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Extract email from Thunderbird email

I want to extract all the email addresses found in the Thunderbird email file. Sometimes letters are sent out in spaces, sometimes in <> and, possibly, in other ways. I can find where @ occurs on each line, but how can I capture the characters before and after it that form the letter?

Thank.

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2 answers

Regex was born for this kind of work. Here's a minimal console application that shows how you can use RegEx to extract all email addresses from one long block of text:

program Project25;

{$APPTYPE CONSOLE}

uses
  SysUtils, PerlRegex;

var PR: TPerlRegEx;
    TestString: string;

begin

  // Initialize a test string to include some email addresses. This would normally
  // be your eMail text.
  TestString := '<one@server.domain.xy>, another@otherserver.xyz';

  PR := TPerlRegEx.Create;
  try
    PR.RegEx := '\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b'; // <-- this is the actual regex used.
    PR.Options := PR.Options + [preCaseLess];
    PR.Compile;
    PR.Subject := TestString; // <-- tell the TPerlRegEx where to look for matches
    if PR.Match then
    begin
      // At this point the first matched eMail address is already in MatchedText, we should grab it
      WriteLn(PR.MatchedText); // Extract first address (one@server.domain.xy)
      // Let the regex engine look for more matches in a loop:
      while PR.MatchAgain do
        WriteLn(PR.MatchedText); // Extract subsequent addresses (another@otherserver.xyz)
    end;
  finally PR.Free;
  end;

  Readln;
end.

. , XE Delphi: http://www.regular-expressions.info/delphi.html

+5

, "Power Email Address Extractor and Validator".

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