My company sends out the phishing tests, but never provides any user feedback about them, so they're worse than useless. If you click the links then oh well. If you report them then oh well. They're pointless.
I choose not to learn how our voicemail system works, so I can always claim I haven't gotten around to setting it up.
I don't want to encourage colleagues to leave rambling voice messages when they could easily send me an email, which will both reach me sooner, and more clearly communicate their point.
If it's something that must be a phonecall, then the fact that I missed a call from them does the trick of getting me to call back, without anyone needing to interact with a talking computer.
Edit: people I like working with (mainly people whose work betters the world, or results in my earning more money) get a call back without needing to leave a message. Everyone else can send an email.
At my last job they never even told me that I had a phone line or a voicemail. I found out about it after being there for 2 or 3 years. I had over 500 voicemails. It's weird that I had either of those things, and that other people were using them, since we primarily communicated through slack.
I did something similar at my last gig. I was issued a work cellphone, as was everyone else. Desk phones were a thing, but so was liberal work-from-home. So hardly anyone used the desk phones, and I never requisitioned one.
I'm so ashamed. They sent out a phishing test the other day and I was extremely tired because it was like seven a.m. and I opened it and I immediately realized what I had done.
Settle an argument for me: Is there anything wrong with just opening a phishing email? No replying, downloading attachments or clicking links. Just opening it.
Generally no-- the payload typically comes from some sort of interaction (click a link, open an attachment, reply to the message). There have been some zero interaction attacks with emails before. Like for example, when the email is previewed in the reading pane in Outlook. These are exceptionally rare and not what we're training against when we do phishing training.
That said, if you know an email is phishing it's always best to not interact with it at all, but you really can't always tell by the sender and subject line alone.
It also depends if your client downloads embedded content (images) by default.
(For example, a publicly hosted email signature image, rather than an image attached to the email).
In the case of using the preview pane, there's a subtle case of displaying external images (img src in HTML) where an attacker can get an idea of what content is getting past email filters. The client will just download the image automatically, and the attacker's webserver logs the activity. I think that can be turned off in various email clients, but folks have to be savvy enough to know to do it.
There may not be enough info in the subject line to tell if it is phishing so I think the point is moot. I guess the threat vector could be a zero day exploit for your email client in the body of the message but I don't see how you'll be able to detect a problem from just the headers unless it's really obvious.