non-real-time communication
nounUK /ˌnɒn rɪəl taɪm kəˌmjuːnɪˈkeɪʃən/
US /ˌnɑːn riːəl taɪm kəˌmjuːnɪˈkeɪʃən/
This means sending messages that the other person reads or answers later, not right away.
Sending an email is a kind of non-real-time communication because your friend might read it hours later.
RELATED WORDS
OTHER MEANINGS
2. A way of talking where people do not need to be present at the same moment.
Posting a comment on a class website is non-real-time communication.
3. Communication that is saved and delivered later instead of instantly.
A letter sent by mail is an old form of non-real-time communication.
4. Messages that wait in a mailbox or inbox until someone checks them.
Leaving a voicemail is non-real-time communication because the person listens later.