Rated 1 out of 5 stars

Nonsensical UI, barebones calendar system support, user-hostile methods for creating new calendars. Will allow for reminders from months in the past to display (who needs a 2 month old calendar reminder!?). No way to view an event without going into a full edit mode. Attendee support buried in a separate tab, Impossible to easily schedule events across multiple timezones. Location field doesn't offer validation against a mapping service. Doesn't pick up ical files on disk. Can't believe how bad this is given how long it has been around for.

Rated 2 out of 5 stars

Potentially good add-on for native calander support. But the rating goes down due to poor integration with external ical-formats such as from Outlook by not being able to parse html links in meeting invitations properly, not being able to accept invitations (gives errors), not supporting meeting changes (gives error), and also quite often for invitations from Microsoft Teams the invitation is not interpreted at all, showing a blank email. Sorry, but the overall experience for important business is that it just does not work.

Rated 4 out of 5 stars

Fonctionne très bien.
Ne pas oublier pour le Calendrier si vous souhaitez synchroniser avec Google Calendar, votre smartphone (android) ... il faut installer le module Google Agenda (https://addons.mozilla.org/thunderbird/addon/4631)

Rated 4 out of 5 stars

can't sync google calendar

Rated 1 out of 5 stars

Ne fonctionne pas du tout.
Impossible de me connecter à mes contacts Google.
N'ai pu le faire qu'en revenant à TB 60

Rated 5 out of 5 stars

I was having the issue with calendar not showing up properly (items and sync greyed out, no calendars listed). And the solution that worked for me was the one commented by dbstraffin :

Start TB in safe mode and resetting toolbars and controls.

Rated 2 out of 5 stars

Normally this works great, but for some reason it just won't launch or load anymore, even after a manual refresh of TBird, this extension will not run. Really sad since I praised it and TBird to others. I suppose I may not be able to until this gets fixed.

This review is for a previous version of the add-on (68.7.0). 

Rated 5 out of 5 stars

This extension helps make Thunderbird a complete email client and works seamlessly. Only one nuance on Ubuntu 20.04, with the dark theme enabled the mini calendar's month and year are not visible.

This review is for a previous version of the add-on (68.7.0). 

Rated 1 out of 5 stars

Hilfe erhält man gar nicht! Probleme werden nur ein paar im Support abfgehandelt, dann Schluss! Dabei sind es grade die speziellen Probleme. Kommt noch dazu dass man englisch können muss. Bleibt mir nur mich von mozilla zu verabschieden! Es gibt andere mit richtigen Support!

This review is for a previous version of the add-on (68.7.0). 

Rated 1 out of 5 stars

Bonjour

Utilisateur de Thunderbird - en remplacement d'Outlook - depuis 24h, je viens d'installer le module Lightning dont j'ai lu qu'il donne à l'agenda le look de celui d'Outlook. Il n'en est rien. De plus, je ne sais pas comment modifier ses options s'il y en a...
Pouvez-vous aider ?

This review is for a previous version of the add-on (68.7.0). 

Rated 4 out of 5 stars

Module complémentaire très performant, compatible avec le calendrier Google et très fiable
4 étoiles, pour ne pas en mettre 5 car rien n'est jamais parfait !

This review is for a previous version of the add-on (68.5.0). 

Rated 3 out of 5 stars

Nach TB Update auf 68.0 waren alle Kalender ausgegraut. Behoben durch den Tipp von dbstraffin
Starten des abgesicherten Modus (Shift-Taste halten und auf Thunderbird klicken (hold shift key)) im nun erscheinenden Fenster Häckchen bei Alle Symbolleisten zurücksetzen (Reset toolbars and symbols)
-> Änderungen ausführen und neu starten (Make changes and restart)
Viel Erfolg

This review is for a previous version of the add-on (68.5.0). 

Rated 4 out of 5 stars

This solution by Sebastian it works:

When I close Thunderbird and under
"C: \ Users \ * username * \ AppDataLoca \ Thunderbird \ Profil \ * profilname \" delete the folder "StartupCache" and restart Thunderbird everything works normally again. Until I close Thunderbird again and restart ... then the problem starts again.

After reinstalling Lightning 68.4.2 it works fine again. No missing calendards and all calendar entries are back again and I can edit them.

Thank you Sebastian!!

Remember, Lightning 68.4.2, not the last one.

This review is for a previous version of the add-on (68.5.0).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

In my case, to solve thunderbird compatibility with google calendar...
I just closed thunderbird, adn removed the "calendar-data" and "startupCache" folder... and after I restarted thunderbird again!

This review is for a previous version of the add-on (68.5.0). 

Rated 4 out of 5 stars

Great tool but I had the same problem as dbstraffin on March 6, 2020. Same solution.

Thx, dbstraffin for figuring that out!

This review is for a previous version of the add-on (68.5.0). 

Rated 1 out of 5 stars

Lightning was a really good calendar application... before.
Now, I can't use it anymore, cause calendars are not listed, events are grey (or blank...).
It's really a shame.
Thunderbird 68.5.0 64 bits, on Ubuntu and Windows

This review is for a previous version of the add-on (68.5.0). 

Rated 4 out of 5 stars

I was having the issue with calendar not showing up properly (items and sync greyed out, no calendars listed).

I could get the calendar to work correctly by killing TB (pkill thunderbird) and starting it back up, but a normal shutdown would cause the calendar to be messed up again.

What finally fixed it for me was starting TB in safe mode and resetting toolbars and controls:
https://support.mozilla.org/en-US/kb/safe-mode-thunderbird

This review is for a previous version of the add-on (68.5.0). 

Rated 4 out of 5 stars

Wenn ich Thunderbird in Windows starte über
"thunderbird.exe -purgecaches" dann funktioniert es jedes Mal.

Wenn der Cache aber nicht gelöscht wird, dann habe ich einen leeren Kalender. Die Einträge vom "provider for google calendar" werden zwar angezeigt, jedoch sind diese alle "weiß" und nicht editierbar.

This review is for a previous version of the add-on (68.5.0).  This user has 2 previous reviews of this add-on.

Rated 1 out of 5 stars

version 68.5.0
1st restart after upgrade -works well
2nd restart - no data in widgets

error console after clicking calendar icon:
viewNode is undefined calendar-views-utils.js:524
getLastCalendarView chrome://calendar/content/calendar-views-utils.js:524
openTab chrome://lightning/content/messenger-overlay-sidebar.js:64
openTab chrome://messenger/content/tabmail.xml:624
oncommand chrome://messenger/content/messenger.xul:1

EDIT: Fix from : https://addons.thunderbird.net/cs/thunderbird/addon/lightning/reviews/1161410/
does not fix unresponsive calendar UI, for example it is not possible to create new event:

An error occurred executing the calendar_new_event_context_command command: [Exception... "[JavaScript Error: "currentView(...) is undefined" {file: "chrome://calendar/content/calendar-common-sets.js" line: 293}]'[JavaScript Error: "currentView(...) is undefined" {file: "chrome://calendar/content/calendar-common-sets.js" line: 293}]' when calling method: [nsIController::doCommand]" nsresult: "0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS)" location: "JS frame :: chrome://global/content/globalOverlay.js :: goDoCommand :: line 101" data: yes] globalOverlay.js:104
goDoCommand chrome://global/content/globalOverlay.js:104
oncommand chrome://messenger/content/messenger.xul:1

This review is for a previous version of the add-on (68.5.0). 

Rated 5 out of 5 stars

Muy buena

This review is for a previous version of the add-on (68.5.0).