To implement a solution for https://github.com/Piwigo/ContactForm/issues/3 we need Piwigo core to be able to differentiate `From` and `Reply-to` in function `pwg_mail`
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To implement a solution for https://github.com/Piwigo/ContactForm/issues/3 we need Piwigo core to be able to differentiate
FromandReply-toin functionpwg_mail