Select SMTP: Select the SMTP option you want to use, either our Open SMTP (Mailgun) or your own custom SMTP credentials, if you use the second option, no sensitive data will be stored.
Reference: This will be the reference of the email, 45 characters maximum, stored publicly on the Waves Blockchain
First name: The first name of the sender
Last name: The last name of the sender
Email sender: The email of the sender
Email recipient: The email(s) of the recipient(s), separated by "," if multiple recipients
Attachment: You can select an attachment here, recommended 2MB per file and 10MB total
Message: The message to include in the email
Transaction fee: Either SIGN token or Waves can be used to pay the transaction fee
Certification Fee: The cost in SIGN token per certification or the amount of your certification credit available (cost is 1 credit per certification)
Certify Email: Sign and broadcast the transaction