You may want to send a message to a group of users and both the message and the recipients list are already available in the MailUp console.

SOAP API

1. If the message has to be sent to all the recipients in a list the suggested method is WS_MailUpSend.SendNewsletter. Parameters "send_to = ALL" , list ID, message ID and time and date of sending must be specified. Message and list IDs can be found at the page Settings > Codes Tables  in the MailUp console, or using GetLists() and GetNewsletters() methods.
2. If the recipients belong to some groups in a list, when calling the SendNewsletter() method the group IDs must be specified as well.
3. If the users share data that can be extracted using one of the MailUp filters (personal data, activity and geolocation filters, available in the Marketing+ package) when calling the SendNewsletter() method the filter to be applied must be indicated as well. Filters can be used in addition or as an alternative to groups. The great advantage of using them lies in the fact that all the recipients matching a certain condition are automatically included in the filter results, whereas a user must be inserted into a group for group membership.

Similar to Case 1, but in this case a group of recipients has to be imported as well. Some of these recipients might be already subscribed in MailUp due to a previous signup to a newsletter, some others might be new subscribers. Here below some alternative solutions are listed, refer to Comparison Matrix to see how many recipients can be loaded with each solution.

SOAP API

1. Through WS_MailUpImport methods a new temporary group is created (CreateGroup(groupName)) and a group of recipients is imported to it (StartImportProcess(groupID, recipients,…)). This operation may last several minutes, depending on how large the group is, and it can be monitored using GetProcessDetails(). Once the import has completed, SendNewsletter(groupID) method can be used to perform the sending. At the end of the process the group which was created for the purpose must be deleted using DeleteGroup(). 
   
   
2. The procedure above described is less effective when there are large amounts of data to be imported, so it may be useful to use an alternative procedure that provides for a "bulk" import from a file following an input via web service. SendMessageNL(fileName, listId, messageId, timeDateSending,…) method allows to schedule a sending for the desired time and date, then asynchronously executes the following operations:
   
   1. Creation of a temporary group named "Automatic NN", where NN is a progressive number
   2. Import to this group of the recipients indicated in the file
   3. Sending of the message at the scheduled time and date
      
      

REST API

REST API supports only sending to a single group or to the whole list

1. To import recipients into a group of a MailUp list you may use POST/Console/Group/{ID_GROUP}/Recipients, while POST /Console/List/{id_List}/Recipients can be used to simply import into a MailUp list without specifying a group. Use  POST  /Console/List/{ID_LIST}/Group  if you also need to create a new group. 
2. Use the methods listed in Case #1 for sending email message with REST API

LIST+

List+ allows you to enclose a list of recipients to the message to be sent (by using a file named one2many.import) instead of sending to lists or groups that are already present in MailUp. Click here for more information about this feature

In some cases it may be necessary to import into MailUp a message created using an external system.

SOAP API

The CreateNewsletters() method allows the creation of a new message where the parameter to be passed is the body of the message (html, text or URL that points to the html file).
It is also possible to use the SendNewsletterFast() method, which conveys to a single call the information that can be drawn from the calls to CreateNewsletters() and SendNewsletter() methods.

REST API

REST API provides more features than SOAP API about creation and editing of an email message. With REST you can fully handle message tags, images and attachments.

1. To create a message use POST /Console/List/{id_List}/Email, passing message content as parameter. Check out this page to know more about the available options
2. Use the methods listed in Case #1 for sending email message with REST API

LIST+

With List+ you can create an email message with your email client or your application and send it to a MailUp specific email address. Depending on the specified address, this action can lead to

• save email message to MailUp and send it to all the recipients of a MailUp list
• save email message to MailUp and send it to all the recipients of one or more groups in a MailUp list
• save email message to MailUp without sending it
• save email message to MailUp and send it to a recipient for test purposes

This solution is very powerful if you want to work outside the MailUp console account and it has some interesting additional features like automatic upload of images, support for dynamic fields and sender verification. In addition, List+ allows you to enclose a list of recipients (by using a file named one2many.import) instead of sending to existing lists or groups.

SMTP+

With SMTP+ you can create email messages with your email client or your application and send them to the recipients through MailUp. In this case MailUp acts mainly as a high deliverability SMTP server, but it also provides important features like bounce management and statistics. The content of sent message is not saved to MailUp and delivery speed depends on agreed bandwidth for your account.

Most customers need to track campaign results. When the same message is sent more than once (three different times, to three different groups), statistics are accumulated and pertain to all mailings, not the three individual mailings. To work around, you can make a copy of a message by cloning it before sending. 

SOAP API

You can use the CloneMessage() method

REST API

You can use GET /Console/List/{id_List}/Email/{id_Message} to get message content and then you need to create an identical message with POST /Console/List/{id_List}/Email