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Calndr.link Is Now AddCal: What Changed, What Still Works

Calndr.link became AddCal in 2025. Every old link and API integration still works. Here is where Calndr.link came from, what changed in the rebuild, and what to do about events you created on the old system.

August 8, 2026

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How to Accept a Google Calendar Invite

Every way to RSVP to a Google Calendar invite, from Gmail, the web and mobile, plus adding a note, proposing a new time, changing your answer, and finding invites that never arrived.

July 22, 2026

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How to Send a Calendar Invite in Outlook

The real click paths for new Outlook, classic desktop Outlook and Outlook on the web, plus Meeting versus Appointment, Scheduling Assistant, response options, and what breaks when you invite external addresses.

July 22, 2026

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How to Send a Calendar Invite on iPhone

How to add invitees to an event in Apple Calendar on iOS, which accounts actually support invitations, why the Invitees row goes missing, and how to share an event when invites are not an option.

July 22, 2026

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How to Send a Calendar Invite (Any Calendar App)

What a calendar invite actually is under the hood, how to send one properly in Google Calendar, Outlook, Apple Calendar and Gmail, the etiquette that gets people to accept, and why cross-organisation invites so often fail.

July 22, 2026

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How to Send a Calendar Invite in Gmail

Three ways to send a calendar invite from Gmail, what guest permissions really do, what recipients see on Gmail versus Outlook, and how to fix invites that land in spam or never reach the calendar.

July 22, 2026

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What Is webcal? Subscription Calendar URLs Explained

The webcal scheme tells a device to subscribe to a calendar rather than download it. It is not a protocol and it was never standardised, but it is universally supported. How it works, refresh intervals per client, how to build a feed, and why the URL is the credential.

July 22, 2026

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ICS vs iCal vs webcal: What's the Difference?

One is a file format, one is a defunct Apple app name that stuck, and one is a URL scheme. They get used interchangeably and they are not the same thing. Here is what each term actually means and which to use when.

July 22, 2026

outlookmicrosoft 365 +3

How to Add an ICS File to Outlook

Outlook is four different products, and each handles ICS files differently. Classic Outlook alone offers three import options with three different outcomes. Here is what each one does and how to fix the usual timezone and recurrence problems.

July 22, 2026