3 EN. IRC Bouncer
From now on I'm using a bouncer for IRC.
I'm using the program called "znc".
I've configured znc to sit in the channels that I join often.
Now when I rejoin IRC with a regular client after being offline, the bouncer replays the messages that were written while I was offline.
And you, do you use a bouncer?
P.S.: I had to use znc's web configuration interface to upload the TLS client certificate I want to use to authenticate with the networks I connect to.