Lightning is a calendar extension for Mozilla Thunderbird email client and Mozilla SeaMonkey AIO Suite. It is based on Mozilla's Sunbird calendar and works for Windows, Mac and Linux86.

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1answer
5k views

Thunderbird Lightning Calendar sync or import from MS Outlook

I have recently started using Thunderbird as my mail client and I like it (much better than what they want me to use - Outlook). Although I am well settled with email and contacts, I still want to ...
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1answer
530 views

How can I link my Lightning (Thunderbird) and my Office365 calendars?

My organization has recently started using Office365. I hooked up to it for email, using IMAP and SMTP, no problem (except that it's slow). Now I want to have my Lightning calendar linked to it as ...
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1answer
350 views

Thunderbird+Lightning returns “tentative” automatically on invitations

Whenever I receive an invitation (through an Exchange server) TB+Lightning returns a "tentative" status automatically. Before I even open the invitation. I have TB 31.5.0 and Lightning 3.3.3 (with ...
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1answer
57 views

Where can I get mozilla lightning v.0.9 release for mac?

I have tried to search for an older version of lightning for mac but couldn't find any. Anybody have an ideas?
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0answers
219 views

Modfying meeting invitations in Thunderbird Lightning?

Is there a way of modifying a meeting request in Thunderbird Lightning? Similar to how Outlook offers the ability to suggest a new time for a meeting etc.
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131 views

Other reminder actions for events in Mozilla Lightning / Android Calendars (e-mail reminders)

I'd like to get email reminders for some of my events. Apparently, that's not currently supported in Thunderbird/Lightning (or Android). I have a server that can access my calendar, if I can add ...
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0answers
218 views

Cannot accept meeting invite in Thunderbird Lightning when email address is not in attendance fields (sent to mailing list)

When sending a meeting invite to co-workers, we generally send them to an email list we are all subscribed to. Because of this, when an invite comes in, I sometimes cannot accept/deny the request due ...
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0answers
40 views

How do I export ALL calendars in Mozilla lightning

I have seen singular versions of this but I was wondering if I could easily export ALL calendars into one file. I have about 20-30 calendars... Thunderbird 17.0.2 Ligntning 1.9 Mac OS X SL
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53 views

Get link to an IMAP mail from within Thunderbird?

When dragging&dropping a mail from Thunderbird to e.g. Firefox, a link for the mail (in the address bar of firefox) is displayed. Any way to get this link from within Thunderbird? (One can use ...
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0answers
336 views

How do I make Thunderbird add events from Exchange invites to my Google Calender

I've set-up Thunderbird, Lightning and the Google Bi-directional Calender provider and it's all working fine. I can manually add events to either calender and also access the Google calender via the ...
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0answers
94 views

Make an event recur based on “the last full weekend”

I'd like to set up a recurring event so that I don't have to re-create one every year. However, the recurrence of the event is not something that can easily be handled by the calendar's built-in ...
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0answers
509 views

How do I get Outlook (via Exchange) to accept Thunderbird/Lightning meeting requests?

Lightning/1.0b1 addon to Thunderbird/3.0.4 has no problem accepting Meeting Requests sent from my network Outlook session. However, Meeting Requests sent to an email address hosted on a POP server ...
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0answers
20 views

Can I hide the default “mail” tab in Thunderbird?

I'm only using Thunderbird for its calendar (Lightning). However, it still insists on showing the default mail Inbox tab, despite me having no use for it. Is it possible to close this tab, or at ...
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0answers
14 views

Calendar event disappeared then reappeared after reboot

I am using Thunderbird with Davmail to connect to corporate Office 365 Outlook. I accepted an event invitation, but after the event started, I noticed that I had not received a reminder, and ...
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0answers
54 views

How can you change the style or background color of past days in Mozilla Lightning Calendar?

I am looking to change the styling of Mozilla Lightning Calendar for monthly view. I want to make it so that there is a clear distinction between the coloring for past days (before current day) and ...
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39 views

How do I migrate tasks from KOrganizer to Lightning (Thunderbird calendar addon)?

I tried both export/import of the whole calendar (including tasks) as ICS and just the TODO (via the hack of marking all TODO items complete then using "Archive Old Entries"). However, neither work. ...
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2k views

How Should I Share Thunderbird-Lightning-Tasks Between Workstations?

I originally submitted this here, but I don't expect a reply. After migrating a company from MS Exchange server to Google Apps, I had a hard time finding a comparable replacement for Outlook's "Tasks"...