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Available solutions

You can develop your integration with MailUp by mixing the available solutions, taking advantage of the features they provide. Each listed item is a link to the correspondent documentation.

Development can be done starting from scratch learning from available samples (see docs for each solution), or you can use the RubyGem (that is a wrapper of REST API)


Comparison matrix

Here below there is a comparison matrix between available solutions.


(tick) = available

(warning) = available with restrictions (see specific notes for each case)


Create/Delete/Update lists (tick)     
Create/Delete/Update groups (tick)(tick)    
Read lists and groups (tick)(tick)    



Import recipient (single)(tick)(tick)(tick)(warning)1(warning)2  
Import of recipients (bulk) (tick)(tick) (tick)(warning)3 
Bulk import limit
(Mega Bytes )

MailUpImport : Multiple import by splitting in blocks,
up to 1,5 MB per block

SendMessageNL: as FTP case

Multiple import by splitting in blocks,
up to 7 MB per block
 N/A, successfully
tested with 50 MB
10 MB 
Force optin of unsubscribed recipient (single)?(warning)2(tick) (warning)2  
Force optin of unsubscribed recipients (bulk) (tick)  (tick)  
Unsubscribe recipient (single)(tick)(tick)(tick) (warning)2  

Unsubscribe recipient (bulk)

 (tick)  (tick)  
Read personal data fields settings (tick)(tick)    
Update recipients' personal data fields(tick)(tick)(tick) (tick)  
Check recipient's subscription status(tick) (tick)    
Add to group (single)(tick)(tick)(tick) (warning)2  
Add to group (bulk) (tick)(tick) (tick)  
Remove from group (single)  (tick)    
Remove from group (bulk)    (warning)4  



Create email message (tick)(tick)(tick) (tick) 
Read email messages (tick)(tick)    
Manage tags  (tick)    
Manage attachments (tick)(tick)(tick) (tick) 
Manage both embedded and not embedded images in the same message   (tick)   
Manage dynamic fields (tick)(tick)  (tick) 
Manage dynamic content (tick)?  ? 
Full content customization for each recipient   (tick)   
Allow mixing embedded and not embedded images in one email message   (tick)   
Transactional emails (account credentials after signup, password reminders...) (warning)5 (tick)   
Transactional emails (newsletters, customized messages) (warning)5 (tick)   
Promotional emails (tick)(tick)    
Send to a single recipient (tick)(tick)(tick) (warning)2,3 
Send to a group (tick)(tick)  (tick) 
Send to all list subscribers (tick)(tick)  (tick) 
Scheduled sending (tick)     
Get email statistics in real time (tick)(tick)   (tick)
Get email statistics (with scheduled process)    (tick)  



Create SMS (with dynamic fields) (tick)  (warning)6  
Manage dynamic fields (tick)     
Send SMS to a recipient (tick)  (warning)6  
Send SMS to a group/list (immediate & scheduled) (tick)  (warning)6  
Get SMS statistics in real time       
Get SMS statistics (with scheduled process)    (tick)  



Security levelMedium (HTTP with encrypted querystring
parameters in most of the pages)

Medium for MailUpImport web service
(HTTP, user authentication, and IP restriction)

Good for other SOAP web services
(HTTPS and user authentication)

"High" (OAuth2 with refresh token) "High" (TLS)"High" with sFTP or FTPs,
"Medium" without them 
 Medium  (HTTP with encrypted querystring
parameters in most of the pages)


(1) New recipients are added to list when a message is sent to them
(2) For this API the feature is designed for bulk operations, its massive use on single recipients may affect system performances
(3) New recipients are added when listed in enclosed "one2may.import" file
(4) Requires a customization
(5) Can be used for confirmation requests, not for massive use (see this Rate Limiting about SendSingleNewsletter)
(6) With the "Text message (SMS) sending from .CSV file" feature


Use cases

Synchronize recipients between your application and MailUp

FTP based integrations

You can use FTP Batch Processes for massive data transfer using files in CSV format. This feature can be used with very high numbers of recipients (import has been successfully tested with 4 millions of recipients in a single file) and it is configured on request by MailUp support team.

 Click here to know more about available FTP transfer types

You can request this feature to

  • Import recipients as subscribed
  • Import recipients as unsubscribed
  • Export unsubscribed
  • Export statistics
  • Export bounces

Data transfer is not in real time: it is usually configured as daily or weekly, hourly data transfer is feasible or it


You can use MailUpImport SOAP API for an immediate import of recipients. You can use StartImportProcess method, eventually combined with NewImportProcess if the number of recipient is higher than 5000. These methods also allow a batch import as "pending", with the confirmation email that has to be manually sent using the adimin console account. SOAP API is not bidirectional, since it does not allow export of recipients.


You can get the best of FTP and SOAP API by using SendMessageNL API method, which performs scheduled sending to a group of recipients that is specified on a file. In this case you have to transfer the file to MailUp before calling the method. Export of recipients can be done with an FTP based integration.


Rest API allows immediate and bidirectional import and export of recipients. Due to restriction on HTTP channel, no more than 7MB can be uploaded with a single import. For export of recipient the paging feature is recommended to keep control on maximum size of tranferred data. REST API is the only MailUp solution that allows removal of a single recipient from a group


You can configure webhooks to enable a real time  callback to your website when a recipient changes the subscription status or the personal data fields (e.g. by accessing to an autoprofile form). Callback method can be configured in order to include recipient's details as method parameter. Webhooks are managed by a worker process that is like a "frequent cron": you may experience some minutes of delay between the action and the corresponding callback.

Web forms


Manage suppression lists

You can contact MailUp support and ask configuration of an FTP based integration with a batch process that is configured to run hourly. This process has to be set to import in a new group (group name = file name) the recipents that are listed in the file to be imported. Then, when you access to MailUp admin console, you can schedule your campaign to be sent to "all subscribers except for the recipients that belong to a certain group". It should be easy for you to identify the right group because it has the name of the imported file plus a timestamp.

Send email/SMS campaigns from your CRM














Send transactional emails/SMS






Read statistics






















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