Google Calendar is not getting invites

Google is silently dropping invites sent from Runbox accounts. I tried from Apple Calendar and Thunderbird. Outlook receives invites just fine. Email works to gmail just fine. Spam folder is empty.

  • Regular email via Runbox → Gmail :white_check_mark:
  • Invite email via Runbox → Outlook :white_check_mark:
  • Invite email via Runbox → Gmail :x:
  • Invite email via iCloud → Gmail :white_check_mark:

@tamas It might be worth you contacting us at support@runbox.com so we can discuss this in more depth on a per account basis and try a few things out.