New and updated appointments are not sent via e-mail

[stoneubi]

Steps to reproduce

1. Update NC to version 28.0.1
2. Update Calendar to Version 4.6.4
3. Login to NC and create a new calendar entry / appointment and invite some user or external attendee via e-mail

Expected behavior

The newly created calendar entry should be sent via e-mail to the invited attendee.

Actual behaviour

No e-mail is sent. Also no e-mails are sent for changed calendar entries.

Only if a newly created entry will be cancelled an e-mail with the cancellation is sent.

Regardless if you create the calendar item directly in nextcloud calendar app or via DAVx5 or Thunderbird calendar, the result is the same. No e-mail with the invitation are sent any more. This worked create before the last update to calendar version 4.6.4.

Calendar app version

4.6.4

CalDAV-clients used

No response

Browser

No response

Client operating system

No response

Server operating system

No response

Web server

None

Database engine version

None

PHP engine version

None

Nextcloud version

No response

Updated from an older installed version or fresh install

None

List of activated apps

No response

Nextcloud configuration

No response

Web server error log

No response

Log file

No response

Browser log

No response

Additional info

No response

[Markoise]

I can understand the problem very well.
Especially if invited people have a GMail address.
Likewise, no emails will be sent if the appointment is created with an Android calendar app.
At least it works in the Nextcloud Calendar WebGUI as long as no GMail address is invited.

[stoneubi]

Any update on this issue!

[Alex13280815]

Same here, fresh install on Debian12, PHP 8.2, MariaDB, Apache, NC 28.0.2.

[grosjo]

Further to that, creating an event via CalDav (Davx here), does not trigger sending an email to the invited

[miaulalala]

Can you check your logs for any errors?
Can you also check your Mailer settings for your instance?

[Alex13280815]

nextcloud.log
Email Test is OK.

[miaulalala]

Nothing in the logs. Can you enable debug mode and try again?

[stoneubi]

Today I downloaded Google Calendar on my Android device and I created a new appointment with invited attendees and nextcloud calendar sent the expected invitations through email. If I do the same things in my Android calendar app called fossify calendar 1.0.2 (new version of simple calendar app) and start Davx5 to synchronize with my nextcloud, no invitations will be sent. Very strange.

[stoneubi]

As I can see, a new version of Davx5 will be released with the next hours. Version davx5-ose-4.3.13-ose-release.apk.

As Google calendar works maybe this bug is linked to Davx5?

On the other hand the invitations are also not sent if the calendar entry has been created directly in nextcloud itself.

[Alex13280815]

Nothing in the logs. Can you enable debug mode and try again?

nextcloud (2).log
I give my best. :-)

[grosjo]

This is really a critical bug for a calendar not to sent invites.

How can I help ?

[miaulalala]

I can't reproduce - invitations get sent. Is there anything special about the attendee email addresses? I've tried with both other users and external attendees and the emails get sent.

Are the calendar you're trying to invite someone to special? Calendars that have been shared / are shared with you?