5 Best White Label Cold Email Software for Agencies 2026
By Kushal Magar · October 22, 2026 · 13 min read
Key Takeaway
The best white label cold email software for agencies in 2026 is Smartlead: clients log in on your own domain, see reports and campaigns, and reply from the master inbox, for $29 per month per white-labeled client workspace on Pro ($94/mo) and up. Instantly is the cheapest entry, with white-label client access on Hypergrowth ($97/mo) and no separate fee listed. Woodpecker has the deepest branding controls, including colors and notification emails, at $27 plus $5 per active client per month. PlusVibe gives clients a branded app for handling replies on plans from $77/mo, with per-client white-labeling on its Agency plan from $497/mo. Saleshandy puts the whole platform on your domain with SSL handled, but only on custom-priced Enterprise. None of them fix bad data, so verify every client list before it reaches a workspace.
White label cold email software lets an agency run every client's outreach inside a platform that carries the agency's domain and logo, not the vendor's. Done well, the client logs in, sees your brand, and never wonders which tool you resell.
The catch is that "white label" means very different things across vendors. One tool brands the whole app on your subdomain, another gives clients a logo-stamped reply app, and a third charges per client for a view-only report portal.
This guide ranks 5 platforms that document a real white-label feature on their own sites: Smartlead, Instantly, Woodpecker, PlusVibe, and Saleshandy. Pricing and features come from each vendor's pricing page and help docs as of October 2026, and we have not run hands-on tests of each client portal.
Quick Summary
Pick Smartlead if clients should log in and answer replies on your domain. Pick Instantly for the lowest-cost white-label entry. Pick Woodpecker for the deepest branding at a fixed per-client price. Pick PlusVibe when clients mainly want to handle replies on their phone. Pick Saleshandy if you are ready for an Enterprise contract.
TL;DR: Best White Label Cold Email Software for Agencies
- 1. Smartlead — Best overall. Own-domain client portal with reporting and master inbox replies, $29/mo per white-labeled client workspace.
- 2. Instantly — Cheapest entry. White-label client access on Hypergrowth ($97/mo) with granular module sharing and no separate fee listed.
- 3. Woodpecker — Deepest branding. Colors, notification emails, and support contact rebranded for $27 + $5 per active client per month.
- 4. PlusVibe — Best client reply app. Branded app with an AI reply writer; per-client white-labeling on Agency from $497/mo.
- 5. Saleshandy — Best for enterprise agencies. Full platform on your domain with SSL provided, Enterprise plan only.
- Lead data — None of these tools clean client lists for you. Run them through SyncGTM email verification before import.
What White Label Cold Email Software Actually Brands
White label cold email software rebrands the client-facing layer of the platform: the login URL, the logo, and sometimes colors and system emails. The sending engine, warm-up network, and inbox rotation stay the vendor's and run behind your brand.
Across the five platforms in this guide, branding falls into four layers:
- Login domain. A CNAME record points a subdomain such as app.youragency.com at the vendor. Smartlead, Instantly, Woodpecker, and Saleshandy all document this.
- Visual identity. Logo and favicon at minimum. Woodpecker also lets you set the login page, primary, filter, and menu colors.
- System emails. Invites and notifications that would otherwise name the vendor. Woodpecker rebrands the sender and content, and Saleshandy brands client notifications.
- Client permissions. What a client can open: reports only, campaigns in view or edit mode, or the reply inbox.
One layer is easy to forget: link tracking. Give each client a custom tracking domain so tracked links point at the client's own domain instead of the vendor's shared one, which protects both privacy and inbox placement.
How We Ranked These Platforms
Each platform had to document white-label branding on its own website or help center. Two tools often listed for agencies, Mailshake and QuickMail, were left out because neither documents custom domains or rebranding as of October 2026.
We then scored every platform on five agency criteria:
- Custom domain: can clients log in on your subdomain?
- Branding depth: logo only, or colors and system emails too?
- Client access: view-only reporting, campaign editing, or reply handling?
- Per-client cost: flat, per-client add-on, or custom quote?
- Sending headroom: email account and volume limits once clients share one account.
1. Smartlead
Smartlead — white-labeled client portal for cold email agencies
Smartlead is a cold email platform best suited for lead generation agencies that want clients inside a branded portal on their own domain, at $29 per month per white-labeled client workspace.
Its white-label offering puts the app under your domain. Clients get access to reports and campaigns and can reply straight from the master inbox, so warm leads do not sit waiting for your team.
Each client lives in a separate workspace. Smartlead says agencies can set their own pricing packages and split lead credits across clients, which suits resellers who bill a platform fee on top of the retainer.
Every plan includes unlimited email accounts, so adding inboxes per client does not raise the bill. For a deeper look at limits and deliverability, read our Smartlead review.
Pros
- ✓ Client portal runs on your own domain, such as app.yourdomain.com
- ✓ Clients can view reports and campaigns and reply from the master inbox
- ✓ Unlimited email accounts on every plan
- ✓ Clear per-client price: $29/mo per white-labeled workspace
Cons
- ✗ White-label is a paid add-on, so cost grows with every client
- ✗ Adding client workspaces requires Pro ($94/mo) or higher
- ✗ The white-label page does not detail logo or color controls
Best for: Agencies with 5 to 30 retainer clients who want clients to log in, track results, and answer their own replies.
Pricing: Base $39/mo, Pro $94/mo, Unlimited Smart $174/mo, Unlimited Prime $379/mo (monthly billing). White labeling is $29/mo per client workspace, and Unlimited Prime includes three client workspaces. See Smartlead pricing.
2. Instantly
Instantly — cold email platform with white-label client access on Hypergrowth and Light Speed
Instantly is a cold email platform best suited for agencies that want white-label client access bundled into the plan, available on Hypergrowth ($97/mo) and Light Speed ($358/mo).
According to Instantly's agency white labeling guide, you point a subdomain of your choice at Instantly with a CNAME record and upload your logo (10 MB max). You then choose what each client sees: Campaigns in view or edit mode, Unibox, Analytics, CRM, and Blocklist.
Clients work inside your workspace on your subscription. That keeps billing simple, but Hypergrowth caps you at 25,000 uploaded contacts and 125,000 emails per month across every client you serve.
One rough edge: Instantly does not email invitations, so you add client addresses and send the invite link yourself. Compare the two biggest platforms in Smartlead vs Instantly or read the full Instantly review.
Pros
- ✓ White-label client access included on Hypergrowth and Light Speed, no separate fee listed
- ✓ Granular sharing: Campaigns (view or edit), Unibox, Analytics, CRM, Blocklist
- ✓ Custom subdomain through a single CNAME record
- ✓ Unlimited email accounts on Growth and Hypergrowth
Cons
- ✗ Not available on the $47/mo Growth plan
- ✗ Branding covers subdomain and logo; color controls are not documented
- ✗ Instantly does not send client invites, so you copy and send each link
- ✗ Client activity runs on your own subscription's contact and send limits
Best for: Agencies that already run Instantly and want branded client access without a per-client fee.
Pricing: Growth $47/mo, Hypergrowth $97/mo, Light Speed $358/mo (monthly billing, about 20% less billed yearly). White-label needs Hypergrowth or Light Speed. See Instantly pricing.
3. Woodpecker
Woodpecker — cold email platform with an Agency Panel and White Label add-on
Woodpecker is a cold email platform best suited for agencies that want the most complete branding at a fixed per-client price: $27 per month for the Agency Panel plus $5 per month for White Label, per active client.
The White Label add-on covers more than a logo. You set a subdomain, upload a logo in three sizes plus a favicon, and change the login page, primary, filter, and left-menu colors.
It also rebrands the notification email sender and content and adds your support email and website. Invited guests are unlimited, and they can browse campaigns in folders, view statistics, and open the Overview and Prospects tabs.
The Agency Panel handles the operations side: bulk campaign actions, centralized billing, and mailbox connection by the client without password sharing. More detail in our Woodpecker review.
Pros
- ✓ Deepest branding: subdomain, logo, favicon, and four color settings
- ✓ Rebrands notification emails so invites show no Woodpecker branding
- ✓ Clients connect mailboxes without sharing passwords
- ✓ Separate prospect database per client inside the Agency Panel
Cons
- ✗ Per-client add-ons stack to $32 per active client per month
- ✗ White-label guests are view-only and cannot export prospect data
- ✗ Existing guests must be removed and re-invited after switching to the branded app
- ✗ Base plan is priced by contacted prospects, so volume raises cost
Best for: Agencies that want clients watching fully branded reports while the agency keeps control of campaigns.
Pricing: Base plan from $35/mo for 500 contacted prospects and 8,000 emails per month (monthly billing), with unlimited email accounts. Agency Panel $27/mo and White Label $5/mo per active client. See Woodpecker agency pricing.
4. PlusVibe
PlusVibe — cold email outreach with dedicated client workspaces and a white-label client app
PlusVibe is a cold email platform best suited for agencies whose clients want to answer replies themselves, offering a white-label client app and dedicated client workspaces on its Agency plan from $497 per month.
The Agency plan lists "White-Labeling for Each Client" and "Dedicated Client Workspaces" alongside 500,000+ emails and 1,000,000+ active leads per month. Extra workspaces start at $29 per month.
The White Label Client App shows your logo on the login screen. Clients read and respond to prospect replies, get push notifications for new replies and ready AI drafts, and use the AI reply writer.
That makes PlusVibe the strongest pick for speed-to-lead on the client side. Agencies that need a branded reporting portal on their own domain should look at Smartlead or Woodpecker first.
Pros
- ✓ White-label client app with an AI reply writer and push alerts
- ✓ No separate charge for clients to install or use the app
- ✓ Agency plan covers 500,000+ emails per month and unlimited users
- ✓ Dedicated client workspaces, with extra workspaces from $29/mo
Cons
- ✗ Per-client white-labeling sits on the Agency plan, from $497/mo
- ✗ Help docs do not mention a custom login domain or color controls
- ✗ The client app centers on replies rather than full campaign reporting
Best for: Agencies whose clients want to handle positive replies themselves, fast, from a branded app.
Pricing: Personal $37/mo, Business $77/mo, Agency from $497/mo ($415/mo billed yearly). The white-label client app is available on Business and Agency. See PlusVibe pricing.
5. Saleshandy
Saleshandy — white-label cold email platform for agencies on the Enterprise plan
Saleshandy is a cold email platform best suited for larger agencies that want the full app on their own domain with their logo, available on the Enterprise plan at custom pricing.
Saleshandy's white label documentation walks through the setup under Company settings. You enter your brand domain, add the CNAME record, and Saleshandy issues SSL if your domain has none.
Branding covers the login screen logo, platform icon, favicon, and a company name of up to 128 characters. Clients then log in through branded URLs and receive branded notifications.
The gate is price. Self-serve plans top out at Scale, so you need a sales conversation before you can test white-label. Our Saleshandy review covers the rest of the platform.
Pros
- ✓ Full platform on your custom domain, with SSL provided if your domain lacks HTTPS
- ✓ Brands the login screen logo, platform icon, favicon, and company name
- ✓ Branded client login URLs and client notifications
- ✓ Unlimited email accounts on every plan, plus SOC 2 certification
Cons
- ✗ White-label is Enterprise-only, with custom pricing
- ✗ Starter and Pro users cannot use white-label at all
- ✗ Logos must be PNG under 1 MB; color controls are not documented
Best for: Larger agencies ready for an Enterprise contract that want the entire app under their own brand and domain.
Pricing: Starter $41/mo, Pro $99/mo, Scale $189/mo on monthly billing ($34, $76, and $149 billed yearly). White-label requires Enterprise at custom pricing. See Saleshandy pricing.
White Label Cold Email Software: Side-by-Side Comparison
| Platform | Custom domain | Branding | Client access | White-label cost | Plan needed |
|---|---|---|---|---|---|
| Smartlead | Yes | Your domain and brand | Reports, campaigns, master inbox replies | $29/mo per client workspace | Pro ($94/mo) and up |
| Instantly | Yes (CNAME) | Logo | Campaigns (view/edit), Unibox, Analytics, CRM, Blocklist | No separate fee listed | Hypergrowth ($97/mo) and up |
| Woodpecker | Yes | Logo, favicon, colors, notification emails, support contact | Campaigns, statistics, Overview, Prospects (view-only) | $5/mo per client + $27 Agency Panel | Agency Panel add-on |
| PlusVibe | Not documented | Logo on client app login | Replies, AI reply writer, push alerts | Included in plan | Business ($77/mo) for app; Agency ($497/mo) per client |
| Saleshandy | Yes (CNAME + SSL) | Logo, icon, favicon, company name | Branded login URLs and notifications | Custom quote | Enterprise |
Monthly list prices from each vendor's pricing page and help docs, October 2026.
What 10 White-Labeled Clients Actually Cost
Per-client pricing is where white-label cold email platforms split apart. Here is the monthly list cost of branding 10 client accounts, before any volume upgrades.
| Platform | 10-client monthly cost | How it is calculated |
|---|---|---|
| Instantly | $97 | Hypergrowth plan; all clients share 125,000 emails per month |
| Woodpecker | $355+ | 10 × ($27 + $5) = $320, plus a base plan from $35 sized to contacted prospects |
| Smartlead | About $384 | Pro $94 + 10 × $29, assuming no other client fees; Pro caps 90,000 sends per month |
| PlusVibe | $497+ | Agency plan starting price; extra workspaces from $29/mo each |
| Saleshandy | Custom | Enterprise quote required |
Instantly is cheapest on paper because white-label is not billed per client. The trade-off is shared limits: 10 active clients on one Hypergrowth workspace can hit the 125,000 monthly sends quickly.
Inboxes are a separate line item on every platform. Budget for them with our guide to the best email hosting for cold email.
White-Labeling Your Software Does Not White-Label Your Liability
Putting your logo on a vendor's platform makes you the face of every email sent through it. The FTC's CAN-SPAM compliance guide states that you cannot contract away your legal responsibility, and each violating email can draw penalties of up to $53,088.
Mailbox providers apply their own rules too. Google's email sender guidelines require anyone sending more than 5,000 messages a day to Gmail accounts to use SPF, DKIM, and DMARC, and to keep spam rates in Postmaster Tools below 0.30%.
Three habits keep a multi-client agency safe:
- Give every client separate sending domains, so one client's complaints stay contained.
- Add a working opt-out and the client's physical address to every sequence.
- Verify every list before import and test placement regularly with an email deliverability test.
Feeding Each Client Workspace a Verified Lead List
A branded portal shows clients results, so the list behind it decides what they see. Bounces and wrong contacts show up in their dashboard under your logo.
SyncGTM handles that layer for agencies with waterfall enrichment that checks multiple data providers in sequence and returns 76+ data points per lead. A typical per-client flow:
- Build the ICP list. Search people by title, seniority, company size, industry, location, and funding stage, at 0.2 credits per person returned.
- Find work emails. The work email finder tries providers in turn until one matches, at 1 credit per found email, and misses are not billed.
- Verify before import. Waterfall email verificationcosts 0.1 credits per address and removes risky contacts before they touch a client's sender reputation.
- Push to the client workspace. Send clean leads into Smartlead or Instantlycampaigns, and sync results to the client's CRM.
Plans start at $49/mo on SyncGTM pricing. For the wider agency stack, see our roundup of AI lead gen agency tools and the best waterfall contact providers.
How to Choose White Label Cold Email Software
- Clients should log in and reply on your domain → Smartlead.
- Tight budget, already on Instantly → Instantly Hypergrowth, and watch the shared send limit.
- Clients only need branded reports → Woodpecker, for full color and email rebranding at $32 per client.
- Clients want to work replies from their phone → PlusVibe and its white-label client app.
- Enterprise agency with procurement → Saleshandy Enterprise, with the whole platform on your domain.
Before signing, run a two-week pilot with one client. Check what the invite email, login page, and tracked links reveal, because those are where vendor branding usually leaks through.
Final Verdict
Smartlead is the best white label cold email software for most agencies in 2026. It combines an own-domain portal, client reply access, and unlimited email accounts at a clear $29 per client.
Instantly wins on entry cost, Woodpecker on branding depth, PlusVibe on client reply handling, and Saleshandy on full-platform branding for enterprise agencies.
Whichever portal you pick, your clients judge it by the replies it produces. Feed every workspace a verified list with SyncGTM so the dashboard under your logo shows meetings, not bounces.