Customise and upgrade your mailing
Addon codes are a form of tag which lets our operations team know that something special should happen to your mailing. The most pronounced addon code is "FIRST_CLASS". This upgrades your campaign to be sent first class.
Other Addon codes are limited per region and so, some options may not be available.
You will also receive an addon code when you request to do a custom job. Contact your account manager to discuss potential upgrade options. Once you've discussed exactly what you would like to happen for your mailing, your account manager would give you a custom addon code.
Only you can use your custom addon code. If you have multiple accounts they will all need to be confirmed by the account manager before they can use the custom addon code.
API addon codes
If you wish to include an addon code for your API send it needs to be included as a comma separated string in the parameter "addons".
For example: "Addons": "FIRST_CLASS,CONFIDENTIAL",
Please confirm the use of addons with your account manager before use, as unauthorised addon codes may be delayed in production.