How to Send Laravel Mail Through OwnMailServer via SMTP

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The guide explains how to route Laravel email through OwnMailServer by setting the SMTP mailer, host smtp.ownmailserver.com, and port 587 in the .env file. The API key serves as the SMTP password, and the from address must belong to a verified sending domain, otherwise the message is rejected with a 550 error. Because port 587 uses STARTTLS, the MAIL_SCHEME setting should be left empty, and the guide notes that MAIL_ENCRYPTION is obsolete in Laravel 11 and later. Developers are advised to clear the config cache and restart queue workers after changes, and to verify the setup with a tinker test email. The article also covers queued mailables, which keep slow SMTP connections from delaying web requests, and retry settings for temporary refusals.

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