If you send me documents or tips, and prefer to do so anonymously, you can suggest the names of the people I can contact to verify the information.
Don't use your work phone, your work computer, or the internet connection in the office to contact me if you're worried about your employer knowing that we've spoken, unless you're using methods that support end-to-end encryption, like ProtonMail or the apps below.
It may still be possible to see who you've contacted and when. That's less the case for apps and contact methods that use random usernames, like Threema. Avoid using WhatsApp or Telegram for sensitive conversations. Use your best judgment.
If you only have a work computer, use tor browser on public wi-fi in places you don't normally go to. Be mindful of security cameras and prying eyes. Sometimes even the presence of tor can elicit suspicion, so be sure to delete the app and the download file after you've done what you had to do. You should avoid using phones or computers your employer has provided you with to get in touch with me. Use your personal device.
Safest and easiest option. You don't need to use your email address or phone number to message me.
You don't need to use your email or phone number to contact me. Note my username is donatopmancini.
If you'd like to send me physical documents, use the following address:
Donato Mancini c/o Lex, Financial Times
1 Friday Street
Don't write your name or address on the outside of the envelope, and don't use mail boxes near your office, home, or places you usually go to. It's a good idea to give me a heads-up through one of the contact methods listed here. FT journalists are largely working from home during the pandemic, so get in touch before sending any documents.
Other ways to contact me or other Financial Times journalists securely can be found here.