|If a contact changes their details before an Autoresponder or Email Campaign gets sent will they still receive it?|
When sending the application will look to see what contacts are due to be sent the autoresponder or email campaign, then it will check to
see which of those contacts meet your filtering requirements.
So in short, yes, if you change details after sign up and they then qualify for the autoresponder when it is due to be sent then they will receive it.
If however if they did already qualify for the autoresponder or email campaign and they change their details and then become invalid at the time of the send they will not be sent it.