Does email size affect spam trap triggers?
Summary
What email marketers say10Marketer opinions
Email marketer from Gmass explains that large emails with heavy images can slow down deliverability. While it doesn't directly trigger spam traps, it may impact the time it takes for email to get delivered. Spam emails should be avoided by keeping the email short.
Email marketer from StackOverflow clarifies that large attachments are more likely to trigger spam filters than the size of the HTML content itself. Optimize images and consider linking to files hosted online to minimize size.
Email marketer from Sendinblue Blog recommends keeping email size under 102KB for optimal deliverability. Larger emails can be flagged as spam by some providers and lead to rendering issues across different email clients, decreasing overall ROI.
Marketer from Email Geeks shares that content is not related to spam traps, but data is. Hitting spam traps relates to list collection and hygiene.
Email marketer from EmailOctopus Blog shares that excessively large emails can negatively affect deliverability due to longer loading times and potential for timeouts. While not directly triggering spam traps, this can still harm your sender reputation.
Email marketer from Reddit explains that while email size itself might not trigger spam traps, overly large emails with messy code can increase spam scores due to perceived unprofessionalism and potential rendering issues. Focus on clean code and optimized images.
Email marketer from Litmus suggests focusing on a good user experience as large emails can cause rendering problems in some email clients. These issues don't directly trigger spam traps, but can lead to recipients marking emails as spam due to poor experience.
Email marketer from MailerCheck explains that keeping your email size down is crucial for ensuring faster loading times and a better user experience. While the size itself might not trigger spam traps, a poor user experience can increase the likelihood of users marking your emails as spam.
Email marketer from Email Marketing Forum advises that complex HTML and large images can inflate email size and potentially increase spam scores. While not directly triggering traps, higher scores can affect deliverability.
Email marketer from Mailjet Blog explains that while email size doesn't directly trigger spam traps, larger emails can impact deliverability. Larger sizes contribute to slower loading times and a poorer user experience, increasing the likelihood of unsubscribes or being marked as spam.
What the experts say2Expert opinions
Expert from Email Geeks explains that spam trap hits are determined by the destination address, not the content or size of the email.
Expert from Word to the Wise, Laura Atkins, explains that while email size doesn't directly hit spam traps, excessively large emails with badly coded HTML can contribute to deliverability issues, making them more likely to be filtered or have rendering problems. Proper email coding is key.
What the documentation says4Technical articles
Documentation from RFC Editor specifies that SMTP standards do not impose a hard limit on email size, but practical considerations by servers often lead to size restrictions. Exceeding these limits may result in rejection, though it doesn't directly trigger spam traps.
Documentation from Microsoft Support states that Exchange Online has message size limits that can be configured by administrators. Reaching those limits will cause the message to bounce, but does not directly cause spam traps.
Documentation from IETF specifies that there are no size restrictions on message bodies in the RFC, however, practical limitations are imposed by the receiving mail systems. Reaching those limits will cause the message to bounce and/or not send correctly, but does not directly cause spam traps.
Documentation from Google Workspace Admin Help indicates that Gmail has a message size limit of 25 MB, including attachments. Exceeding this limit will prevent the email from being sent, but doesn't directly interact with spam traps.