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

# How do I avoid Outlook's spam folder?

> Learn how to improve inbox placement in Outlook.

<Note>
  This guide is adapted from Microsoft's article to [Improve your spam
  reputation](https://support.microsoft.com/en-us/office/sender-support-in-outlook-com-05875e8d-1950-4d89-a5c3-adc355d0d652).
  For high-volume senders (5,000+ messages per day), see [Microsoft's bulk
  sending requirements for
  2025](https://resend.com/blog/microsoft-bulk-sending-requirements-2025).
</Note>

* **Set up email authentication**. Configure [SPF, DKIM, and DMARC](/dashboard/domains/introduction) for your domain. This is required for bulk senders (5,000+ messages per day) and strongly recommended for all senders.

* **Add your sender name**. Set your `from` like this: `"Name <name.domain.com>"`.

* **Engage with your own email**. Send an email to yourself, open it, and reply to it.

* **Add yourself as a contact**. See how to add contacts in [Outlook.com](https://support.microsoft.com/en-us/office/create-view-and-edit-contacts-and-contact-lists-in-outlook-com-5b909158-036e-4820-92f7-2a27f57b9f01).

* **Ask your recipients to add you in their contacts**. This can be done in [Outlook](https://support.microsoft.com/en-us/office/add-recipients-of-my-email-messages-to-the-safe-senders-list-be1baea0-beab-4a30-b968-9004332336ce) or [outlook.com](https://support.microsoft.com/en-us/office/safe-senders-in-outlook-com-470d4ee6-e3b6-402b-8cd9-a6f00eda7339).

* **Don't blast to a BCC list**. Send separate emails if you are sending to a large number of recipients.

* **Prevent over sending**. Limits are impacted by historical engagements and sending volumes, but you should be hesitant to send too many emails at once. If you think this is an issue, reduce the frequency or volume.

* **Send to engaged recipients**. Don't keep sending if there is no engagement from your recipients. This is especially true if a recipient has requested to unsubscribe or an address is bouncing. Keep spam complaint rates under 0.3%.

* **Include an unsubscribe option**. For bulk emails, include a clearly visible unsubscribe link. Consider implementing [one-click unsubscribe](/dashboard/emails/add-unsubscribe-to-transactional-emails) for the best user experience.

* **Limit use of HTML**. Keep emails as close to plain text as possible.