Each contact's email carries a status so you know how confident you can be before you hit send. Here's what each one means.
These email addresses have been checked and confirmed as active and deliverable. They're safe to send to, with a very low chance of bouncing.
If you want to protect your sender reputation and keep your bounce rate low, prioritise these. They're your safest, most reliable contacts.
These addresses couldn't be confirmed either way. It's not that they're known to be bad — it's that there's no reliable signal to tell whether they're deliverable or not, so the outcome is unknown.
You can still send to them, but treat them with more caution: they carry a higher chance of bouncing than verified ones. Many people send to these separately, or in smaller batches, to avoid affecting the deliverability of their main sends.
No email address is held for this contact. You can still reach them through their other details — such as their LinkedIn profile or the company phone number — where available.
Tip: you can filter the database by email status, so you can pull a list of only verified contacts when deliverability matters most — for example, when warming up a new sending domain.