How to troubleshoot email spam issues with Outlook and Hotmail in Klaviyo and Mailgun?

Email marketer from Quora shares to ensure your email content is not triggering spam filters. Avoid using spam trigger words, excessive capitalization, and large images without alt text. Test your emails with a spam checker before sending.

Email marketer from EmailGeek forum recommends segmenting your email list and removing inactive subscribers. Sending to engaged users can improve your sender reputation with email providers like Outlook and Hotmail.

Email marketer from Sendgrid advises to A/B test your email content. Test different subject lines, content, and calls to action to identify what resonates best with your audience and improves engagement, which can positively impact deliverability.

Email marketer from Emailonacid mentions to check if your IP or domain is blacklisted. Use tools like MXToolbox to check if your IP or domain is listed on any blacklists, which can significantly impact your email deliverability to Outlook and Hotmail.

Email marketer from Stackoverflow recommends checking feedback loops (FBLs). Subscribe to FBLs offered by Outlook and Hotmail to receive reports about spam complaints from their users, allowing you to address any issues.

Email marketer from Litmus suggests previewing your emails in Outlook and Hotmail. Use email testing tools to preview how your emails render in different email clients and devices to ensure a consistent experience and avoid formatting issues that can trigger spam filters.

Email marketer from Reddit suggests checking your sender reputation. Hotmail and Outlook use sender reputation to filter spam. Use Microsoft's Sender Reputation Data service to see if your IP address is listed.

Email marketer from Mailjet suggests monitoring your IP address reputation. Use tools like Microsoft's Smart Network Data Services (SNDS) to monitor your IP reputation and identify any issues affecting deliverability.

Marketer from Email Geeks mentions that they're also using the default Google DKIM key, which is not aligned

Email marketer from Gmass explains to maintain consistent sending volume. A sudden spike in email volume can trigger spam filters in Outlook and Hotmail. Gradually increase your sending volume to build a positive sending reputation.

Expert from Spam Resource explains that high complaint rates are a major reason for deliverability issues with Outlook and Hotmail. They suggest monitoring complaint feedback loops and taking action to reduce complaints by improving email relevance and targeting.

Expert from Word to the Wise explains that maintaining a positive sender reputation is vital for avoiding spam filters. They advise focusing on sending relevant content, authenticating your email, and following best practices to improve your reputation with email providers.

Expert from Email Geeks explains to fix SPF issues by doing include:_spf.google.com.

Expert from Spam Resource shares that Microsoft provides tools like SNDS (Smart Network Data Services) and JMRP (Junk Mail Reporting Program) to monitor your IP reputation and user complaint rates. Regularly checking these tools can help you identify and address deliverability problems.

Expert from Email Geeks suggests sending mail to aboutmy.email to confirm that the mail is passing as it leaves the system.

Expert from Email Geeks confirms that the SPF "include" adds in the IPs needed to send from Google safely.

Expert from Email Geeks responds to DKIM issues and suggests following Google’s directions to add DKIM signing.

Expert from Word to the Wise shares that engagement metrics like open rates and click-through rates influence deliverability. Focus on improving engagement by sending personalized content, segmenting your audience, and optimizing your email design to improve your chances of reaching the inbox.

Expert from Email Geeks explains that the SPF record contains no IP ranges, and to publish the IPs sending from, referencing the IPv6 IP contained in the email to aboutmy.email.

Expert from Email Geeks explains DKIM configuration is always specific to the platform they're sending from and if they see this on other Google Workspace sends, then yeah, it's probably always because they missed this step.

Documentation from Sparkpost explains that avoiding spam traps is crucial. Spam traps are email addresses used by email providers to identify spammers. Regularly clean your email list to remove old or invalid addresses.

Documentation from Klaviyo shares that to improve deliverability, you should authenticate your sending domain by setting up SPF and DKIM records. This helps prove to email providers like Outlook and Hotmail that you're authorized to send emails on behalf of your domain.

Documentation from RFC explains to implement DMARC correctly. DMARC helps email providers like Outlook and Hotmail verify that your emails are authorized. Ensure your DMARC policy is set to 'quarantine' or 'reject' to protect your domain from spoofing.

Documentation from Mailgun explains that proper email authentication is critical for deliverability. Ensure you've correctly configured SPF, DKIM, and DMARC records for your sending domain in Mailgun to improve your chances of reaching the inbox.

Documentation from Microsoft explains that Outlook.com has policies to protect its users from spam. If you're a business sending emails, ensure you're following best practices for sending bulk emails, including authenticating your email with SPF, DKIM, and DMARC.

Documentation from Google shares to adhere to Google's bulk sender guidelines. Even though it's for Gmail, following these guidelines can improve your overall sender reputation and deliverability across different email providers, including Outlook and Hotmail.