Simple e-mail service with Rails - Part 3: Adding attachments

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In the last part, we’ve learned how to send an e-mail. Even if with formatted text, we’re still missing attachments. Rails ActionText editor can handle attachments, but it’s a bit tricky. We would need to manually attach each file to the e-mail, so receiver can actually see the file. For now, let’s use this restriction as an opportunity to learn how to upload files using Rails. And of course send them as e-mail attachments.