​Temporary Password is a good way to send passwords securely, as it is a one time only use link, that way when you send over the link to someone in an email, once you confirm they have the password it's not going to be stored in your emails.

First step is to go to https://temporary.pw

Type the password you want to send into the box.
Once the password is in there click Share.
You’ll then get a One Time only use link, then you can send that link in an email, Facebook messenger, WhatsApp etc

When the recipient clicks on the link they will then see the password and can then securely store password wherever needed.