Should auto tags work on the subscribe box on the event page? Instructions point to the opt in when they interact via the "send future updates" box, though emails added via the subscription list are added to the contacts without knowing which event they're coming from (I tagged an event and then did a request of that tag on my contacts list --- it did not return any responses.)
Is there a number where people can send an SMS to subscribe?
I thought I remembered seeing something along the lines of they send an SMS that says "<username> subscribe" to a number and that would add them to your sms blast list...</username>