---
title: Knowledge base
description: 'Guides for using FormReceipt, email authentication (SPF, DKIM, DMARC), and common DNS troubleshooting.'
canonical: 'https://formreceipt.com/docs'
lang: en
---
> **Canonical:** https://formreceipt.com/docs

Knowledge base

# Help articles & deliverability guides

Step-by-step product help plus SPF, DKIM, DMARC, and platform DNS notes—all links use full https URLs in articles.

Search articles

## Browse by topic

[

Email deliverability

6 articles

→](/docs/email-deliverability)

*   [DKIM signing explained](/docs/email-deliverability/dkim-explained)
*   [DMARC explained](/docs/email-deliverability/dmarc-explained)
*   [Google Workspace: SPF and DKIM](/docs/email-deliverability/google-workspace-spf-dkim)
*   [Microsoft 365: enable DKIM](/docs/email-deliverability/microsoft-365-dkim)
*   [Using SPF, DKIM, and DMARC together](/docs/email-deliverability/spf-dkim-dmarc-together)

[

Product

5 articles

→](/docs/product)

*   [FormReceipt changelog](/docs/product/changelog)
*   [Email verification and login](/docs/product/email-verification-and-login)
*   [Getting started with FormReceipt](/docs/product/getting-started)
*   [Sites and forms](/docs/product/managing-forms)
*   [Scheduling and timing](/docs/product/scheduling-and-timing)

[

Troubleshooting

8 articles

→](/docs/troubleshooting)

*   [Allowlisting FormReceipt automation](/docs/troubleshooting/allowlisting-formreceipt-automation)
*   [Publishing DNS records in Cloudflare](/docs/troubleshooting/cloudflare-dns-records)
*   [DNS propagation and TTL](/docs/troubleshooting/dns-propagation-waits)
*   [Mail arrives in spam despite passing authentication](/docs/troubleshooting/email-messages-in-spam)
*   [Multiple SPF TXT records](/docs/troubleshooting/multiple-spf-records)

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