Send test email
documentedSend a test email to verify content.
GET https://api.unisender.com/ru/api/sendTestEmailMessagesno implementation yet0 runsInput
letter_id*
Email Letter ID
Letter ID created via createEmailMessage
email*
Recipient Email(s)
Comma-separated emails
Calls UniSender as you (your API key is your account); keychains.dev holds the credentials.