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Collected or Groups in Address Book are NOT now recognised.

seangalbally
seangalbally
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When I wish to send an email to a group, I start to enter the group or collected address and as previously the required group from Address Book is shown, but now in red. I try sending and I get the message that the group is not a valid email address since it is not of the form user@host and must be corrected. I checked the address book and the collected emails are all there just as when the program was working correctly before being updated. I tried reinstalling Thunderbird - no luck. I do not want to start typing in a group of addresses individually now. If this is so I will just have to use another program.

When I wish to send an email to a group, I start to enter the group or collected address and as previously the required group from Address Book is shown, but now in red. I try sending and I get the message that the group is not a valid email address since it is not of the form user@host and must be corrected. I checked the address book and the collected emails are all there just as when the program was working correctly before being updated. I tried reinstalling Thunderbird - no luck. I do not want to start typing in a group of addresses individually now. If this is so I will just have to use another program.

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Fabián Rodríguez
Fabián Rodríguez
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Several other people have sent in the same support request as you, noting this happened after they upgraded to version 31.1.

This has been reported as Bug #1060901.

The exact error message is: XXXX is not a valid e-mail address because it is not of the form user@host. You must correct it before sending the e-mail.

This happens in Thunderbird 31.1.0 when your mailing list description includes several words separated by spaces.

Although not ideal, these workarounds should let you use your mailing lists until a proper fix is implemented:

  • While composing an email open the address book and select the list you are trying to send to, highlight all the names in the list and drag them to the To: box. This uses your existing data without modifying it.
  • Replacing the blanks " " between the words in such lists' descriptions with an underscore "_". This requires modifying your mailing list(s) description(s).
  • Downgrade to a previous version and disable automatic updates (Windows)

Installing a previous Thunderbird version and preventing automatic upgrades

In Windows Thunderbird updates are automatic by default. To avoid similar situations in the future, you could change that and decide to have a more conservative approach to upgrades.

Before trying anything, make a backup of your current Thunderbird profile.

You can uninstall the current Thunderbird version via Control Panel > Programs and Features and reinstall a previous version, download it from here:

Click on the type for your OS. eg: If using Windows select 'win32' then select the language eg: en-GB = English british then download the .exe file

You can customize automatic updates behavior, however, it's under Tools > Options > Advanced > Update.

My suggestion would be to set it to Check for updates, but let me choose whether to install them., specially if you depend on email for critical / important business or personal matters.