Domain Not Found: The domain name in the email address
Posted: Wed May 21, 2025 3:43 am
Emails Landing in Spam Folders: If your sender reputation has already taken a hit due to high bounces, complaints, or spam trap hits, your emails may be increasingly filtered into spam or junk folders by ISPs. Emails in these folders are rarely seen, leading to a dramatic drop in opens even if the addresses are technically valid. If recipients don't see your email in their primary inbox, they can't open it.
Industry Benchmarks vs. Personal Trends: While industry poland email list benchmarks provide a general context (e.g., retail might have a higher open rate than B2B, or certain niches like education might have very high engagement), the most critical comparison is your current performance against your historical averages. A consistent downward trend in your own open rates, regardless of where it stands against industry averages, is a strong indicator of a decaying list. If your open rates are consistently 5-10% lower than what you observed six months ago, without any major campaign changes, your list is likely getting dirty.
B. High Bounce Rates
A bounce occurs when an email cannot be delivered to the recipient's inbox. High bounce rates are among the most unequivocal signs of a dirty email list, directly impacting your sender reputation and future deliverability. They are categorized into two types: hard bounces and soft bounces.
Definition: The bounce rate is (Total Bounces / Emails Sent) * 100. A healthy bounce rate is typically very low, generally below 2-3%.
Hard Bounces (Fatal): These indicate a permanent delivery failure and are the most damaging.
Non-existent Email Address: The email address simply does not exist at the domain. This is the most common reason for hard bounces and a clear sign of an invalid address. For example, if you send to [email protected] and example.com has no john.doe account, it hard bounces.
Typographical Errors: Mistakes made during signup (e.g., gamil.com instead of gmail.com, or yahooo.com instead of yahoo.com). These are permanent errors that will always result in a hard bounce.
This can happen if a company goes out of business or changes its domain.
Industry Benchmarks vs. Personal Trends: While industry poland email list benchmarks provide a general context (e.g., retail might have a higher open rate than B2B, or certain niches like education might have very high engagement), the most critical comparison is your current performance against your historical averages. A consistent downward trend in your own open rates, regardless of where it stands against industry averages, is a strong indicator of a decaying list. If your open rates are consistently 5-10% lower than what you observed six months ago, without any major campaign changes, your list is likely getting dirty.
B. High Bounce Rates
A bounce occurs when an email cannot be delivered to the recipient's inbox. High bounce rates are among the most unequivocal signs of a dirty email list, directly impacting your sender reputation and future deliverability. They are categorized into two types: hard bounces and soft bounces.
Definition: The bounce rate is (Total Bounces / Emails Sent) * 100. A healthy bounce rate is typically very low, generally below 2-3%.
Hard Bounces (Fatal): These indicate a permanent delivery failure and are the most damaging.
Non-existent Email Address: The email address simply does not exist at the domain. This is the most common reason for hard bounces and a clear sign of an invalid address. For example, if you send to [email protected] and example.com has no john.doe account, it hard bounces.
Typographical Errors: Mistakes made during signup (e.g., gamil.com instead of gmail.com, or yahooo.com instead of yahoo.com). These are permanent errors that will always result in a hard bounce.
This can happen if a company goes out of business or changes its domain.