Do you know that if your gmail account is "firstname.lastname@example.org" then "email@example.com" is same and "HuDi.BaBa@gmail.com" is same as "firstname.lastname@example.org".
Actually the fact is that Gmail server doesn't recognise DOT(.) character.
Another tip is that, you can categorize or mark your email address using a "+" in your email address.
for eg. email@example.com is same as firstname.lastname@example.org
However if there is a space after the + sign then this won't work.
Say "hudibaba+how r email@example.com" would not work; instead you can use "firstname.lastname@example.org".
And as you all might be knowing another domain name for your Gmail account is "yourAccount.Name@googlemail.com".
Note the above tips work only for GMAIL email ID.
So how did you find the above tips ? Do leave a comment.