server (I checked); nor have I exceeded my email storage limit. When I contact whoever is sending the newsletters (WAPO, in this case), they reset something, and I get them for awhile-- maybe for a day or two-- then, I don't. Right now, I am "repairing" my inbox, wondering if that may help? (It didn't, before). I think there is some incompatibility between Thunderbird and WAPO, but I can't imagine what. This is a new problem for me; last year, I could receive those same newsletters, but now, I see a couple of people on here who seem to have this same problem.

I actually got on to my IT people I use to fix problems. There was nothing wrong on my end and when he checked the server my box was not full and there were no problems with it. However after 8 months I started getting the emails again. So obviously there was something wrong on the senders end. I cannot remember the other ones I stopped getting but after 9 months I am over it now.

I have the exact same problem. I don't have POP acc't, the newsletters are not on the Server (I checked); nor have I exceeded my email storage limit. When I contact whoever is sending the newsletters (WAPO, in this case), they reset something, and I get them for awhile-- maybe for a day or two-- then, I don't. Right now, I am "repairing" my inbox, wondering if that may help? (It didn't, before). I think there is some incompatibility between Thunderbird and WAPO, but I can't imagine what. This is a new problem for me; last year, I could receive those same newsletters, but now, I see a couple of people on here who seem to have this same problem.

If you are using imap then you can only see whatever is on the server. If you cannot see it via webmail using a browser then it does not exist so there's no way Thunderbird can display something that does not exist.

Sometimes it might look like same problem but it isn't.

If server is not receiving mail then a possibility is the server Spam Filters are not allowing the server to receive the emails. It might help if you accessed webmail account and see if you can set the email address as not spam - aka good sender.