What do words like "free" and "percent off" typically trigger in email communication?

Words like "free" and "percent off" commonly trigger spam filters in email communication because these terms are frequently associated with promotional content that may be seen as unsolicited or overly sales-driven. Spam filters are designed to identify and mitigate unwanted emails, and certain keywords are known to increase the likelihood of an email being flagged or routed directly to a spam folder.

Using such promotional language can lead to issues with email deliverability, meaning that even if the intent is to engage the recipient with a valuable offer, the email may never reach their inbox at all. Therefore, while these words are indeed attractive in marketing contexts, they can significantly impair the intended outreach by causing emails to be filtered out before recipients have the chance to engage with them. Recognizing this is crucial for crafting effective email campaigns that achieve the desired reach and engagement.