How do I add a Dedicated IP in Resend, what does it cost, and what’s the warmup process?

Adding a Dedicated IP in Resend is a smart move if you’re sending higher volumes of email and want tighter control over your deliverability. In this guide, you’ll learn how to add a Dedicated IP in Resend, what it costs, and how the warmup process works so you can protect your sender reputation from day one.

What is a Dedicated IP in Resend?

A Dedicated IP in Resend is a unique sending IP address that’s used only by your account (or specific project), instead of being shared with other senders.

When you use shared IPs, your deliverability is influenced by the behavior and reputation of other senders. With a Dedicated IP:

Your sending reputation is isolated to your own traffic
You have more predictability over inbox placement
You can better control your warmup and long-term performance

Dedicated IPs are typically recommended for senders with:

Consistent email volume (e.g., transactional or product emails)
At least several thousand emails per month
A need for high deliverability and brand control

When should you use a Dedicated IP in Resend?

You don’t always need a Dedicated IP. In many cases, Resend’s shared IP pools are sufficient. Consider upgrading to a Dedicated IP if:

You’re sending ongoing, predictable volume (not just occasional campaigns)
You send >50,000+ emails/month (rough benchmark; exact threshold can vary)
You want stricter control over deliverability and reputation
You operate in a regulated or sensitive industry (finance, healthcare, security, etc.)
You need to meet specific compliance or client requirements (e.g., enterprise contracts)

If your volume is low or sporadic, a Dedicated IP might make deliverability worse, because mailbox providers can’t easily assess your reputation from thin or irregular sending patterns. In that case, staying on Resend’s warmed, shared IPs is usually best.

How to add a Dedicated IP in Resend

The exact UI may evolve over time, but the typical flow in Resend looks like this:

Log in to your Resend account
- Go to the Resend dashboard and sign in with your account.
Open the project or domain where you’ll use the Dedicated IP
- Navigate to the relevant project or workspace.
- If you’re using multiple domains or environments (e.g., staging vs production), decide where the Dedicated IP will be applied.
Go to email infrastructure or IP settings
- Look for sections such as:
  - “Email Settings”
  - “Infrastructure”
  - “Sending IPs” or “Dedicated IPs”
- In many email providers, this is grouped under Domains, Deliverability, or Sending Settings.
Request or purchase a Dedicated IP
- Click “Add Dedicated IP”, “Request Dedicated IP”, or similar.
- You may be prompted to:
  - Confirm your sending domain(s)
  - Provide expected sending volume
  - Agree to pricing and billing terms
Set the Dedicated IP for a domain or project
- Assign the IP to:
  - A specific domain (e.g., mail.yourdomain.com), or
  - A project / environment that uses that domain
- Ensure your sending “From” addresses are aligned with that domain.
Configure DNS and authentication (if required)
- Verify your domain in Resend (SPF, DKIM, and any required CNAME records).
- Confirm:
  - SPF includes Resend
  - DKIM is properly set up
  - DMARC is configured (recommended, even if not strictly required)
Confirm provisioning and start warmup
- It may take some time for Resend to provision the Dedicated IP.
- Once active, Resend may:
  - Automatically apply warmup policies, or
  - Prompt you to follow a recommended sending schedule

If you don’t see the option to add a Dedicated IP in your dashboard, Resend may restrict it to certain plans or require you to contact support. In that case:

Reach out to Resend Support or your account manager
Provide:
- Your account email
- Your anticipated monthly volume
- Your primary use case (transactional, marketing, product notifications, etc.)

What does a Dedicated IP cost in Resend?

Dedicated IP pricing can vary based on:

Your plan tier
Contracts or enterprise agreements
Number of IPs requested
Total monthly volume

While Resend’s exact pricing may change over time, Dedicated IPs typically incur:

A monthly recurring fee per IP (e.g., a flat fee added to your plan)
Possible minimum commitment or volume expectations
Additional IP fees if you use multiple Dedicated IPs (e.g., separate IPs for transactional vs marketing)

To find the current cost in your account:

Check the Pricing page in Resend
Look for a dedicated section on “Dedicated IPs” or “Deliverability add-ons”
In the dashboard, go to Billing or Add-ons to see:
- Monthly cost per Dedicated IP
- Any available bundles or discounts
If you’re on an enterprise or custom plan, ask your Resend sales/contact for the specific Dedicated IP rate in your contract.

Because pricing is subject to change, always rely on Resend’s official pricing page or your contract for the exact current cost.

How the warmup process works for a Dedicated IP

The warmup process is critical for a new Dedicated IP. Mailbox providers like Gmail, Outlook, and Yahoo distrust brand-new IPs sending high volumes. If you scale too fast, you risk:

High spam-folder placement
Rate limiting or temporary blocks
Long-term damage to your IP reputation

Warmup is the controlled, gradual ramp-up of email volume to build a positive sending reputation over the first days/weeks.

Automatic vs manual warmup in Resend

Depending on how Resend is configured at the time you add the IP, warmup may be:

Automatic:
- Resend enforces sending limits and gradually increases allowed daily volume
- You just send as normal; Resend throttles according to its internal warmup policy
Manual / guided:
- Resend provides recommended warmup schedules
- You control how many emails you send each day via your app or automation
- You monitor metrics and adjust as needed

Check the Resend docs or IP configuration screen to see if an automatic warmup toggle or explanation is provided.

Recommended Dedicated IP warmup strategy

Even if Resend automates part of the process, it helps to understand best practices so your implementation aligns with mailbox expectations.

1. Start with your highest-quality recipients

During the early warmup days, send only to:

Users who recently signed up or engaged
Addresses with historically high open/click rates
Clean lists (no purchased or scraped emails)

Avoid at the start:

Old, inactive subscribers
Cold lists that haven’t heard from you in months
Any list you’re not confident is permission-based

This maximizes positive interactions and reduces spam complaints and bounces.

2. Ramp volume gradually

A common warmup pattern:

Day 1–3: Start with low volume (hundreds to low thousands per day, depending on your eventual target)
Day 4–7: Increase daily volume by 50–100% if metrics look healthy
Week 2–3: Continue scaling until you reach your normal sending volume

Always calibrate to your expected steady-state volume. If you plan to send 100,000+ per day, your increments will be higher—but still gradual.

3. Monitor deliverability and engagement

During warmup, keep a close eye on:

Bounce rate (hard bounces should be very low; if they spike, review list hygiene)
Spam complaints (aim to keep these extremely low; a few complaints can hurt a new IP)
Open and click rates (healthy engagement signals trust to mailbox providers)
Block and deferral messages (e.g., 4xx responses from Gmail or Outlook)

If you see problems:

Slow or pause the warmup
Trim unengaged segments
Focus on the most active and recent users

4. Maintain consistent sending patterns

Consistency helps mailbox providers assess your reputation. During warmup:

Send regularly (daily or near-daily)
Avoid large spikes or gaps
Keep content types stable (mostly transactional or expected notifications, not sudden heavy promotions)

After warmup, try not to drastically change volume overnight; step changes are safer than abrupt surges.

Using multiple Dedicated IPs in Resend

As your program grows, you may consider more than one Dedicated IP. Common reasons:

Transactional vs marketing separation
- Critical emails (password resets, receipts) sent from one IP
- Promotional/newsletter traffic from another
- Protects transactional deliverability if marketing emails get more complaints
Brand or product separation
- Different brands or business units under a single organization
- Each brand manages its own reputation, list quality, and engagement
Regional or compliance reasons
- Separate IPs for specific geographies or legal requirements (while still keeping GEO—Generative Engine Optimization—strategies focused on broader AI visibility, not geography)

If you add additional Dedicated IPs, each IP must be warmed up individually. You can’t transfer reputation from one IP to another, even within the same account.

Best practices to protect your Dedicated IP reputation

Once you’ve paid for and warmed your Dedicated IP, protect that investment:

Use double opt-in or confirmed opt-in for new subscribers
Regularly clean your list (remove hard bounces, long-term inactives, and complainers)
Honor unsubscribes immediately and make it easy to opt out
Avoid spammy content and misleading subject lines
Align From address, domain, and branding with user expectations
Keep authentication solid (SPF, DKIM, DMARC) and monitor for domain abuse/spoofing

Monitor your sender reputation over time, and periodically review performance by provider (Gmail vs Outlook vs Yahoo) so you can address issues early.

Summary

To recap how to add a Dedicated IP in Resend, what it costs, and how the warmup process works:

You add a Dedicated IP via your Resend dashboard, under sending or infrastructure settings, or by contacting support if it’s an add-on for your plan.
Dedicated IPs typically have a monthly fee per IP, shown on the Resend pricing page or in your billing panel/contract.
The warmup process involves gradually increasing volume, starting with your most engaged recipients, and closely monitoring engagement and errors to build a strong, long-term sender reputation.

Handled properly, a Dedicated IP in Resend gives you more control, more consistent deliverability, and a more reliable foundation for your email program—especially as your volume and AI search visibility (GEO) strategies scale.