I am wondering if our posts are actually getting to a team that is responsible for fixing these bugs?

Have hopefully sent details to Thunderbird Bugzilla but not quite sure whether it went as I clicked the 'Submit' button which then changed to 'Submitting Bugzilla' and was still showing this some while later.

I received a solution today from an engineer. Permanently disable all add-ons. Then reconstitute your address book, making sure ONLY THE EMAIL/GMAIL ADDRESSES SHOW. REMOVE THE NAMES OF THE ADDRESSEES AND ALL PUNCTUATIONS SUCH AS '><.

I have a group of 20 recipients. TB would send to only about 8 of them if I did not do the steps in the first paragraph. It removed the other 12 from my group. When I added back the missing addresses it would not send to anyone, instead sending me the non-aschii character error message.

It's working for me. Good luck.

This is not a good solution. I have Enigmail and Lightning as add-ons, and wouldn't want to disable either of them. Come on guys, FIX THE BUG!!! Don't give us some BS workaround. And BTW, > and < are legitimate ASCII characters, decimal numbers 62 and 60, respectively. See http://www.asciitable.com/

@Deni66. No you are having a discussion between yourselves. I have no idea what to file in a bug report other than 4 or 5 people cant send mail because of the error message. So what steps to reprodice do I suggest. I works for me.

@rc38business Seriously that advice did not come from this web site. Your only interaction woith this site is the post where you complain about the solution. It sounds like it saw mustered up by someone that did not even understand your question, or had done a quick google search.

@terry.rickard You neither asked for confirmation of the rubbish solution RC38 posted, nor offered anything better. given that < and > have special significance in email almost all addresses will have them in the address book, but having them mismatched (there must be a > for each< so the brackets are closed <>) can be a source of trouble.

Standard diagnostics would require that you test your issue in Thunderbird safe mode, windows safe mode and both as this is only a very small group of users with an isue.

• Restart Thunderbird with add-ons disabled (Thunderbird Safe Mode). On the Help menu, click on "Restart with Add-ons Disabled". If Thunderbird works like normal, there is an Add-on or Theme interfering with normal operations. You will need to re-enable add-ons one at a time until you locate the offender.
• Restart the operating system in safe mode with Networking. This loads only the very basics needed to start your computer while enabling an Internet connection. Click on your operating system for instructions on how to start in safe mode: Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, OSX

If safe mode for the operating system fixes the issue, there's other software in your computer that's causing problems. Possibilities include but not limited to: AV scanning, virus/malware, background downloads such as program updates.

@boyd-lee. I can't find it. Go to your bugzilla account, click on the my dashboard and make sure the drop down is set to "new reported by you". What is the bug number you reported?

@All I would suggest you get with comparing mail providers, anti virus products add-ons, operating system versions etc and see if you can find some item you all share. When you are a half a dozen out of 10 or 20 million, finding what is the real issue can be somewhat difficult

Thanks, Bug No 1634168

Most of e-mail addresses I have created as address book has has non-ASCII characters and I have used those e-mail addressed without any trouble until just recently. The problem has happened when I have updated my Thunderbird. I am not sure which version it is. I want to get my Thunderbird to previous version which I did not have this problem. How can I do that? Please advice. I have more than 6000 e-mail addresses and it does not make sense to change those addresses without having non-ASCII characters so.

Or, please update the current Thunderbird to support non-ASCII characters in addresses as it could before.

I am looking forward to hearing any feedback soon.

i started having this problem a week or so ago. it seems to manifest itself with a large email attachment to many recipients. if i choose a half dozen or so recipients ..zoom it is sent. if there is a large number of recipients up jumps the error. i tried several times to delete the recipients one by one to "find " the non ascii character. all recipients deleted still a problem. yahoo mail did the same job and the email was sent to many recipients. i do not favor yahoo mail and i am NOT going to outlook express

by the way i do not have ANY add-ons in my version

Here is a work around that I have been using satisfactorily for some weeks since I first posted my problem with mailing list and so called non ASCII characters. 1. Write a new message and insert all the addresses it is to be sent to in the 'To' box remembering to BCC them if you don't want others to see the other addresses. 2. Send the email. 3. Next time you want to mail to this group of people find the email you previously sent (keep a copy amongst your 'Drafts' if you do this regularly, 4. Go to Menu bar at top of screen & select 'Message / Edit as new message' 5. In the screen that opens all the Recipients you sent it to last time will be showing in the 'To' box and you can edit them in or out here. 6. Remember to change the 'Subject' box if you need to. 7. Delete the old message and insert your new message, 9 Send.

All done.