Tuta Calendar

Let's Calendar is the worlds first and most advanced bulk calendar invite tool designed to help event managers, conference organizers, webinar admins, or simply any type of event and meeting organizers to send mass calendar invites to thousands of participants at once, and block their contacts date/time with details about their event and ensure a healthy turnout! Let's Calendar is hosted on Amazon Cloud and ensure great privacy tools that help protect your content and your contacts while allowing you to safely and securely upload your event contacts and send bulk calendar invites instantly in 1-click. Simply create your campaign, upload your contacts and hit "send" and let Let's Calendar handle all the magic in the backend. Let's Calendar will discreetly send the invites using your email id and your sender name to all the recipients in a way that they do not see each others details and the calendar invite is compatible with all browsers, devices and time zone.

Your calendar is a record of your life. Proton Calendar helps keep it private. Proton Calendar automatically secures all your events with end-to-end encryption. Events received from people who use other calendars are secured with zero-knowledge encryption. In both cases, event details, including the title, description, location, and people invited, are encrypted so not even we can see them. Proton Calendar makes staying on top of your schedule simple while keeping your information secure. Proton Calendar was built by the team behind Proton Mail, the world’s largest encrypted email service. Over 50 million people and some of the world’s largest organizations have signed up with Proton. Proton Calendar comes with a Proton Mail email address that you can use to securely send event invites. You can also add events to Proton Calendar directly from your Proton Mail inbox.