"mailer" and its derivatives are deprecated in favor of "nodemailer". Besides, "mailer" uses "nodemailer" as its backend (it used to have its own SMTP client bu

"mailer" and its derivatives are deprecated in favor of "nodemailer". Besides, "mailer" uses "nodemailer" as its backend (it used to have its own SMTP client but it had a lot of shortcomings), so it doesn't really count. You could as well create your own wrapper areound "nodemailer" that would be even easier to use.