Two different IPs are involved when a sequencer sends from an SMTP mailbox: the connection IP the sequencer uses to log in and submit the message, and the sending IP of the mail server that delivers it to the recipient. Inbox providers judge the sending IP. When your sequencer submits mail through a Winnr mailbox, Winnr's servers deliver it, so Winnr's sending IP is the one that counts. Smartlead sells dedicated servers with a dedicated IP as an add-on (SmartServers, $39 per server per month as of October 2026); before paying for one, ask Smartlead whether it changes which server delivers your mail when your mailboxes are external SMTP accounts. On Winnr, most mailboxes send from shared, managed pools, and a dedicated sending IP is an optional Enterprise add-on at $20 per IP per month.
Two Types of IP in Cold Email
The term "dedicated IP" gets used loosely in cold email. Before paying for one, it helps to know which IP the product actually dedicates to you. There are two distinct IPs involved every time a sequencer sends a cold email from an SMTP mailbox:
- Connection IP (sequencer side): The IP address your sequencer uses to connect to your mailbox over SMTP or IMAP, log in, and submit the message.
- Sending IP (infrastructure side): The IP address of the mail server that delivers the message to the recipient's mail server. This is the IP Gmail, Outlook, Yahoo and other inbox providers evaluate for reputation.
Only one of them is the IP the recipient's server is talking to when it decides inbox or spam: the sending IP.
Step 1: Your sequencer connects to your mailbox's SMTP server with the mailbox credentials → connection IP
Step 2: The mailbox's mail server (Winnr) accepts the message and delivers it to the recipient → sending IP
Step 3: The recipient's inbox provider (Gmail, Outlook) weighs the sending IP reputation, along with domain reputation and content, to decide inbox or spam
What Smartlead Sells as Dedicated IPs
As of October 2026, Smartlead's pricing page lists SmartServers as an add-on at $39 per server per month, with "Dedicated IP for optimal performance" among its features, and its Unlimited Prime plan includes 3 SmartServers. Smartlead's SmartInfra page describes dedicated servers and IP pools for outbound campaigns.
Smartlead also offers different ways to connect a mailbox. Its help center describes a "Your Email Network" option (Smart and Prime plans) that sends through your own OAuth credentials and a default option that relies on Smartlead's infrastructure.
Those products are aimed at Smartlead users generally, many of whom connect Google Workspace or Microsoft 365 mailboxes directly. If your mailboxes are SMTP accounts on Winnr, the question to ask Smartlead before you buy is simple: with my external SMTP mailboxes, does this add-on change which server delivers my mail to recipients, or only the IP Smartlead connects from? The answer decides whether it can affect your deliverability at all.
Which IP Counts When You Send Through Winnr
Here is what happens when a sequencer sends an email from a Winnr mailbox over SMTP:
- The sequencer triggers the send. Your sequence fires, and the sequencer connects to Winnr's SMTP server with the mailbox's username and password, from whatever IP it uses (shared or dedicated).
- Winnr authenticates the connection. Winnr checks the credentials and accepts the message. The sequencer's IP is just the client that logged in.
- Winnr delivers the email. Winnr's mail servers, on Winnr's IP addresses, deliver the message to the recipient's mail server. This is the IP that Gmail, Outlook and Yahoo evaluate.
- The recipient's server decides. Based on the sending IP's reputation, domain reputation (SPF, DKIM, DMARC), content and engagement history, it routes the email to the inbox or spam.
The recipient's mail server makes its decision about the server delivering to it, not the sequencer that submitted the message upstream. A dedicated IP that only changes the sequencer's connection IP does not change step 3.
Think of it this way: the connection IP is like the phone you use to call a courier. The courier (Winnr) picks up the package and delivers it. The person receiving it sees the courier's truck, not your phone. A better phone plan doesn't change the truck.
What a Dedicated Sending IP on Winnr Is
Winnr's dedicated IPs are sending IPs: your mail is delivered from an address used only by your account, so no other sender's behavior can help or hurt its reputation. They are an optional add-on on the Enterprise plan ($189/mo) at $20 per IP per month. There is no self-serve switch: you email support, and the team assigns the IP, moves your sending domains onto it and adds it to your subscription. You don't change anything in your sequencer.
What a dedicated sending IP gives you:
- Isolation: Your IP reputation is built only by your own sending.
- A consistent sender identity: Inbox providers see the same IP for your mail over time.
- Independent monitoring: You can watch that one IP's reputation and blocklist status on your own.
By default, every Winnr mailbox sends from shared IP pools that Winnr runs, monitors and keeps in good standing.
Shared IPs vs Dedicated IPs: Which Should You Use?
The instinct is that dedicated must be better. In cold email it often isn't. A well-run shared pool often beats an under-used dedicated IP.
Why shared pools suit most cold email senders
- Established reputation: Shared pools already have a sending history, so a new sender is not starting an IP from zero. Your mailboxes and domains still need their own warming.
- Active maintenance: Winnr watches blocklists and delivery rates to keep its shared pools in good standing.
- Uneven volume is fine: Cold email volume rises and falls with campaigns. A dedicated IP needs steady volume to build and hold a reputation, and one that sends too little can underperform a shared pool.
When a dedicated IP on Winnr makes sense
- High, consistent daily volume across many mailboxes.
- You want full isolation from other senders.
- You are rebuilding after a damaged reputation and want a clean slate you control.
If your volume moves up and down with campaigns, which is normal for cold email, Winnr's shared pools are usually the better choice. A new dedicated IP has no reputation of its own and needs a gradual ramp and steady volume. Treat a dedicated IP as a tool for specific situations, not an automatic upgrade.
| Factor | Shared IP (Winnr) | Dedicated IP (Winnr) | Sequencer connection IP |
|---|---|---|---|
| What it is | Sending IP in a managed pool | Sending IP used only by you | IP the sequencer logs in from |
| Seen by the recipient's server | Yes | Yes | No, when mail is delivered by Winnr |
| IP warmup | Pool already has history | Needs a gradual ramp | N/A |
| Cost on Winnr | Included | $20/IP/mo (Enterprise) | N/A |
| Best for | Most cold email senders | High, steady volume | Mailboxes the sequencer delivers through itself |
| Main risk | Shared with other senders (managed by Winnr) | Weak reputation if volume is low or uneven | Paying for something that doesn't touch delivery |
Sequencer vs Infrastructure: Who Does What
When your mailboxes live on an SMTP provider, the work splits into two layers.
The sequencer's job is to:
- Run your campaign sequences (follow-ups, timing, personalization)
- Detect replies and stop sequences when prospects respond
- Rotate between mailboxes to spread volume
- Track opens, clicks and replies
The infrastructure provider's job (Winnr) is to:
- Provision mailboxes and domains with SPF, DKIM and DMARC set up
- Deliver email from IPs kept in good standing
- Offer warming to build each mailbox's sending history
- Check DNS health and blocklists on your domains
The sequencer still shapes deliverability through what it sends and how fast: copy, tracking links, daily limits per mailbox (keep it to 10 to 20 cold emails per mailbox per day) and sending windows. But the IP-level part of delivery happens on the infrastructure side. That also means you can use any SMTP-capable sequencer with Winnr: Smartlead, Instantly, EmailBison, Reply.io or a tool you built yourself. Winnr exports mailboxes in each tool's format, for example connecting Winnr mailboxes to Smartlead.
If you are deciding where the mailboxes themselves should live, see how Winnr's SMTP mailboxes for cold email are set up and priced.
Warming Works the Same Either Way
A common follow-up: does a sequencer-side dedicated IP affect warming? Not with Winnr's built-in warming, which runs on the mailbox itself, independent of which sequencer you use.
When you enable warming on a Winnr mailbox ($0.60 per mailbox per month):
- The mailbox exchanges warmup emails, with replies, with a shared warming network of real mailboxes
- Warmup mail is sent through the Winnr mailbox, so it leaves from the same infrastructure as the rest of its mail
- Your sequencer is not involved in warming at all
For how built-in warming compares with sequencer warmup pools and standalone tools, see built-in warming vs sequencer warmup pools vs standalone warmup tools. For more on the difference between the two kinds of reputation, read IP reputation vs domain reputation.
Frequently Asked Questions
Does a sequencer's dedicated IP affect my email deliverability?
Only if it changes the server that delivers your mail to recipients. Inbox providers judge the IP of the server that hands them the message. When your sequencer submits mail through a Winnr mailbox, Winnr's servers deliver it, so a dedicated IP that only changes the sequencer's connection IP does not change what recipients see. Ask your sequencer which of the two its add-on changes for external SMTP mailboxes.
What is the difference between a connection IP and a sending IP?
A connection IP is the IP address your sequencer uses to log into your mailbox over SMTP or IMAP and submit messages. A sending IP is the IP address of the mail server that delivers the email to the recipient's mail server. Inbox providers like Gmail and Outlook evaluate the sending IP. With Winnr as your SMTP provider, that is Winnr's sending IP.
What does Smartlead offer as a dedicated IP?
As of October 2026, Smartlead's pricing page lists SmartServers as an add-on at $39 per server per month, including a dedicated IP, and its Unlimited Prime plan includes 3 SmartServers. If you connect Winnr SMTP mailboxes to Smartlead, ask Smartlead whether the add-on changes which server delivers your mail before buying it for deliverability.
Do I need a dedicated IP with Winnr?
Most senders don't. By default every Winnr mailbox sends from shared pools that Winnr monitors and keeps in good standing. A dedicated IP makes sense at high, steady daily volume or when you want a reputation no one else can affect. It is an Enterprise add-on at $20 per IP per month, set up by the support team on request.
Can I use any sequencer with Winnr?
Yes. Winnr mailboxes work with any sequencer that supports SMTP and IMAP, including Smartlead, Instantly, EmailBison, Reply.io and custom-built tools. The sequencer connects with the mailbox credentials and Winnr delivers the email. Set each mailbox to 10 to 20 cold emails per day in the sequencer.
Is a shared IP on Winnr safe for cold email?
Yes, for most senders. Winnr's shared pools are actively monitored, and Winnr watches blocklists and delivery rates to keep them in good standing. A well-run shared pool often beats an under-used dedicated IP. Your mailboxes and domains still need their own warming and sensible volumes.
What are the downsides of a dedicated IP for cold email?
A new dedicated IP has no reputation of its own, so it needs a gradual ramp. If your volume is low or uneven, which is common in cold email as campaigns start and stop, it may never build a strong signal and can underperform a shared pool. You also carry the full impact of any bad campaign, with no pool around it.
Related: IP reputation vs domain reputation in cold email and SMTP vs Google Workspace and Microsoft 365 for cold email.