Now that you know what hard and soft bounces are, you can view bounce details in your email campaign report. It's a good idea to keep a close eye on your bounce rate to be sure your emails are reaching your contacts.
This can help you to abide by spam laws and avoid bounce suspensions. Can you tell us more about your experience today? Sorry we couldn't be more help. Can you tell us about your experience today? Get the job done with a pro From training to full-service marketing, our community of partners can help you make things happen. Things to know Mailchimp cannot predict whether or not an email will bounce. The receipts for your bounces will be available in your email reports for 30 days after the email is sent.
Different internet service providers ISPs bounce email messages based on their own rating systems and definitions. Hard bounces A hard bounce indicates a permanent reason an email cannot be delivered. Recipient email address doesn't exist. Recipient email server has completely blocked delivery.
Note There are occasionally cases in which valid email addresses will hard bounce. Technical Support Have a question? Paid users can log in to access email and chat support. As a result, a "return to sender" message also known as a SMTP Reply is applied and sent from the recipient's mail server with a more detailed explanation for the bounce back.
It's an annoying occurrence in email sending. But, as common as they may be, senders go nuts over bounced emails. So, how do you keep from going nuts? This is largely due to the fact that in some cases, a bounced email really is a technical error that can be remedied with some due diligence.
Still, with a quick fix, your bounces should go down, right? You will usually receive an auto-reply to your message that gives you a reason for the delivery failure. There are two types of bounces you can run into when sending email — hard bounces and soft bounces. Common reasons for hard bounces are invalid email addresses, the email server no longer exists, misspelled domain names or intended recipient addresses, etc.
Most ESPs Mailgun included will stop attempting to send hard bounce messages after the first attempt. If it has nowhere to go, not even we can deliver it.
On the other hand, soft bounces temporary failures are unable to be delivered due to some kind of temporary circumstance.
What kind of temporary circumstance? In these cases, most ESPs will attempt delivery a few more times in case circumstances change, and then stop after several tries.
If you are sending to a list for the first time without validating first, you might see a larger hard bounce rate due to factors like typos. As we stated earlier, just remove those addresses from the list to bring your hard bounces down. This cuts down on wrong addresses, giving you a cleaner mailing list from the start, and a better sender reputation.
For others, it can get a little complicated. Some senders might want to continue to send to inboxes that are full under the assumption that those inboxes will eventually be cleaned by the recipient in order to free up space for more emails.
Full inboxes are usually a telltale sign of an older email list , and should be treated as an invalid email and cleaned from the list entirely. Yes, ESPs will limit how much damage you do to your reputation, and this can be reflected in your soft bounces. Before you bring out your torches and pitchforks — hear us out.
Allowing risky sending to continue from a shared sending IP hurts well-meaning senders, and an ESP needs to take care of every sender — including careless ones. There are other cases beyond soft bounces in which you can find yourself limited while sending. Sending too many messages at one time without a proper warm-up, hitting spam filters with risky sending practices, or recipients that did not consent to your email messages and complain are a few examples of factors that affect your sending limits, too.
If you find yourself in this situation, the first thing you should look at is your list. How old is it? How were these contacts obtained? When was the last time it was cleaned? Cleaning it up should be your top priority. Sending to engaged, consenting users alongside well constructed, relevant messages is the best way to improve your reputation and get out of soft bounce purgatory and into delivery heaven.
It is possible for the ESP to make a mistake and misclassify your domain or IP address as risky, in which case your ESP will have a recovery process in place to solve it. Want to know more about email best practices? Bounces are almost always a symptom of out-of-date or poor sending practices, and that means poor deliverability. In the non-delivery report, the problem may be stated in many ways, such as:. Perhaps, a user deleted the account. Another common reason is a server-level trigger.
In Woodpecker these unverified or non-working email addresses are called invalids. Thanks to native integration with Bouncer , email verification and validation tool, all the email addresses on your list are checked and verified before sending.
This way the risk of hard bounces is minimized. If your email address or the IP address you are using are blacklisted, no messages you send in bulk will be delivered to recipients. To troubleshoot this issue, contact a hosting provider or the email admin. They should offer an explanation of whether or not your IP or domain is blacklisted and provide you with blacklist removal instructions.
Incorrect file attachment Most email hosting providers have file attachment restrictions — both regarding the type and the size of the contents. Gmail has a 25 MB file attachment limit — exceeding it might trigger bouncing. How to know that an email was returned because of size file issues? Watch out for this email bounce back code:. Server misconfiguration This type of hard bounce is also the most obscure one since you will not necessarily get a non-delivery report about it.
So, if your email marketing management system detected email bounce but you got no NDR to confirm it, consider STMP misconfiguration the likeliest reason for malfunction. Since you have more power over managing and avoiding soft bounces, knowing why they happened can help you directly improve the results of your cold email campaign.
Here are the 5 most common soft bounce reasons:. If you are greylisted, the following bounce back code will come along with NDR report:. After a needed time frame passes, the server will issue another request and complete the delivery process. A recipient is using an auto-responder If a reader uses a pre-deployed vacation response template, it can impact email delivery to his inbox negatively.
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