send 1sat or as much as you like to that contact and attach a message. Optional you can attach your Blixt "alias" (see in Settings - name) or your Blixt LN address. It can be different.
the peer will see your message and also the sender "name/alias".
Keep in mind that both Blixt users must have activated "persistent mode" in order to be able to use LN address communication.
Blixt (as SN) is fully supporting LUD-18 (nameDesscription). Is a very nice feature that can be useful in specific cases.
Another tip of the day :)
2 Blixt users can have a private communication over their Blixt LN address, attaching a message.
How?
Keep in mind that both Blixt users must have activated "persistent mode" in order to be able to use LN address communication.
Blixt (as SN) is fully supporting LUD-18 (nameDesscription). Is a very nice feature that can be useful in specific cases.