Hello,
AcyMailing and AcySMS are separated so you won't be able to send them at the exact same moment.
For AcyMailing 5, create a smart-newsletter with a frequency set on "As soon as possible". Once done, insert a K2 tag from category and set the "Filter" option to "Only newly created", and the "Min. number of items" option to "1".
AcyMailing will send this email each time a new k2 item is created if you have a running cron task on your site (in the Acy configuration page, tab "Queue process").
For AcySMS I'm not really sure as I never worked on this extension, but if it offers the possibility to send text messages once a K2 item is created, it would be the same logic as with AcyMailing, I let you take a look at it 😉
