Email sending through API

[jbelien]

Currently password reset email is sent via SMTP, would be nice to be able to use an API.

Examples:

• https://www.mailgun.com/email-api/
• https://www.sparkpost.com/features/email-api-integration/
• https://sendgrid.com/solutions/email-api/
• https://www.mailjet.com/email-api/

[jbelien]

@mailjet provides SMTP relay: https://www.mailjet.com/feature/smtp-relay/ 🎉