We use email-to-SMS services to send reminders.
O2 in the UK will require you to activate the email-to-SMS service with them before this will work. Remember The Milk users have reported that they were able to enable this service by texting ON to 212. Please check with O2 for full details and any charges for this service.
If you need to whitelist our reminder email address with your provider, it's email@example.com for SMS reminders.
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