# Just how does Gmail determine to string e-mail messages?

Occasionally I'll see incorrect positives (consists of an e-mail that isn't component of the string) and also incorrect downsides (misses out on an e-mail that needs to have become part of the string). Just how does Gmail determine which messages should and also should not become part of a string?

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2019-05-04 09:30:05
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The list below problems have to be fulfilled:

1. The subject have to be comparable (as an example test and also re: test will certainly function ; yet test and also test 123 will not).
2. The sender has to belong of the string OR the in - reply - to header have to be made use of.

The in - reply - to header can be made use of using Gmail is user interface by merely responding to the string. This is what makes it possible for sent messages to be a component of the very same string despite the fact that the sender is various

If you desire even more details, you can look into my blog post where I uploaded extra thorough details concerning my searchings for.

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2019-05-17 13:07:55
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The brief solution : the subject line .