CSDN Email Format

CSDN Email Format:

CSDN also uses (ex. JSmith@csdn.net ) and {f}{last} (ex. John@csdn.net ) and {first} (ex. SmithJohn@csdn.net ) and {last}{first} (ex. JohnS@csdn.net ) and {first}{l} (ex. John_Smith@csdn.net ) and {first}_{last} (ex. Smith@csdn.net ) and {last} as email structures. CSDN's uses up to 9 different email patterns.

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