---
title: Introduction
description: Step-by-step guides for DNS, deliverability, sending, and troubleshooting.
---
> For the complete documentation index, see [llms-docs.txt](/llms-docs.txt) or the site index [llms.txt](/llms.txt). Full docs corpus: [llms-full-docs.txt](/llms-full-docs.txt). Prefer markdown URLs (append `.md`) for agent consumption. Product skill: [skill.md](/skill.md).


Practical guides for Reloop — domains, DNS setup by provider, deliverability, sending, troubleshooting, and more.

## Domains & DNS

Domain connection docs now live under **[Connect a domain](/docs/guides/connect-domain)** (foundations, Auto-populate, every provider guide, verification, troubleshooting).

- **[Connect a domain](/docs/guides/connect-domain)** — start here
- **[Provider guides](/docs/guides/connect-domain/providers)** — Cloudflare, Vercel, GoDaddy, Route 53, NameSilo, and more
- [Avoid MX Conflicts](/docs/guides/connect-domain/troubleshoot/mx-conflicts)
- [Domain not verifying](/docs/guides/connect-domain/troubleshoot/not-verifying)

## Deliverability

- [Managing the Suppression List](/docs/guides/suppression-list)
- [Receiving Emails](/docs/guides/receiving-emails)
- [Subdomain vs Root Domain](/docs/guides/subdomain-vs-root)
- [Delivered Email Not Arriving](/docs/guides/delivered-not-arriving)
- [Emails Going to Spam](/docs/guides/emails-going-to-spam)
- [Sending to Apple Private Relay](/docs/guides/apple-private-relay)
- [Open Rates Not Accurate](/docs/guides/open-rates-accuracy)
- [Audience Hygiene](/docs/guides/audience-hygiene)
- [Warm-up Guide](/docs/guides/warmup-guide)
- [What is Email Consent?](/docs/guides/email-consent)
- [DKIM Key Length](/docs/guides/dkim-key-length)

## Sending

- [Account Quotas and Limits](/docs/guides/account-quotas-limits)
- [What Sending Feature to Use?](/docs/guides/sending-feature-guide)
- [Why Use Topics?](/docs/guides/why-use-topics)
- [When to Add an Unsubscribe Link](/docs/guides/unsubscribe-link)
- [How Do Dedicated IPs Work?](/docs/guides/dedicated-ips)
- [Creating an Email Address](/docs/guides/creating-email-address)
- [Turn Off Message Storage](/docs/guides/turn-off-message-storage)
- [Unsupported Attachment Types](/docs/guides/unsupported-attachments)

## Tutorials

- [Supabase Quickstart](/docs/guides/supabase-quickstart)
- [Supabase Go-Live Checklist](/docs/guides/supabase-deliverability)
- [Set Up Your Logo on Apple Mail](/docs/guides/apple-branded-mail)
- [Send with an Avatar](/docs/guides/send-with-avatar)
- [Inbound: Forward Emails](/docs/guides/inbound-forward-emails)

## Troubleshooting

- [Error 1010](/docs/guides/error-1010)
- [Domain Mismatch](/docs/guides/error-domain-mismatch)
- [reloop.sh Domain Error](/docs/guides/error-reloop-dev-domain)
- [Domain Already Registered](/docs/guides/domain-already-registered)
- [Avoid Gmail's Spam Folder](/docs/guides/avoid-gmail-spam)
- [Avoid Outlook's Spam Folder](/docs/guides/avoid-outlook-spam)
- [CORS Issues](/docs/guides/fix-cors-issues)

## Automation Tools

- [n8n Integration](/docs/guides/n8n-integration)

## Account Management

- [Change Your Email Address](/docs/guides/change-email-address)
- [Delete Your Account](/docs/guides/delete-account)
- [Production Approval](/docs/guides/production-approval)
- [Pricing](/docs/guides/pricing)
- [Configuring TLS](/docs/guides/configuring-tls)
- [Handling API Keys](/docs/guides/handling-api-keys)
- [Multi-Tenant Setup](/docs/guides/multi-tenant-setup)
- [Downloading Documents](/docs/guides/downloading-documents)

## Testing

- [E2E Testing with Playwright](/docs/guides/e2e-testing-playwright)
- [Email Addresses for Testing](/docs/guides/testing-email-addresses)