Have you ever wanted to send confidential information within your work environment, to family or friends, but were afraid to do so over the internet, because some malicious hacker could be spying on you?

Privnote is a free web based service that allows you to send top secret notes over the internet. It's fast, easy, and requires no password or user registration at all.

Just write your note, and you'll get a link. Then you copy and paste that link into an email (or instant message) that you send to the person who you want to read the note. When that person clicks the link for the first time, they will see the note in their browser and the note will automatically self-destruct; which means no one (even that very same person) can read the note again. The link won't work anymore.

You can optionally choose to be notified when your note is read by leaving your email and a reference for the note.

https://privnote.com/

With Gmail, you can add a +word to the end of your email address. So, if your email is johnjones@gmail.com, you can use johnjones+xyz@gmail.com and that will also be delivered to the same email address. 

You can then also set up a filter based on the +xyz keyword to direct the incoming email wherever you want and bypass the inbox.

The +word feature is also useful for tracking emails and seeing who is selling your email address.

If you need an email address to register on a website, but don't want them to bombard you will possible spam, a disposable email address is the answer.

The following services create an alias address.  Each have varying life-spans and some allow you to decide that time.

10 Minutes Mail
As the name suggests, your email address lasts for just 10 minutes.

My Trash Mail
Use any of the sites domains for as long as they stay active.

MailExpire
Your email address can last from anywhere between 12 hours to 3 months.

Need to send a once-only fully encrypted message that will self-destruct after it has been read - and also has a password option?

Type you message, set a password if desired, and the site will generate a one-time URL link.  Once that URL is accessed and the reader moves from that page, the message is fully deleted.

https://www.thismessagewillselfdestruct.com/