In email marketing, the tracking of email deliverability is generally 90-99% accurate, but it can vary depending on several factors:

🔹 Successfully Delivered Emails → Most email service providers (ESPs) rely on delivery reports from mail servers, which can track deliverability with up to 99% accuracy.

🔹 Bounce Rate (Returned Emails) → If an email address is invalid (hard bounce) or there is a temporary issue (soft bounce), ESPs can usually detect and report this accurately.

🔹 Emails Marked as Spam → Technically, an email may be considered “delivered,” but if it lands in the spam folder, ESPs may not be able to track this.

🔹 Open and Click Tracking → Tracked using tracking pixels and special links, but privacy settings (such as Apple Mail Privacy Protection) can sometimes distort the data.

Overall Conclusion

✅ Email deliverability is typically tracked with 90-99% accuracy.

⚠ Spam filtering and privacy settings may reduce tracking accuracy.

🔍 To ensure more precise analysis, it is essential to track open rates, click-through rates, and conversions together. 😊