Add-to-calendar guide

Make it easy for subscribers to show up for your brand’s most momentous events with the Add-to-calendar capability in Litmus Personalize. With just a few clicks, you can create custom add-to-calendar links that let subscribers take action directly from your email.

Add-to-calendar supports Apple, Outlook, Google, and Yahoo calendars, as well as any calendar that accepts .ics files.

Create the Add-to-calendar button

Start in your Personalized content tab and select Add-to-calendar from the left menu options or the Add-to-calendar image option button.

Your Add-to-calendar widget's default name is the template name but you can edit it to whatever you prefer by selecting the name on the top left.

Configure options

Set up your button with details about your event. Required items are:

• Event title
• Start date and time
• End date and time (unless All-day event selected)

Optional items include:

• Event description
• Location

Button styling

Adjust the width, height, background color, font face, text color, and button border color. You can include calendar links for all the major providers or toggle off that option.

Add a custom TTF font

If you would like to use a custom font, you can upload a font file (TTF font files are supported). In the Button styling section, select the Upload font link above the font selection dropdown.

Once your font has been uploaded, you can select it from the Font dropdown. Your uploaded font will be available in the Custom fonts section of the list and will be available to use in any other widget that has custom font capability.

Preview and finish

Once your button is set up, select the Copy HTML button to use the code right away in your email or Done to finish. The button code will be available in your Add-to-calendar library where you can copy the HTML or edit your add-to-calendar title.

Append customization parameters

Add-to-calendar widgets can be appended with code formats to customize the information they display. Use any of the following options with your finished add-to-calendar widget. You can combine the options for the perfect calendar event!

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/ics?tl=New Event Title

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/ics?st=2025-07-01T08%3A00-05%3A00

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/ics?et=2025-08-01

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/ics?des=Different description of the event

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/ics?loc=Updated%20address

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/ics?ad=true|false

Combine multiple parameters

Multiple parameters can be combined to update multiple event details, e.g. setting both the title tl and the all-day ad parameters. Add an ampersand & between parameters.

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj28ip3/ics?tl=All-day%20Event&ad=true

All event details can be recreated by including a value for each of the available parameters.

Custom date format

You can append your completed calendar button code to different date formats. This requires manually editing the code to include a date/time parameter. Delete code after your designated times and append with a formatted time parameter.

https://image.ltms.app/ce/uy8898e3dz5m86jr8zpouzzx6.png?tl=Bring%20your%20pet%20to%20work%20day&st=2024-06-14T10%3A00%3A00.0000000-02%3A30&et=2024-06-15T18%3A00%3A00.0000000-02%3A30&ad=False&loc=http%3A%2F%2Flitmus.com

Calendar option examples

Event details are supported for the following calendar types.

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/ics?tl=New Event Title

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/google?tl=New Event Title

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/outlook?tl=New Event Title

http://click.ltms.app/ce/3wnde97y22fd0y5ubfzj
28ip3/yahoo?tl=New Event Title

Impression usage

Add-to-calendar is a single image so any time one is loaded, it will count as one impression.