No system is completely secure. Please exercise caution before using the services listed below.
I prefer Signal for encrypted communications. I also have accounts with WhatsApp and Wickr as below.
Signal: +61 417 921 300
Whatsapp: +61 417 921 300
The simplest way to send me an encrypted email is to set up a free Proton Mail account and then email me at firstname.lastname@example.org. This email address is hosted at Proton Mail. If you use Proton Mail to email me at that address, encryption will be automatic. Alternatively, if you already have PGP email you can download my public key here. Please note only inline OpenPGP format is supported. Subject lines are not encrypted.
Email from a regular email provider to Proton Mail is not encrypted.