How does email code quality and size impact email deliverability?

Email marketer from HubSpot shares that poorly coded emails may not display correctly on all devices and can trigger spam filters. Ensure your code is well-structured and follows email coding best practices.

Email marketer from Email Geeks shares that things like missing alt tags can affect deliverability, and HTML errors can affect deliverability. Suggests using a tool like GlockApps to check for errors.

Email marketer from Reddit shares that bloated HTML can lead to rendering issues and negatively impact deliverability, especially on mobile devices.

Email marketer from Campaign Monitor shares that using inline CSS, avoiding excessive use of images, and keeping your code clean can help ensure your email renders properly across different email clients and reduces the risk of being flagged as spam.

Email marketer from GMass states that the cleaner the HTML code, the easier time spam filters will have understanding what the email is about.

Email marketer from Email on Acid shares that HTML errors can increase your spam score which can lower deliverability rates. Email on Acid helps you catch HTML errors.

Email marketer from Reddit explains that emails not rendering correctly will cause a user to mark as spam which will hurt deliverability.

Email marketer from Sendinblue answers that bloated code can increase the likelihood of emails landing in the spam folder. Keeping the code lean and efficient helps improve deliverability.

Email marketer from Email Geeks shares that Gmail truncates emails heavier than 102kb.

Email marketer from ActiveCampaign shares that clean, well-structured code leads to better rendering across devices and email clients, reducing the chances of your email being marked as spam.

Email marketer from Mailjet shares that keeping your HTML as concise as possible is good practice, as excessively long emails can be truncated or flagged as spam. Remove unnecessary code and keep below 100kb.

Email marketer from StackOverflow shares that the best way to code emails is to use tables, inline CSS and test across different platforms.

Expert from Spamresource explains that if your email campaign is flagged as spam too frequently, it will damage your domain and your server. The more you damage these, the less likely people will be to receive your emails.

Expert from Word to the Wise explains that one large image in your email requires a receiver to download a large file. If their spam filter blocks images, they may not see the rest of your content and be more likely to mark you as spam.

Expert from Email Geeks explains that it's not the heavier code that's the problem, but that spammers might also be using the code, and the code might be seen more often in spam than not spam, so it might contribute to a filter making the decision this mail is more likely to be spam.

Expert from Word to the Wise answers that messy code, too many images, or poor coding practices make your email look unprofessional. Make sure to have someone test your code to improve the email code quality.

Documentation from Google Workspace Admin Help explains that Gmail truncates messages larger than 102 KB. It is recommended to clip larger messages.

Documentation from Microsoft Support explains that there are limitations to the maximum email size and attachments supported by Outlook, exceeding this limit will cause sending or receiving errors. Check the official documentation for the latest maximums.

Documentation from the Internet Engineering Task Force explains the standard format of Internet messages which dictates the structure and encoding of email content, including headers and body. The key is to adhere to these specifications to ensure proper parsing by email servers and clients, reducing the likelihood of misinterpretation or being marked as spam.

Documentation from Litmus explains that large email sizes can lead to clipping in Gmail and other email clients, impacting the user experience and potentially deliverability.