> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mailofly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Emails Going to Spam

> Why your emails might land in spam folders and how to optimize your inbox placement.

# Emails Going to Spam

Having your emails delivered to the Spam or Junk folder is typically caused by reputation factors, missing DNS records, or message content triggers.

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## 1. Verify Authentication (SPF, DKIM, DMARC)

Ensure your domain passes all three core authentication checks:

* **SPF**: Confirms Mailofly's IP addresses are authorized to send for your domain.
* **DKIM**: Verifies cryptographic integrity of the message body and headers.
* **DMARC**: Aligns the `From` domain with SPF and DKIM.

Run a check in **[Domains](https://www.mailofly.com/user/domains)** to ensure all records show a green **Verified** status.

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## 2. Check Spam Rate (\< 0.3%)

Google and Yahoo enforce a strict **0.30% maximum spam complaint rate**. If more than 3 out of every 1,000 recipients flag your emails as spam, inbox placement will drop immediately.

* Use double opt-in where possible.
* Include a prominent, one-click unsubscribe link.

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## 3. Sender Warmup

Brand-new domains or domains suddenly sending thousands of emails trigger anti-abuse heuristics. Gradually ramp up sending volume according to our [Warm-up Guide](/guides/deliverability/warm-up-guide).

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## 4. Content and Link Quality

* **Avoid URL Shorteners**: Do not use `bit.ly` or generic redirectors; spam filters automatically flag them.
* **Text-to-Image Ratio**: Do not send emails that consist entirely of a single image. Include well-structured HTML text.
* **Consistent From Address**: Use a recognizable sender name and matching domain.


## Related topics

- [Avoid Gmail's Spam Folder](/guides/deliverability/avoid-gmail-spam.md)
- [Avoid Outlook's Spam Folder](/guides/deliverability/avoid-outlook-spam.md)
- [Avoid Yahoo's Spam Folder](/guides/deliverability/avoid-yahoo-spam.md)
- [Avoid iCloud's Spam Folder](/guides/deliverability/avoid-icloud-spam.md)
- [What is email consent?](/guides/deliverability/email-consent.md)