Email: arh [at] gnu [period] org (PGP)

I personally prefer email over other messaging systems. Whenever my computer is on, my email client is open. I usually respond within 24 hours but sometimes it may take a day or two.

Please send your email in plain text. Don’t send HTML email messages. I prefer text over other things. If you send me a link to your message, I won’t open it.

Please don’t send files I haven’t asked for. I won’t open any file unless I’ve asked for it.

Also, you don’t need to be so polite. A simple ‘hello’ is good enough but even that is not necessary.

It’s best to encrypt your message even if your message is not important. Use my PGP key to do so. Also, you should send me your public key so I can encrypt my messages to you too.


Matrix is another decentralized messenger. With Matrix you can send photos and files as well as text messages. It’s a great messaging system that is decentralized and privacy focused as it provides encryption for messages.

Don’t forget to check my keys and verify that our connection is securely encrypted.

IRC: arh on Freenode

I really don’t know why would you message me on IRC. I don’t even know why I’m on IRC. What I do know is that IRC is great for texting people and participating in group chats.


If you want to follow me or have interactions with me on a social network, my Mastodon account is almost the best option. I’m not a very active person on social networks though.


If you want to take a look at photos I share, follow my Pixelfed account. It’s a decentralized photo-sharing site which part of fediverse. It federates with Mastodon so you can follow my Pixelfed page using your Mastodon account.

Other profiles

I also share computer-related links (or sometimes stories/notes) on My page locates on

For more community/activism stuff, I use Crabgrass. You can find me on