--- title: "Warmforge Mailbox Warm-Up: Stats, Settings and Warmup Codes" description: "How to read your warm-up stats, run health checks, change warm-up settings and find your warmup codes (for all mailboxes or one) in Warmforge." url: https://help.salesforge.ai/en/articles/10016976-warmforge-mailbox-warm-up-stats-settings-and-warmup-codes collection: "Warmforge" updated: 2026-11-11 language: en --- # Warmforge Mailbox Warm-Up: Stats, Settings and Warmup Codes How to read your warm-up stats, run health checks, change warm-up settings and find your warmup codes (for all mailboxes or one) in Warmforge. Mailbox warm-up runs in **Warmforge**, not in Salesforge. Every mailbox you connect to Salesforge is connected to Warmforge too, whatever its provider. You can also connect mailboxes directly to Warmforge: in that case it supports Mailforge, Infraforge, Google Workspace and Microsoft 365 mailboxes. Warmforge is where you check warm-up stats, run health checks, change warm-up settings and get your warmup codes. To learn why warm-up moved, read [Why we moved warmups from Salesforge to Warmforge](https://help.salesforge.ai/en/articles/10333566.md). Warm-up emails are separate from your campaigns. They do not count toward the emails your sequences send. ### Your mailboxes in Warmforge Open **Mailboxes & Warming** in Warmforge. At the top you see how many mailboxes you have in total, how many are **Warm** and how many are in **Error**. The table lists each mailbox with its **Heat score**, today's warm-up results (Reached Inbox, Replied, Unspammed, Failed) and its SPF and DKIM status. Use the search box to find a mailbox, **Reconnect all** to reconnect mailboxes, and **Select all** to select every mailbox. The top right has the **Warmup codes** and **Add mailbox** buttons. ![Warmforge Mailboxes & Warming page with mailbox counters, heat scores, today's warm-up results and the Warmup codes and Add mailbox buttons](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/jj8DMJOB1ALH8aiYJ8v8PxTAht53nKdBeJudeFlt4rQEUbu8IbPQG1fN6pRe8lkIf8FvlquhI1e.png) ### Check a mailbox's warm-up stats 1. In Warmforge, go to **Mailboxes & Warming**. 2. Click the mailbox you want to check. 3. Stay on the **Warm-up** tab. The top card shows your Heat score and whether the mailbox passes the health checks and has warmed up for 14 days. You need a Heat score of at least 85 before you send campaigns. See [Understanding the Warmforge Heat Score](https://help.salesforge.ai/en/articles/10333666-understanding-the-warmforge-heat-score.md) for what affects it. Below it, the **Sent warmup emails** chart shows each day's warm-up emails by result: **Reached Inbox**, **Replied**, **Unspammed** (found in spam and moved to the inbox) and **Failed**. The mailbox's warmup code is shown at the bottom. To stop warm-up for this mailbox, click **Pause warmup**. We recommend keeping warm-up running all the time. ![Mailbox window on the Warm-up tab with the Heat score, the sent warmup emails chart and the warmup code](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/LHCa6py0stafqFxQZ5fQaf6e71RnWz4Jw4JrW7lGFffHf34U1tvbhUWSNaXCZ0U2VmDM1bpibQj.png) ### Run health checks Open the **Health checks** tab to see the mailbox's domain, when it was last checked, and the result of each check: days of warming passed, SPF, DKIM, DMARC, MX and the backlist check for the domain and server IP. Click a check to see its details. ![Health checks tab listing warming days, SPF, DKIM, DMARC, MX and backlist checks](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/u3JiKMKA6B5a1IHGFa4yhnm04bi1eieIVLvpNaL2IgQjnQEOhhJK8WM8993iKYrHhOrIF4HEGze.png) ### Change warm-up settings Open the **Settings** tab to edit the sender's first and last name and the warm-up volume: - **Min warm-up emails per day** and **Max warm-up emails per day**: Warmforge mimics real human behaviour, so a different amount is sent every day within this range. - **Warm-up email ramp up** and **Warm-up reply rate %**. The settings start on the recommended numbers. We recommend you do not exceed 20 warm-up emails per day and a 30% reply rate, and that you warm up for more than 14 days. Click **Save changes & Close** to apply your changes. ![Settings tab with first name, last name and warm-up volume fields and the recommended limits](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/OjVt3cm4gDAswW7N8JGthwTpBC0ObUFeEHB43F3thAEjidqv97CSbOKN1vCgXRUyJ5bnzFd1RJD.png) ### Add a signature Open the **Signature** tab, write the signature in the editor and click **Save changes & Close**. A good signature has the sender's full name, job title, company name and, optionally, website, address and phone number. ![Signature tab with the signature editor](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/SyJd8Wb8c3Gj6DtO95tW9iZFSozSs7znwy89KYWis3Jw8iXewvh37xL5fetwvKnemiugGkmRfO1.png) ### Find your warmup codes Warmup codes are unique codes that appear in the body of warm-up emails. Use them to build a filter or rule in your inbox so warm-up emails skip your primary inbox. You can get the codes for all your mailboxes at once, or the code of a single mailbox. #### Codes for all mailboxes at once 1. In Warmforge, go to **Mailboxes & Warming**. 2. Click **Warmup codes** at the top right. ![Warmup codes and Add mailbox buttons at the top right of Warmforge](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/MtjjpmO2MY4UJ08AT3AMUinqeZv8CjkgD3fFcmjjIi6w3W9KVWNWibiGoE6ycBhRyrV3kvVK7LX.png) 3. The **Warmup codes generated!** window opens and shows how many codes were generated. 4. Choose a format in the dropdown: **OR (Google, Outlook)** puts OR between the codes, and **Comma** separates them with commas. 5. Click **Copy all to clipboard**. ![Warmup codes generated window with the number of codes, the list of codes and Copy all to clipboard](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/oOk0BEFn2sWxnqbXUO2SsO2punY3DujzBjtBSpuT8zI3EPavjmdj8U9te3ImkJY4o2pWMWIRYuF.png) ![Format dropdown in the Warmup codes window with Comma and OR (Google, Outlook)](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/RppruZ5SaUoUnJItrifJRyAF4nBDBPpGsCbQPHP2YPa9AmM60NuPImUoP8ywxCeTAlIA2OIv7Gu.png) #### Code for one mailbox 1. In Warmforge, go to **Mailboxes & Warming** and click the mailbox. 2. On the **Warm-up** tab, find **Warmup code** below the chart. 3. Select the code and copy it. ![Mailbox window with the warmup code selected below the chart](https://staticfiles.gleap.io/p677a7ec3b682e732d0e54ed0/hTzPy9cVpp2PezNHe0rhL56ruMmJbB5J4P3V25EVUUfC5zA2wD4Ze8rYhTye0yrLTi2IPStqDUJ.png) #### Use the codes in a filter Paste the codes into a filter in your inbox, then choose what happens to matching emails, for example apply a label or skip the inbox. For the full steps in Gmail, see [How to create filters in Gmail for Warmforge warmup emails](https://help.salesforge.ai/en/articles/10179896-how-to-create-filters-in-gmail-for-warmforge-warmup-emails.md). ### Sending limits are set in Salesforge The warm-up settings above only control warm-up emails. The number of campaign emails a mailbox sends per day is set in Salesforge. See [How to change sending limits in Salesforge](https://help.salesforge.ai/en/articles/10333630-how-to-change-sending-limits-in-salesforge.md). For safe daily volumes and the recommended timeline, see [Cold email warm-up best practices](https://help.salesforge.ai/en/articles/10333596-cold-email-warm-up-best-practices-daily-limits-ramp-ups-and-why-warmforge-matters.md). If a mailbox shows an error or was suspended, see [Why Warmforge suspends mailboxes](https://help.salesforge.ai/en/articles/10333647-why-warmforge-suspends-mailboxes.md).