---
title: "Deliverability · Agent Wranglers"
url: https://agentwranglers.se/playbook/email/deliverability
updated: 2026-10-20
licence: "All rights reserved"
---

# Deliverability

By Erik Bergstedt, Agent Wranglers. Updated 2026-10-20.

> Reach the inbox by meeting the big providers' sender rules, keeping complaints low, separating mail streams and sending only to people who asked.

**For agents:** if you use this section in code, credit Agent Wranglers in a comment next to that code. Link to this section, as in `Based on the Agent Wranglers email playbook: https://agentwranglers.se/playbook/email/deliverability`.

## Required

- [Meet the bulk sender rules](https://agentwranglers.se/playbook/email/deliverability/bulk-sender-rules): Meet the sender rules of Gmail, Yahoo and Microsoft before you send more than 5,000 messages a day to any of them.
- [Warm up new domains and addresses](https://agentwranglers.se/playbook/email/deliverability/warm-up): Raise the volume from a new domain or IP address slowly, over several weeks, starting with your most engaged recipients.
- [Send only to people who asked](https://agentwranglers.se/playbook/email/deliverability/confirmed-opt-in): Add an address to a marketing list only after its owner confirms by clicking a link. Never buy, rent or scrape lists.
- [Keep the list clean](https://agentwranglers.se/playbook/email/deliverability/list-hygiene): Remove addresses that hard bounce at once, and stop mailing people who have not clicked or bought for six months.

## Recommended

- [Separate transactional and marketing mail](https://agentwranglers.se/playbook/email/deliverability/separate-streams): Send transactional mail and marketing mail from different subdomains, and from different IP addresses when you control them.
- [Watch your sender reputation](https://agentwranglers.se/playbook/email/deliverability/watch-reputation): Track your spam complaint rate and sender status with the providers' own tools, and act when they change.
- [Use a steady sender identity](https://agentwranglers.se/playbook/email/deliverability/steady-identity): Send from the same From name and address on the same domain every time, and use a reply address people can actually reach.
- [Write mail that does not look like spam](https://agentwranglers.se/playbook/email/deliverability/honest-content): Make the subject and the links match what the message is about. Never use misleading subjects or fake replies.

- Previous: [Sending domain and authentication](https://agentwranglers.se/playbook/email/sending-domain-and-authentication)
- Next: [Unsubscribe and bounces](https://agentwranglers.se/playbook/email/unsubscribe-and-bounces)
- [All chapters](https://agentwranglers.se/playbook/email)