Cyrano Email Deliverability Status Explained  (Powered by ZeroBounce)

Green – Good to go. Auto-accepted by Cyrano.

Red – NOT Allowed.

Purple – Accepted but NOT recommended may hurt your brand reputation.

 

Status & SubStatus

valid
These are emails that we determined to be valid and safe to email, they will have a very low bounce rate of under 2%. If you receive bounces it can be because your IP might be blacklisted where our IP was not. Sometimes the email accounts exist, but they are only accepting mail from people in their contact lists. Sometimes you will get throttle on number of emails you can send to a specific domain per hour. It’s important to look at the SMTP Bounce codes to determine why.

  • alias_address
    These emails addresses act as forwarders/aliases and are not real inboxes, for example if you send an email to forward@example.com and then the email is forwarded to realinbox@example.com. It’s a valid email address and you can send to them, it’s just a little more information about the email address. We can sometimes detect alias email addresses and when we do we let you know.
  • leading_period_removed
    If a valid gmail.com email address starts with a period ‘.’ we will remove it, so the email address is compatible with all mailing systems.

invalid
These are emails that we determined to be invalid, please delete them from your mailing list. The results are 99.999% accurate.

  • does_not_accept_mail
    These domains only send mail and don’t accept it.
  • failed_syntax_check
    Emails that fail RFC syntax protocols
  • mailbox_quota_exceeded
    These emails exceeded their space quota and are not accepting emails. These emails are marked invalid.
  • mailbox_not_found
    These emails addresses are valid in syntax, but do not exist. These emails are marked invalid.
  • no_DNS_entries
    These emails are valid in syntax, but the domain doesn’t have any records in DNS or have incomplete DNS Records. Therefore, mail programs will be unable to or have difficulty sending to them. These emails are marked invalid.
  • possible_typo
    These are emails of commonly misspelled popular domains. These emails are marked invalid.
  • unroutable_ip_address
    These emails domains point to an un-routable IP address, these are marked invalid.

catch-all
These emails are impossible to validate without sending a real email and waiting for a bounce. The term Catch-all means that the email server tells you that the email is valid, whether it’s valid or invalid. If you want to email these addresses, I suggest you segment them into a catch-all group and know that some of these will most likely bounce.

spamtrap
These emails are believed to be spamtraps and should not be mailed. We have technology in place to determine if certain emails should be classified as spamtrap. We don’t know all the spamtrap email addresses, but we do know a lot of them.

abuse
These emails are of people who are known to click the abuse links in emails, hence abusers or complainers. We recommend not emailing these addresses.

do_not_mail
These emails are of companies, role-based, or people you just want to avoid emailing to. They are broken down into 6 sub-categories “disposable”,”toxic”, “role_based”, “role_based_catch_all”, “global_suppression” and “possible_trap”. Examine this file and determine if you want to email these address. They are valid email addresses, but shouldn’t be mailed in most cases.

  • global_suppression
    These emails are found in many popular global suppression lists (GSL), they consist of known ISP complainers, direct complainers, purchased addresses, and known litigators.
  • possible_trap
    These emails contain keywords that might correlate to possible spam traps like spam@ or @spamtrap.com. Examine these before deciding to send emails to them or not.
  • role_based
    These emails belong to a position or a group of people, like sales@ info@ and contact@. Role-based emails have a strong correlation to people reporting mails sent to them as spam and abuse.
  • disposable
    These are temporary emails created for the sole purpose to sign up to websites without giving their real email address. These emails are short lived from 15 minutes to around 6 months. There is only 2 values (True and False). If you have valid emails with this flag set to TRUE, you shouldn’t email them.
  • toxic
    These domains are known for abuse, spam, and bot created emails.
  • role_based_catch_all
    These emails are role-based and also belong to a catch_all domain.

unknown
These emails we weren’t able to validate for one reason or another. Typical cases are “Their mail server was down” or “the anti-spam system is blocking us”. In most cases, 80% unknowns are invalid/bad email addresses. Our partner Zerobounce the lowest “unknowns” of any email validator, and they don’t make this statement lightly. They tested email lists at over 50 different validation companies to compare results. If you do encounter a large number of unknowns, please reachout to Cyrano Support (support@cyranosystems.com).

  • antispam_system
    These emails have anti-spam systems deployed that are preventing us from validating these emails. If this happens repeatedly, please let us know (support@cyranosystems.com)
  • exception_occurred
    These emails caused an exception when validating. If this happens repeatedly, please let us know (support@cyranosystems.com).
  • failed_smtp_connection
    These emails belong to a mail server that won’t allow an SMTP connection. Most of the time, these emails will end up being invalid.
  • forcible_disconnect
    These emails belong to a mail server that 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. A lot of times if you resubmit these emails they will validate on a second pass.
  • mail_server_did_not_respond
    These emails belong to a mail server that is not responding to mail commands. Most of the time, these emails will end up being invalid.
  • mail_server_temporary_error
    These emails belong to a mail server that is returning a temporary error. Most of the time, these emails will end up being invalid.
  • timeout_exceeded
    These emails belong to a mail server that is responding extremely slow. Most of the time, these emails will end up being invalid.