I recently became acquainted with SimpleJavaMail. I've been testing it for a few days, and so far, I like it very much. Thank you very much for making it, and sharing it with us!
On your website, you asked for suggestions for how it could be improved. I have a few "wishlist" items for it. I'll put them in separate tickets so you can evaluate and track them individually.
You currently have the ability to add multiple recipients with:
email.addRecipients("[email protected], [email protected]", RecipientType.TO);
It'd be very much appreciated if you would extend its capabilities to accept entries such as:
email.addRecipients("\"John Smith\" <[email protected]>, \"Jane Doe\" <[email protected]>", RecipientType.TO);