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Sends test emails to all recipients of a specific recipient list in Optimizely Campaign.

All mailing types and mailings in any status can be sent with this method.



  • The test mail is sent to at most 1000 recipients to prevent major mistakes.
  • The actual mails are sent asynchronously. So, you should not delete any recipient immediately after calling this method.

Type: int[ ]


sessionIdStringID of the session
mailingIdlongID of the mailing
recipientListIdlongID of the recipient list

Must be a test recipient list and needs not to be configured for the given mailing.

Return values

For each recipient:

  • 0: if the mail has been spooled
  • 1: if the recipient is blocked
  • 2: if the recipient is unsubscribed
  • 3: if the recipient was not found
  • 4: if the recipient list is invalid
  • 5: if the recipient is blocked by the mailing's target group
  • 6: if the recipient has caused too many bounces

Code structure

int[] sendTestMailToAll(String sessionId, long mailingId, long recipientListId)