Deliverability Troubleshooting

Overview Microsoft Outlook 365 Advanced Threat Protection (ATP) is scheduled to release in April 2020, and will impact your email deliverability if you have not whitelabeled your sending infrastruc...

Overview If you’re finding that your emails are ending up in the spam folder when you're first getting started with Klaviyo, it may be the case that your From/Reply-to email address is a Gmail, Yah...

Overview A spam trap is an email address used to identify senders who are not following best practices or sending unsolicited email. Spam traps are commonly used to place senders in the spam folder...

Overview A list will be blocked by Klaviyo's abuse prevention system if it contains known spam traps or a high percentage of “bad” email addresses. If your list fails a health check, you will need ...

Overview A "bounce" is when an email is not delivered or is rejected by the recipient's email server. If your account has a high number of bounces, this can have a negative impact on your deliverab...

Overview If you believe you're experiencing deliverability problems, the next step is to determine whether these problems are stemming from sender reputation issues within your control. You can al...

Overview There are several reasons why you may see Klaviyo preview emails land in your spam folder. Please review the possibilities below, and reach out to our Customer Success Team if you need any...

Overview Google uses its own complex system to scan incoming emails and automatically sort them. While this sorting process is powered by algorithms that are not made public, as an email marketer, ...