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

# Protect your deliverability

> Signatures, sending limits, warm-up and suppression — the settings that decide whether your email arrives at all.

<Note>
  Video walkthrough coming soon.
</Note>

The best written campaign in the world is worth nothing in a spam folder. These
are the settings that decide whether your email arrives, and they are worth
getting right before you send at volume rather than after.

## Send from a separate domain

**Settings** → **Domains**.

If you are sending cold outreach, do not send it from the domain your company
runs its real email on. A deliverability problem on a cold domain should never
be able to touch invoices, contracts and support.

Bring a domain you own and Leadey sets up the DNS records that authorise it to
send. Give it a few days before you start, and warm it gradually.

## Add a real signature

**Settings** → **Signature**.

A real signature with your name, company and a physical address is both a
trust signal to filters and, in most jurisdictions, a legal requirement for
commercial email. Every outbound email carries it.

## Set sending limits

**Settings** → **Sending Limits**.

This is the single most important page here.

* **A daily cap per mailbox.** A new mailbox sending 300 emails on its first day
  looks exactly like a compromised one.
* **A sending window.** Real people send during working hours.
* **Warm-up.** Leadey ramps a new mailbox up gradually instead of starting at
  full volume.

Leadey drips sends across the window rather than firing everything at once, and
distributes across your connected mailboxes rather than exhausting one.

<Note>
  Sending limits are a workspace budget, not a per-campaign one. Three campaigns
  running at once share the same daily allowance, so turning on a fourth does
  not quadruple your volume — it divides what exists.
</Note>

## Honour opt-outs automatically

**Settings** → **Suppression List**.

Unsubscribes, replies asking to stop, and hard bounces all land here, and every
send checks it. One person's opt-out is enforced across every campaign in the
workspace, so a colleague cannot email them by accident from somewhere else.

You can add addresses and whole domains by hand — useful for a customer you must
never cold-email, or a competitor.

## Watch the right numbers

Reply rate is the metric that matters. Open rates have become unreliable — mail
providers pre-fetch images, which registers as an open nobody performed.

A reply rate that falls while your copy has not changed is usually a
deliverability problem, not a messaging one. Check:

1. Bounce rate — climbing means list quality
2. Whether recent sends landed in spam, by testing to your own addresses
3. Whether you raised volume recently

## A sane starting point

* One dedicated sending domain, warmed for a week before real volume
* Two or three mailboxes on it rather than one
* 30-50 emails per mailbox per day to start, raised weekly
* A sending window matching your buyers' working hours
* Exit conditions on every workflow, so nobody who replied gets chased

<Card title="Part 7 — Automate with workflows" href="/tutorials/07-workflows" horizontal>
  Where sending limits and exit conditions actually apply.
</Card>