Why Do Emails Land in Spam and How to Prevent It?

When an email you carefully prepared lands in the spam folder, your effort is lost unseen. Deliverability, that is, how successfully your emails reach the inbox, is the most critical topic in email marketing. In this article we explain why emails land in spam and what you can do to get them into the inbox.

Why do emails land in spam?

Mail providers (Gmail, Outlook and others) evaluate every email against a set of signals. The factors below make your email look suspicious:

• Misleading subject line: Subjects that do not match the content, are exaggerated, or trigger spam associations like "free" or "hurry".
• Unbalanced content: Emails made only of a single large image or only of links, with little text.
• High complaint rate: Many people marking the email as "spam".
• Dirty list: Sending to invalid, faulty or long inactive addresses.
• Sudden send spikes: Large numbers of emails in a short time that push daily limits.
• No way to unsubscribe: A user who cannot leave marks the email as spam.

What to do to avoid spam

The good news: deliverability is largely under your control. The following steps significantly increase the chance of your email reaching the inbox:

• Use an honest subject line. Keep the subject consistent with the content; make it intriguing but not exaggerated.
• Keep the text-to-image balance. Instead of emails made only of images, use content supported by readable text.
• Add an unsubscribe link. Letting those who want to leave do so easily lowers the complaint rate. Ulakhane adds this to every email automatically.
• Keep your list clean. Remove bounced and invalid addresses.
• Keep the send rate reasonable. Do not push daily limits; spread large lists across days. For details, see our Gmail daily send limit article.
• Send to relevant people. An audience genuinely interested in your email opens more and complains less.

The advantage of sending from your own Gmail

An important part of deliverability is sender reputation. Sending your emails from your own Gmail account, from a real address the recipient recognizes, rather than from an unfamiliar infrastructure, builds trust. That is exactly what Ulakhane does: it sends your emails from your own Gmail account, so the sender identity stays familiar and consistent. You can see how it works in our guide to sending bulk email with Gmail.

A short checklist before you send

• Is the subject line consistent with the content?
• Does the email have enough text and a clear purpose?
• Is an unsubscribe link included?
• Has the list been cleaned of invalid addresses?
• Is the send within the daily limit?

The next step after improving deliverability is to raise your open rates. For that, take a look at our how to increase email open rates article.

Conclusion: Emails landing in spam is not destiny. With honest content, a clean list, a reasonable send rate and a familiar Gmail address, you largely determine yourself the chance of your emails reaching the inbox.