Understanding Validation Results
Our validation data have several parameters. For your convenience, for each email we additionally combine all of them into one simple value called "Result".
You can safely send an email to this address.
You should not try to send emails to this address. It is either bounce or disposable.
If an email is Catch-All or Role-based we mark it as Risky. See additional details and sending recommendations below.
We are unable to definitively determine this email’s status.
If you have a dedicated email server with your own IPs, unknown emails are normally safe for sending.
But if you use a third-party email provider that requires a bounce rate below 4%, these emails are not safe for sending.
This result occurs only when you abort a list validation process. We return to you the credits for all emails that we have not started validating yet and mark them as Aborted.
Detailed validation data
Also, we give you additional details about each email.
|Deliverable|| In this parameter we show the result of our communication with a recipient's mail server. It can have one of the following values: |
|Disposable||Disposable emails are temporary addresses used to avoid using a real personal account during a sign-up process. Common providers of disposable emails include Mailinator, AirMail, Guerilla Mail, 10 Minute Mail. Don’t send – these emails are fake or temporary emails and are not safe for sending.|
|Role||Role-based email addresses (like info@, welcome@, sales@, leads@) are addresses that are not associated with a particular person, but rather with a company, department, position, or group of recipients. They are not generally intended for personal use and have a strong correlation to people reporting emails sent to them as spam and abuse. That's why we marked such emails as Risky (in case they are deliverable)|
|Free||Email is marked free when its domain is supplied by a free email service provider like gmail.com, yahoo.com, etc. This parameter is not directly related to deliverability and is here just for your information. In certain contexts, businesses can receive better open/response rates when only sending to non-free email addresses.|
Technical details about Deliverable
With regard to the "Deliverable" parameter, we provide you with additional details when this value is Invalid or Unknown. We give such information in brackets, like this: Invalid (No Smtp).
|For Invalid the possible variants are:|
|Failed Syntax Check||The provided address is not syntactically correct|
|Mailbox Not Found||This address does not exist|
|Mailbox Quota Exceeded||Email address exists but the inbox is full, so it cannot accept emails.|
|No Smtp||There is no mail server, or even any MX record that is correct.|
|For Unknown the possible variants are:|
|Failed Smtp Connection||The mail server won't allow an SMTP connection. Most of the time, these emails will end up being invalid.|
|Forcible Disconnect||The mail server disconnects immediately upon connecting. Most of the time, these emails will end up being invalid.|
|Greylisted||Emails where we are temporarily unable to validate them. Usually, if you resubmit these emails, they will validate on a second pass|
|Mail Server Did Not Respond||The mail server is not responding to mail commands. Most of the time, these emails will end up being invalid.|
|Mail Server Temporary Error||The mail server is returning a temporary error. Most of the time, these emails will end up being invalid.|
|Timeout Exceeded||The mail server is responding extremely slowly. Most of the time, these emails will end up being invalid.|
|Antispam System||These servers have antispam systems that prevent us from validating their emails. You can submit these to us to look into.|
|Exception||These emails caused an exception when validating. If this happens repeatedly, please let us know.|