I have a new(-ish) pet peeve: receiving a text message when an e-mail (or a Facebook message or whatever) would suffice. As a rule of thumb, if a message does not require my attention within 24 hours, don’t text me. E-mail me.
E-mail’s pretty awesome. I can flag messages I think are important (or star them in Gmail). I can use tools like Boomerang to postpone responding to messages until later. I can search for old e-mails when I need to recall something that someone said. I can set up filters to sort my e-mails based on context. I can forward funny pictures to my friends. I can attach things (like calendar invites!). I can read and write them on my phone or my laptop. I can have more than one e-mail address and separate work e-mails from not-work e-mails. I can CC and BCC and do all the wonderful things that have been part of e-mail since time immemorial (1978-ish?).