7 Possible Reasons Why Your E-mails Arrive as Spam?

7 Possible Reasons Why Your E-mails Arrive as Spam?

by Mohd Shahrukh August 19, 2021
Why email goes to spam

More than 20% of your e-mails end up in the spam mailbox of your recipients. Far from being trivial, this hampers the return on investment of your e-mailing strategy.

Are you looking for solutions to improve the deliverability rate of your messages? Get closer to the screen; I reveal seven reasons why your e-mails are classified as junk!

1. You use a free domain for your e-mailing campaigns

Gmail, Yahoo, Outlook, or Hotmail are not recommended for your e-mailing campaigns. Why? Because Internet Service Providers (ISPs) reject bulk e-mails from these free domains.

They prefer domain names registered by an individual sender, which they can trace and whose reputation they can assess.

What to do? Use your domain name to create an e-mail address dedicated to your emailings. It should look like: [email protected]

So you can build your reputation as a sender with ISPs. Not to mention that this practice gives a more professional image to your newsletters.

Why email goes to spam | Mohd Shahrukh

2. You have not authenticated your e-mails

One of the main reasons for spam is the lack of proper authentication. It’s like when you decline a call because you don’t recognize the calling number.

There are technologies to authenticate your e-mails and increase your deliverability rate. This practice makes your domain trustworthy in the eyes of spam filters. The main e-mail identification technologies are:

  • DKIM (Domain Key Identified Mail): provides an encryption key and a digital signature to verify your e-mails.
  • SPF (Sender Policy Framework): Checks if the sender’s IP address is trusted.
  • DMARC: you must already be using DKIM and SPF.

If you are using a custom domain name, you can implement these authentication methods by adding TXT records in the DNS management of your domain. If you need help, don’t hesitate to contact my team at found!


3. You use words associated with spam

To protect their users from scams, ISPs have a list of spam trigger words. Here are a few :

  • Cheque or money order
  • Free or toll-free
  • Exceptional offer
  • Guarantee
  • To increase the sales
  • Order now
  • Without risk
  • Special promotion
  • Winner

All-caps texts, exclamation marks, and overuse of emojis, as well as grammar mistakes, are also reasons to end up in the spam box.

Contact your provider for the words that trigger red flags and make it a list of terms to avoid in the subject line.

In general, avoid items that make huge promises or offer great deals. Stay measured and factual in your words.


4. Your e-mails are not HTML compatible

When you send e-mails to friends or family, the content is mostly textual.

As a business, you should include visuals, animations, one or more call-to-action buttons, and other graphics to drive engagement. For this, you need to write your e-mails in HTML.

However, you must follow best practices to prevent the design from becoming an excuse to end up in spam:

  • Use a maximum width of 600 to 800 pixels for your e-mails.
  • Make sure the HTML code is as clear and simple as possible. Avoid JavaScript and Flash languages ​​which many ISPs no longer support.
  • Maintain a low image-to-text ratio.
  • Optimize and lighten your images.
  • Optimize your e-mail for mobile with small images and easily readable fonts.

5. Your e-mails contain too many attachments

Attachments are often used to distribute viruses. Thus, they trigger an alarm with anti-spam filters, in particular “.exe” files.

Your e-mailing campaigns must not contain any attached files. If you need to include any, make the document available on your website or through a cloud storage service like Dropbox or Google Drive.


6. Your e-mails do not contain contact details or unsubscribe link

Physical addresses and unsubscribe buttons help improve the deliverability of your e-mails. In addition, they are essential in the management of your brand image.

At the bottom of the page, remember to indicate the contact details of your head office. The same goes for the unsubscribe link. This should be visible at the top or bottom of your message. If you prevent unsubscribing, subscribers will report you as spam to no longer receive your messages.


7. You send too many e-mails at once

If you usually send e-mails to 10,000 subscribers and suddenly jump to 200,000, you risk triggering ISP spam filters. This spike is considered unexpected behavior or even a malicious attack.

So, if you plan to increase the pace, do so gradually to heat your IP address.


E-mail is a preferred communication channel for Internet users. It is no coincidence that it has an excellent return on investment! However, you must ensure the deliverability of your e-mails by avoiding the seven mistakes above.

You can also contact my team of e-mail consultants at ufound to help you improve your deliverability and avoid spamming.


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