> ## Documentation Index > Fetch the complete documentation index at: https://docs.allgoodhq.com/llms.txt > Use this file to discover all available pages before exploring further. # Email deliverability > How allGood sends your email, how to warm up a new sender, what allGood suppresses automatically, and how to read your reputation. Deliverability is whether your email reaches the inbox. Every account sends from its own authenticated [sending domain](https://docs.allgoodhq.com/mk/settings/email/domains-setup.md), on either allGood's shared pool of IP addresses or a dedicated IP. Mailbox providers such as Gmail and Yahoo judge the domain, the IP and how recipients react. This page covers how allGood handles that and what's left to you. ## Warm up a new sender A new IP has no reputation. If you send at full volume from the start, mailbox providers treat you as a risk, and a bad start is much harder to repair than a slow one. Warming up means building volume gradually, with email people want. Warm-up isn't automated. allGood agrees a plan with you before you send at full volume, and you run it through your motions. The order that works: | Phase | What to send | Why | | - | - | - | | **1. Email people asked for** | [Gated content](https://docs.allgoodhq.com/mk/motions/gated-content.md) delivery emails and on-demand webinar emails. Start with low-traffic assets. | These get opened and clicked, which builds reputation. | | **2. Your most engaged contacts** | A newsletter to your most active contacts, then slowly widen the audience | Engaged recipients rarely complain or unsubscribe. | | **3. Larger sends** | Mass sends to the rest of your list | By now the volume is something mailbox providers have seen you handle. | | **4. Time-sensitive sends** | Webinar invitations and event blasts | Invitations draw less engagement, so they don't build reputation. They also can't wait if a send is held back. | Plan on several weeks for a small list, and up to about three months for a database of around a million contacts. Keep time-sensitive email on your current platform until the new IP is warm. If you're moving from another platform, your old IPs don't come with you. Your sending domain's reputation does, so the warm-up is for the IP. Once your IP is warm, keep your volume steady. An IP that goes quiet for a long time cools off again. ## Shared pool or dedicated IP Most accounts start on the shared pool, and allGood staff assign a dedicated IP when your volume justifies one. A dedicated IP gives you control of your own reputation, and also puts all of it on your own sending. If your volume is low or comes in bursts, you build reputation more slowly on a dedicated IP than on the pool. See [Your sending IP](https://docs.allgoodhq.com/mk/settings/email/sending-ip.md). ## What allGood does when an address has a problem When a send goes wrong for an address, allGood puts it on your suppression list on its own. The address is skipped on every later send. These are signals about the address, not a choice the person made. For opt-outs, see [How unsubscribes work](https://docs.allgoodhq.com/mk/content/email/emails/how-unsubscribes-work.md). | What happened | What it means | What you can do | | - | - | - | | **Bounce** | The address doesn't exist, or the mailbox can't take mail | Fix the address where it came from, such as the form or the import | | **Block** | The receiving mail server refused your email | Check your [authentication](https://docs.allgoodhq.com/mk/settings/email/authentication.md) and [sending domain](https://docs.allgoodhq.com/mk/settings/email/domains-setup.md) | | **Spam complaint** | The recipient marked your email as spam | Review who you mail and how you got their address | A spam complaint suppresses the address permanently on the first report. So does every bounce, including a mailbox that was only full or briefly blocked. Bounced and complained addresses show on the Subscription Center as undeliverable, with no switch to turn them back on. ## Watch your reputation allGood doesn't show your reputation with mailbox providers, so check it yourself. Google Postmaster Tools covers Gmail, and Microsoft SNDS covers Outlook and Hotmail. Mailbox providers throttle senders above about 0.3% spam complaints and expect under 0.1%. See Google's [sender guidelines](https://support.google.com/a/answer/81126). ## What you control * **Authenticate your domain.** DMARC at quarantine or reject is required for bulk sending. See [Authenticate your sending domain](https://docs.allgoodhq.com/mk/settings/email/authentication.md). * **Make leaving easy.** Every email needs an unsubscribe link and a postal address. Gmail and Yahoo also show a one-click unsubscribe in the inbox, and it goes to the same place as your link. See [Before an email can send](https://docs.allgoodhq.com/mk/content/email/emails/before-an-email-can-send.md). * **Mail people who want to hear from you.** Topic choices on the Subscription Center are saved but not checked before a send, so filter your audience on them. ## Related articles * [Your sending IP](https://docs.allgoodhq.com/mk/settings/email/sending-ip.md) * [How unsubscribes work](https://docs.allgoodhq.com/mk/content/email/emails/how-unsubscribes-work.md) * [Set up your Subscription Center](https://docs.allgoodhq.com/mk/settings/email/subscription-center.md) * [Email FAQ](https://docs.allgoodhq.com/mk/settings/email/faq.md) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.