Max to, css and bcc recipients

Author: mrz1836

README.md

@@ -44,11 +44,13 @@ You can view the generated [documentation here](https://godoc.org/github.com/mrz
 
 ### Features
 - Supports multiple service providers _(below)_
+- Support basic [SMTP](https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol)
 - Plain-text and HTML content
 - Multiple file attachments
 - Open & click tracking _(provider dependant)_
 - Inject css into html content
 - Basic template support
+- Max restrictions on To, CC and BCC
 
 ### Supported Service Providers
 - [AWS SES](https://docs.aws.amazon.com/ses/)

config.go

@@ -42,6 +42,9 @@ type MailService struct {
 	FromUsername        string            `json:"from_username" mapstructure:"from_username"`                 // ie: no-reply
 	Important           bool              `json:"important" mapstructure:"important"`                         // whether or not this message is important, and should be delivered ahead of non-important messages
 	MandrillAPIKey      string            `json:"mandrill_api_key" mapstructure:"mandrill_api_key"`           // mandrill api key
+	MaxBccRecipients    int               `json:"max_bcc_recipients" mapstructure:"max_bcc_recipients"`       // max amount for BCC
+	MaxCcRecipients     int               `json:"max_cc_recipients" mapstructure:"max_cc_recipients"`         // max amount for CC
+	MaxToRecipients     int               `json:"max_to_recipients" mapstructure:"max_to_recipients"`         // max amount for TO
 	PostmarkServerToken string            `json:"postmark_server_token" mapstructure:"postmark_server_token"` // ie: abc123...
 	SMTPHost            string            `json:"smtp_host" mapstructure:"smtp_host"`                         // ie: example.com
 	SMTPPassword        string            `json:"smtp_password" mapstructure:"smtp_password"`                 // ie: secretPassword
@@ -80,6 +83,9 @@ func (m *MailService) StartUp() (err error) {
 
 	// Set any defaults
 	m.awsSesService.Endpoint = awsSesDefaultEndpoint
+	m.MaxToRecipients = maxToRecipients
+	m.MaxCcRecipients = maxCcRecipients
+	m.MaxBccRecipients = maxBccRecipients
 
 	// If the key is set, try loading the service
 	if len(m.MandrillAPIKey) > 0 {

email.go

@@ -166,22 +166,22 @@ func (m *MailService) SendEmail(email *Email, provider ServiceProvider) (err err
 		} else if len(email.Recipients) == 0 {
 			err = fmt.Errorf("email is a recipient")
 			return
-		} else if len(email.Recipients) > maxToRecipients {
-			err = fmt.Errorf("max TO recipient limit of %d reached: %d", maxToRecipients, len(email.Recipients))
+		} else if len(email.Recipients) > m.MaxToRecipients {
+			err = fmt.Errorf("max TO recipient limit of %d reached: %d", m.MaxToRecipients, len(email.Recipients))
 			return
-		} else if len(email.RecipientsCc) > maxCcRecipients {
-			err = fmt.Errorf("max CC recipient limit of %d reached: %d", maxCcRecipients, len(email.RecipientsCc))
+		} else if len(email.RecipientsCc) > m.MaxCcRecipients {
+			err = fmt.Errorf("max CC recipient limit of %d reached: %d", m.MaxCcRecipients, len(email.RecipientsCc))
 			return
-		} else if len(email.RecipientsBcc) > maxBccRecipients {
-			err = fmt.Errorf("max BCC recipient limit of %d reached: %d", maxBccRecipients, len(email.RecipientsBcc))
+		} else if len(email.RecipientsBcc) > m.MaxBccRecipients {
+			err = fmt.Errorf("max BCC recipient limit of %d reached: %d", m.MaxBccRecipients, len(email.RecipientsBcc))
 			return
 		}
 
 		// Send using given provider
-		if provider == Mandrill {
-			err = m.sendWithMandrill(email)
-		} else if provider == AwsSes {
+		if provider == AwsSes {
 			err = m.sendWithAwsSes(email)
+		} else if provider == Mandrill {
+			err = m.sendWithMandrill(email)
 		} else if provider == Postmark {
 			err = m.sendWithPostmark(email)
 		} else if provider == SMTP {