What can I do if users aren't receiving email verification emails due to company spam filters?
Summary
What email marketers say10Marketer opinions
Email marketer from GlockApps Blog shares that if users aren't receiving verification emails, it's crucial to test your email setup with various spam filters using a tool like GlockApps. This allows you to identify issues with your content, authentication, or IP reputation that may be triggering spam filters.
Email marketer from Stack Overflow explains that failing to properly set up SPF or DKIM records can cause verification emails to be rejected or sent to spam folders. Proper authentication helps prove that your emails are legitimate.
Email marketer from SuperOffice Blog recommends explicitly asking users to add your sending email address to their address book or whitelist your domain. Providing clear instructions on how to do this can help ensure that your emails bypass spam filters.
Email marketer from Mailjet Blog explains that to combat corporate spam filters, ensure your sending IP address isn't blacklisted, authenticate your email with SPF, DKIM, and DMARC, and monitor your sender reputation. Also, provide clear instructions for users to whitelist your domain or email address.
Email marketer from Email On Acid Blog shares that certain words and phrases are more likely to trigger spam filters. Avoiding these 'spam trigger words' in your email subject lines and body can help improve deliverability.
Email marketer from Litmus Blog shares that maintaining a clean email list by regularly removing inactive or invalid email addresses improves sender reputation. High bounce rates can negatively impact deliverability, so list hygiene is crucial.
Email marketer from Reddit suggests that corporate filters often block emails based on content. He shares that simplifying the email content, removing excessive links or images, and using plain text can sometimes bypass these filters.
Email marketer from Email Marketing Forum suggests that excessive use of promotional language or all caps can trigger spam filters. Providing valuable and relevant content, and refraining from overly aggressive marketing tactics, can help avoid this issue.
Marketer from Email Geeks suggests relaxing DMARC settings and checking the sender score for IP dips, while also noting the 'From' format may be causing issues with corporate filters.
Email marketer from HubSpot Blog suggests that personalization of email content makes emails relevant for individual receipients, increasing engagement and reducing the chance of being filtered as spam. Personalized subject lines and email body can help bypass spam filters that look for generic content.
What the experts say9Expert opinions
Expert from Email Geeks suggests that if possible, the user should ask one of the recipients experiencing the issue to check with their corporate IT to determine if their corporate filter is blocking the emails. If that is not possible, look for common factors like filtering software in the domains where the email is being dropped and consider if anything about the content appears suspicious.
Expert from Email Geeks suggests using delivery logs from Customer.io or Mailgun to confirm if the email was sent and accepted by the recipient's MX server.
Expert from Word to the Wise explains that dealing with false positives requires persistent monitoring of delivery and engagement metrics. She shares that prompt action when deliverability issues arise and working to understand the specific filtering rules employed by each corporate recipient is crucial for resolution.
Expert from Email Geeks asks if the user has cross-referenced DMARC feedback reports with instances where emails are believed to be missing, as a DMARC issue might be easier to resolve than general strict enterprise filters.
Expert from Email Geeks recommends contacting Customer.io support, as they have access to more detailed information and tools and are invested in resolving delivery issues.
Expert from Email Geeks asks for examples of the bounce messages from Customer.io, offering potential additional help.
Expert from Email Geeks explains that K12 schools often have strict email policies allowing only pre-designated domains, suggesting obtaining non-work email addresses for recipients.
Expert from Word to the Wise explains that proper email authentication (SPF, DKIM, DMARC) is critical for deliverability. He also emphasizes the importance of monitoring DMARC reports to identify and address potential authentication issues that may be causing corporate filters to block emails.
Expert from Email Geeks shares that 2-factor authentication is becoming more common, so users are familiar with receiving codes or links via email. If email is the only verification method, it should be clearly indicated on the screen that users need to check their email, including the spam folder.
What the documentation says4Technical articles
Documentation from SendGrid explains that using a dedicated IP address can improve deliverability by establishing a positive reputation. It also recommends warming up the IP address gradually and monitoring deliverability metrics to identify and address issues proactively.
Documentation from DKIM.org explains that implementing DKIM (DomainKeys Identified Mail) adds a digital signature to your emails, which receiving mail servers can use to verify that the email hasn't been tampered with and is genuinely from your domain. This helps improve deliverability and reduce the risk of emails being marked as spam.
Documentation from Microsoft explains that Exchange Online Protection (EOP) uses various anti-spam technologies. Understanding and addressing the factors that EOP considers when filtering spam can help improve deliverability to recipients using Microsoft services.
Documentation from RFC 2822 explains that adhering to standard email formatting guidelines, including proper header syntax and message structure, can help ensure that emails are correctly interpreted by receiving mail servers and are less likely to be flagged as spam.