Is today got the legend has 1G big Gmai, really very easy to use very fast, without the traditional collection folder, take the generation of the labels, the user set up their own labels after the addition of mail filtering settings, became the automatic Mail division training function, logically, User name +labels@gmail.com, "labels" can name themselves, can reach countless e-mail address, these addresses also point to the user name @gmail.com
I was outside testing: can over 163 mailboxes to the user name +labels@gmail.com, mail normal arrival, and in accordance with the prior to the worry-setting is automatically categorized into the labels folder (in fact, not a folder). In other words, the traditional e-mail address does not allow the "+" rule has been broken, so many delete the process of e-mail verification also need to update.
These days I have read. NET, the following is a modified email verification of the regular expression:
Legal e-mail address:
1. Must contain one and only one symbol "@"
2. The first character must not be "@" or "."
3. "@." is not allowed to appear. Or. @
4. The end must not be the character "@" or "."
5. Allow "+" to appear in the characters before "@"
6. Do not allow "+" at the front, or "+@"
The regular expression is as follows:
-----------------------------------------------------------------------
^ (\w+ (-\w+) | ( \.\w+)) \+\w+ (-\w+) | ( \.\w+)) *\@[a-za-z0-9]+ (\.| -) [a-za-z0-9]+) *\. [a-za-z0-9]+$
-----------------------------------------------------------------------
Character Description:
^: matches the start position of the input.
\: Marks the next character as a special character or literal.
*: Matches the previous character 0 times or several times.
+: Matches the previous character one or more times.
(pattern) matches patterns and remembers matches.
X|y: Matches x or Y.
[A-Z]: represents a range of characters. Matches any character within the specified interval.
\w: Matches any word characters, including underscores.
$: Matches the end of the input.
