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Dramatically reduce no-shows with Global SMS reminders. ClickSend is a world-leading SMS gateway that powers billions of messages globally using direct routes, so your messages get delivered fast.
Listing updated:November 29, 2021
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ClickSend’s rapid, reliable text messaging can now be easily incorporated into your Google Calendar with the ClickSend SMS add-on.

There’s free credit to get you going (no credit card required) and then pay-as-you-use with very competitive rates. View pricing at

ClickSend SMS is a Google Calendar add-on that enables you to easily schedule text message reminders for any appointments made within Google Calendar. They could be for customers or staff for any type of appointment, meeting or reservation and you can schedule in any amount of reminders on any event. You can also receive replies and have two-way conversations. No more manual reminding and with the 98% open rate of SMS you WILL dramatically reduce no-shows.

Automatically fetches phone numbers in the title and description of the event.
You can set default values to use for every reminder, which are editable too.
Can send from shared, dedicated, own phone number and business name.
Can use 2 placeholders: %date% and %time%.
There's a check icon - a confirmation and SMS reminder has been set for the event. Then an SMS will be sent when the trigger time takes place.

ClickSend is a GDPR compliant, global SMS gateway that uses Tier 1 direct routes with a 100% Uptime SLA guarantee. ClickSend takes message delivery very, very seriously.
Additional information
PricingPaid with a free trial
Trader status unspecified
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ClickSend SMS will ask for the permissions shown below. Learn more
ClickSend SMS will need access to your Google account
This will allow ClickSend SMS to :
See, edit, share, and permanently delete all the calendars you can access using Google Calendar
Run as a Calendar add-on
Connect to an external service
Allow this application to run when you are not present
View your country, language, and timezone
See your primary Google Account email address
See your personal info, including any personal info you've made publicly available
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