Notifcation send the same email twice

Question

I got an email saying "congrats your answer...." And i received it twice for the same answer, is this normal?

Comments

Maybe somebody double clicked and it selected and unselected, so he had to select it again

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Yeah this happens to me too, not just for that but also for comments and answers.

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Yah its not that septile, it has happen to me more then once

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happens to me a lot

Answer 1

This is probably caused by subscribing to the article more than once. For example you comment on a question and subscribe. Then you answer the question and subscribe again. This will result in two subscriptions that each send you a notice when your answer is selected.

The ideal solution would be a deduplication algorithm that detects if the user is about to receive two e-mails of the same type. or just prevent hte user from subscribing multiple times.

That said this can be a very difficult problem to solve from a coding standpoint. I've spent days writing similar algorithms and days of work just to stop a few duplicate e-mails probably isn't worth it.