What does a hard bounce mean? - Online Help | Zoho Campaigns

What does a hard bounce mean?

A hard bounce indicates a permanent delivery failure. Common reasons include:

     The recipient email address doesn’t exist.

     The domain name doesn’t exist.

     Typos in the email address (e.g., gnail.com instead of gmail.com).

     The recipient’s email server blocks delivery.

The email address is inactive or expired.

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                                                                                                                          • Related Articles

                                                                                                                          • What is the difference between hard and soft bounces?

                                                                                                                            A soft bounce is just a temporary delivery failure. It doesn’t necessarily mean the email address is invalid or no longer active, so you can try to send emails to these addresses again. These are a few common reasons for a soft bounce: The ...
                                                                                                                          • What does “bounce rate” mean?

                                                                                                                            Bounce rate = (Number of bounced emails / Number of emails sent) × 100. It includes both hard (permanent) and soft (temporary) bounces.
                                                                                                                          • Why doesn't Zoho Campaigns delete hard bounce contacts?

                                                                                                                            At Zoho Campaigns, we store hard bounce contacts in a separate mailing list. Whenever our users try to add new contacts to their mailing list, we will verify it with the hard bounce list. If the user tries to add contacts that are already in the hard ...
                                                                                                                          • How can I avoid email bounces?

                                                                                                                            You can practice the following techniques to avoid email bounce: Don't use purchased mailing lists. Use the double opt-in technique to prevent the entry of invalid email addresses into your mailing list. Regularly clean your mailing list using email ...
                                                                                                                          • What does a soft bounce mean?

                                                                                                                            A soft bounce is a temporary delivery failure, typically due to the recipient’s mailbox being full or technical issues on the recipient's email server.
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