I do a lot of testing on websites and fill out lots of web forms. I often want to have unique email address so searching for an exact record and verifying metadata is easier. This is great until I found I have way to many email addresses that are 1@whatever, 2@…, 3@… and so on. My normal junk email I use is 2014@… that I’ll change to 2015 so I can get rid of all the junk and bots.
Recently I tripped over a really cool feature in Gmail. Gmail will allow you to add (+somedata) to your email address that tags it according to your (+somedata) but it is still delivered to your inbox. If you want to filter on a certain subject just give the emailer the filter. I have been using firstname.lastname@example.org for a while to see which newsletters are delivered via my web submission.
This works really well when testing out your own website and submission forms.
Here is the gmail support post https://support.google.com/mail/answer/12096?hl=en