Glossary of Warmerly terms
What the words in the Warmerly app mean. For general email terms (SPF, DKIM, DMARC, sender reputation) there is also the deliverability glossary on warmerly.com. Plan prices and allowance numbers are never listed here: see Plans & limits.
Mailboxes and warmup
Mailbox
An email address Warmerly sends from and reads replies from. You either connect one you already have (Gmail or Google Workspace with an app password, Microsoft 365 or Outlook with one-click sign-in, or any provider over IMAP and SMTP), or Warmerly hosts one for you (OneMail). Mailboxes live under Accounts. See Connecting a mailbox.
Account
On the Accounts page, an "account" is any sending identity: a mailbox, a LinkedIn account or a WhatsApp number. (In the API docs and some code paths a mailbox is called an "email account".)
OneMail
Mailboxes and domains that Warmerly hosts for you, with the DNS and warmup handled. You can buy a new domain, bring one you own, or add mailboxes to a domain you have. A OneMail mailbox is billed per mailbox and never uses your plan's mailbox limit. See OneMail.
Free mailbox (also called the sandbox mailbox)
The mailbox every new account gets at signup, already warming up. It shows a Free gift badge on Accounts, uses no plan slot, and needs no DNS. It can send limited cold email after a warmup period. Inside Warmerly and in some answers you may see it called the "sandbox" or "free trial" mailbox. See How do I get a free sending mailbox?.
Ready-warmed mailbox
A OneMail mailbox that is already warm when you buy it, when available. See OneMail.
Warmup
Background activity that builds a mailbox's sending reputation: your mailbox exchanges ordinary messages with other mailboxes in Warmerly's warmup network, and both sides open and reply. Warmup never emails your prospects. The marketing name for the engine is Warmflow. See How warmup works.
Ramp
Starting small and increasing volume over time. There are two:
- The warmup ramp: a mailbox's daily warmup volume rises gradually toward its limit. When you connect a mailbox you can choose how quickly (Safe, Balanced or Faster in the Android setup).
- The campaign volume ramp: a campaign whose mailboxes have had under 14 days of warmup starts with a small number of emails per mailbox per day and climbs, which makes launching on day one safe. You can turn it off in the campaign's Settings tab.
Daily limit
The most emails a mailbox will send per day. It is shared across every campaign that mailbox sends for. See Troubleshooting.
Health score
A number from 0 to 100 for how likely a mailbox's email is to reach the inbox instead of spam. Statuses you will see next to it: Healthy (sending well), Warming (still building trust), At Risk (warning signs, may need action) and Paused (not sending right now). See Dashboard overview.
Paused, and "campaign sending paused"
These are different. A paused mailbox is stopped for both warmup and campaigns and needs attention (for example it needs reconnecting). A mailbox whose campaign sending is paused because of reputation is out of campaigns only, keeps warming up, and returns by itself when it recovers. See Troubleshooting.
Placement test
A test that sends real probe emails from a mailbox to seed addresses at several providers and reports whether each landed in the inbox, promotions or spam. Run it from Accounts, open the mailbox, then the Health tab and Run new test. Each test uses one of your monthly placement tests.
Tracking domain
Your own web address used for open and click tracking links in campaign emails, instead of Warmerly's. See Custom tracking domain.
Campaigns and leads
Campaign
A sequence of emails sent to a list of leads from the mailboxes you choose, on a schedule. Built under Campaigns > New campaign: Audience, Sequence, Launch. See How do I launch my first campaign?.
Lead
A person you might email, with their address and company details. Leads belong to a campaign. Find them with Find leads, import a CSV, or add them by API.
Sequence and merge tag
The sequence is the series of emails a campaign sends. A merge tag (also called a
variable), such as {{firstName}}, is filled in from each lead's data when the email is sent.
Sender
A mailbox chosen to send a campaign. Emails are spread across the senders you pick.
Suppression list (shown as "Do not contact")
Addresses Warmerly must never email from your workspace: hard bounces, spam complaints, unsubscribes and ones you add. Found at Settings > Do not contact. Campaigns and replies skip these addresses automatically. See Suppression API.
Verification, and Email finder
Email verification (sidebar Prospecting > Email verification) checks whether an address is likely deliverable before you send. Email finder looks up an address for a person or company. Both use monthly allowances.
Website summary and Data library
Website summary turns a web page into short factual research for personalising outreach. The Data library is where results from these tools are saved for reuse and export.
Warmerly Link
The name of the LinkedIn side of Warmerly (sidebar Outreach > Warmerly Link): LinkedIn warmup and outreach. It is sold per connected LinkedIn account. See Plans & limits.
Inbox
Inbox in the sidebar collects replies from every mailbox in one place. Replies are auto-categorised as lead, not relevant or spam.
Workspaces, plans and limits
Workspace
The top-level container for your account: it owns the plan, the billing, the team members and everything inside it. You can belong to several. Managed under Settings > Workspaces and Settings > Team. On the Agency plan, client workspaces share the Agency workspace's allowances. See Workspaces.
Project
A subdivision inside a workspace for a client or brand, with its own mailboxes, campaigns and inbox. If you only run one brand you can ignore projects. See Workspaces.
Slot
A unit you buy on top of your plan for one extra account of a kind: a Warmerly Link slot for each connected LinkedIn account, and a WhatsApp slot for each extra WhatsApp number beyond what your plan includes. A "mailbox slot" is informal for one of the mailboxes your plan lets you connect.
Monthly allowance
A monthly meter that resets on the 1st and does not roll over: verifications, email lookups, LinkedIn lookups, lead exports, placement tests, AI credits and Free's campaign sends.
Capacity limit
A live count with no reset, such as mailboxes, active campaigns and active prospects. Disconnect a mailbox and the slot is free at once.
Credit
The currency for AI actions and for top-ups. Your plan includes a monthly amount of AI credits. You can also buy credit packs, which never expire and are spent after the monthly amount. Credits can buy a block of extra verifications, lookups, lead exports or placement tests when you run out mid-month, and nothing is ever bought automatically. See Settings > Usage & limits.
Grace period and billing lock
If a workspace ends up over its plan, a countdown banner gives it a grace period, during which everything keeps working. A billing lock is the screen that blocks the dashboard when there is no plan, a payment is overdue, or the grace period has ended. Warmup and campaign sending pause while it lasts, and nothing is deleted. See Plans & limits.
Assistants and developers
Warmi
Warmerly's AI support assistant, in the chat button on every page. See Warmi.
Connected app, and MCP
An AI assistant (Claude, ChatGPT, Cursor and others) you have allowed into one workspace through the Model Context Protocol (MCP). Managed under Settings > Connected apps. See Use Warmerly with AI and connected apps.
Platform API key and Sending key
A Platform API key (Settings > Platform API keys) is for the Warmerly API and needs the Agency plan. A Sending key (Transactional email > Sending keys) works only for transactional email. Neither works in place of the other. See Authentication.
Transactional email
Email your own app sends to its users, such as password resets and receipts, through a separate product with its own domains, keys and billing. See Getting started with transactional email.
Webhook
A web address of yours that Warmerly calls when something happens, such as a mailbox health event. Set up under Settings > Webhooks. See Webhooks.
Audit log
A record of recent activity by your team and by connected apps, under Settings > Audit log.