You can mention the user's referral code by inserting the variable {{user.referral_code}} in your email message.

Our CSV importer now allows you to import even more data, including HTTP referrer, locale/language, and UTM parameters. See this guide for a full list of fields you can import.

Besides an email subject, you can also add a preheader text - a customizable short teaser of the email's content, usually displayed right after the subject line. It's a good way to complement your subject line with the intent to capture the recipient's attention and improve open rate.

You can now create multiple API keys and give each a unique name, such as production or staging. Additionally, you can roll/expire API keys that are no longer being used or have been compromised.

Prefinery now detects and blocks referrals using plus address variations of the same email (e.g. name+test123@gmail.com) and dot address variations when using Gmail (e.g. first.last@gmail.com). While we don't block these variations from signing up, we will block the referral so people can't game your campaign.