Bounces are those email addresses to which Zoho CRM could not deliver your email. There may be many reasons why this happens. Based on these reasons, bounces are largely classified as hard bounces and soft bounces.
Email addresses are marked as hard bounces, when Zoho CRM finds that emails are permanently undeliverable to those email addresses. In such a case these hard bounced email addresses will be blocked. This means you will not be able to send any mails to them from Zoho CRM again.
Email addresses are marked as soft bounces when Zoho CRM finds that emails cannot be delivered only temporarily to those email addresses. In such a case, you will be allowed to send a mail to the soft bounced email address five more consecutive times. If at the end of the fifth time, the mail is not deliverable, it will be considered as hard bounce and the email address will be blocked.
Following are the most common reasons why your email may have bounced.
A hard bounce is that email address to which an email is permanently undeliverable by Zoho CRM for different reasons. A few of them are:
When an email has hard bounced, it will be blocked by Zoho CRM permanently.
A soft bounce is that email address to which an email is temporarily undeliverable by Zoho CRM for various reasons. A few of them are:
When an email has soft bounced, you will still be allowed to send further emails upto five times. If at the end of the fifth consecutive time, Zoho CRM is not able to deliver the email, the soft bounce gets converted as a hard bounce and so the email address will be blocked permanently.
If an email address has been marked as soft bounced, you will be able to send the email to the recipient five more times. If at the end of the fifth consecutive attempt, the mail delivery fails, then it will be marked as hard bounced and further emails to this email address will not be allowed.
If your email to a valid email address has been marked as hard bounced, it may be largely because Zoho CRM has been blocked by spam filters or recipient firewall. This happens in two cases:
If you are convinced that the email address is valid, you can request Zoho CRM Support at firstname.lastname@example.org to check and unblock a hard-bounced email address.
If Zoho CRM is blocked, we will immediately take the necessary steps to whitelist our IP address. In case your email has bounced because Zoho CRM is blocked, please do one of the following:
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