marked as read

I mark the notice as read.

私はお知らせを既読に変えます

I mark the notice as read straight away.

私はお知らせをすぐ既読に変えます

I mark the notice I have checked as read straight away.

私は確認したお知らせをすぐ既読に変えます

I mark the notice I have checked as read straight away in the company messenger.

私は会社のメッセンジャーで確認したお知らせをすぐ既読に変えます

I mark the notice I have checked as read straight away in the company messenger during the lunch break.

私は昼休みに会社のメッセンジャーで確認したお知らせをすぐ既読に変えます