# Google email sender guidelines (official source)

> The rules Gmail applies to bulk senders — authentication, unsubscribe, spam rate.

- **Task:** Send email that lands · **Kind:** Portal · **Region:** Global
- **Price:** free (as reviewed 2026-09-05) · **Official source:** https://support.google.com/a/answer/81126
- **Canonical:** https://find.do/t/google-email-sender-guidelines/

## What it is for

Knowing the thresholds (DMARC, one-click unsubscribe, spam complaints under 0.3%) before sending at volume.

Tags: deliverability, Gmail

## Used in these for.do playbooks

- [Run a cold email campaign that gets replies (and stays out of spam)](https://for.do/p/cold-email-outreach/)
- [Launch an email newsletter](https://for.do/p/launch-a-newsletter/)

## Also for “send email that lands”

- [beehiiv](https://find.do/t/beehiiv/) — Newsletter platform built around growth — referrals, recommendations, ad network.
- [Buttondown](https://find.do/t/buttondown/) — A minimal, developer-friendly newsletter tool with Markdown and an API.
- [Instantly](https://find.do/t/instantly/) — Cold-email sending with mailbox warm-up and rotation.
- [Kit (formerly ConvertKit)](https://find.do/t/kit/) — Creator email with automations, landing pages and commerce.
- [MXToolbox](https://find.do/t/mxtoolbox/) — Checks SPF, DKIM, DMARC, MX and blacklists for a domain.
- [NeverBounce](https://find.do/t/neverbounce/) — Email list verification to keep bounces under control.
- [Substack](https://find.do/t/substack/) — Newsletter publishing with a built-in discovery network and paid tiers.