Email, compose address not working

[Oddbodkin]

Same here.

Stopped working again today.

[jetk]

Google AI question

Firefox when using BT email the "To:" field not being completed when selecting a contact, the TO field only contains the characters typed and marked illegal"

Answer

This specific error, where the

"To:" field displays only your typed characters in a red box marked as "invalid" or "illegal," is a known compatibility glitch between Firefox (v147.0 and later) and the BT Webmail interface. When you select a contact from the dropdown, Firefox fails to pass the full contact object to the field, causing it to reject the partial text as a malformed address.

Firefox Update Conflict: The issue became widespread following the Firefox 147.0 update in early 2026. It appears to be a breakdown in how Firefox handles the JavaScript selection event used by BT's mail platform.

[Hammergirl]

I'm having the same issue. Phoned BT Premium Mail who said no-one else had reported the problem and that the issue likely to be my PC!

Cleared cache, still the same problem. Logged in using Chrome instead of Firefox - no issue! Seems to be a Firefox problem.

[Keith19]

Chrome . Microsoft Edge , Gmail all seem to be OK , just Mozilla Firefox with the problem

[licquorice]

Which, if anybody bothered to read the thread rather than blindly posting, they would have been informed of that countless times.

[Oddbodkin]

licquorice

Being snarky helps nobody.

Nor can we be expected to read through the whole thread, especially when different threads keep being merged.

[licquorice]

Of course you can, that's the whole point of a forum!!!

[gg30340]

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@Oddbodkinwrote:

licquorice

Being snarky helps nobody.

Nor can we be expected to read through the whole thread, especially when different threads keep being merged.

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So you expect others to read it on your behalf and spoon feed the answers repeatedly for those that can not be bothered to read before they post! How very "community " minded!

[CHerrod]

Does anyone have any news on when or indeed if Firefox are going to fix this issue please.

It is a recognised problem that when using Firefox BT email does not automatically fill in the email address if you start putting in the name - it is necessary to go through a round about route to get there.

Many people have had tot the same issue - which was corrected for one day and then reverted back. I have persisted with Firefox as I m used to the browser and like it but will have to change of this doesn't get sorted. 

Any news heard out there?  Thanks

Charles

[gg30340]

Firefox and BT are working on a fix. It is not known how long that will take.