9 Best Cold Email Software for Agencies of 2026

Smartlead is our top pick for agencies: client workspaces start on Pro, white-label costs a published $29 per client workspace, and mailboxes and dedicated servers can be bought in the same account. Instantly is close behind for agencies that care most about flat pricing, with unlimited email accounts and a separate workspace per client. Saleshandy is the best value when you also need lead data, and Woodpecker has the most detailed agency panel. EmailBison is the choice for large agencies that want isolated infrastructure and unlimited workspaces for one flat $599 a month.

Top picks

Best overall

Smartlead

8.9 / 10

Lead gen agencies that want each client in its own branded workspace and buy mailboxes and dedicated servers from the same vendor.

Read the review →

Runner-up

Instantly

8.7 / 10

Agencies that add client inboxes often and want the bill to stay flat as mailbox counts grow.

Read the review →

Also great

Saleshandy

8.6 / 10

Agencies that need verified prospect data and sending in one account at a lower monthly price.

Read the review →

Comparison table

#	Tool	Best for	Pricing	Score
1	Smartlead	Lead gen agencies that want each client in its own branded workspace and buy mailboxes and dedicated servers from the same vendor.	Base $39 per month ($32 billed yearly); Pro $94 ($78 yearly) adds client workspaces; Unlimited Prime $379 ($315 yearly) includes 3 client workspaces; white-label $29 per client workspace per month	8.9
2	Instantly	Agencies that add client inboxes often and want the bill to stay flat as mailbox counts grow.	Outreach Growth $47 per month ($37.60 billed yearly); Hypergrowth $107 ($85.58 yearly); Light Speed $358 ($286.30 yearly); Agency bundle with lead credits $555 ($500 yearly)	8.7
3	Saleshandy	Agencies that need verified prospect data and sending in one account at a lower monthly price.	Starter $34 per month billed yearly ($41 monthly); Pro $76 ($99 monthly) with 10 users; Scale $149 ($189 monthly) with unlimited users; Enterprise with white-label by quote	8.6
4	Woodpecker	Agencies that want a clear panel of client sub-accounts and client-facing reports on their own domain.	See vendor pricing (USD check pending)	8.4
5	EmailBison	Large agencies sending hundreds of thousands of emails a month that want isolated infrastructure and no per-seat or per-workspace fees.	Base Plan $599 per month with 500,000 emails; additional monthly email buckets available	8.3
6	QuickMail	Smaller agencies that want an agency-level view of client workspaces and per-teammate client access.	Starter $49 per month with 1 workspace; Growth $99; Agency $299 with 2 workspaces and $49 per extra workspace	8.2
7	PlusVibe	Agencies that want a low-cost self-serve start and a path to isolated, white-labeled client setups.	Personal $37 per month ($30.80 billed yearly) with 25,000 emails; Business $77 ($64.20 yearly) with 150,000 emails; Agency from $497 per month	8.1
8	lemlist	Agencies whose client campaigns mix email with LinkedIn, calls or SMS and who want lead data in the same tool.	Email plan $69 per month ($55 billed yearly) with unlimited users and 50,000 emails; Multichannel $109 ($87 yearly) per user; Enterprise by quote	8.0
9	Snov.io	Budget-conscious agencies that need prospecting data, verification and sending in one low-cost account.	Starter $39 per month, or $29.25 billed yearly; Pro tiers from $74.25 billed yearly; Custom Ultra by quote	7.9

The full ranking

1. 1.

   Rank 1 · Best overall

   Smartlead

   A cold email platform with unlimited mailbox connections, client workspaces from the Pro plan and a white-label add-on priced per client.

   smartlead.ai

   8.9

   out of 10

   Best for: Lead gen agencies that want each client in its own branded workspace and buy mailboxes and dedicated servers from the same vendor.

   Smartlead is the tool on this list that prices agency work most openly. Client workspaces become available on the Pro plan, the Unlimited Prime plan includes three of them, and the white-label option costs $29 a month for each client workspace, which lets an agency put its own brand on the platform and keep every client separate. Replies from all campaigns and clients land in one Master Inbox where they can be sorted by intent, noted and scheduled for follow-up. Infrastructure is sold in the same account: SmartSenders buys Google, Outlook or SMTP mailboxes from $4.50 per mailbox a month, and SmartServers adds dedicated IPs at $39 per server. Sending runs from 6,000 emails and 2,000 contacts on Base to 500,000 emails on Prime. The trade-off is cost creep, because workspaces, white-label, verification and servers all add to the bill. For an agency with a steady client roster, it is the most complete package we compared.

   Standout feature

   White-label client workspaces are priced openly at $29 a month per client, with client workspaces available from the Pro plan.

   Use cases

   • Lead gen agencies

     Give each client a branded workspace and access to its own campaigns

     Outcome: Clients see results under the agency's brand

   • Outbound agencies

     Buy mailboxes and dedicated servers for a new client inside Smartlead

     Outcome: Faster client onboarding without a separate infrastructure vendor

   • Agency SDR teams

     Work replies for every client from the Master Inbox

     Outcome: One queue for positive replies across accounts

   Key features

   • Client workspaces available from the Pro plan, with 3 included on Unlimited Prime
   • White-label add-on at $29 a month per client workspace
   • Master Inbox that shows replies from all campaigns and clients in one shared view
   • SmartSenders mailboxes from $4.50 per mailbox per month and SmartServers dedicated IPs at $39 per server
   • Sending tiers from 6,000 emails on Base to 500,000 on Unlimited Prime

   Pros

   • +White-label pricing is published per client, so agency margins are easy to plan
   • +Mailboxes, servers and verification can all be bought inside one account
   • +Unlimited contacts start on the Unlimited Smart plan

   Cons

   • -Client workspaces are not available on the Base plan
   • -White-label is an extra monthly cost for each client
   • -Many add-ons make the true monthly total harder to read
2. 2.

   Rank 2 · Runner-up

   Instantly

   A cold email platform with unlimited email accounts on a flat fee, a workspace for each client and an Agency bundle for 500,000 emails a month.

   instantly.ai

   8.7

   out of 10

   Best for: Agencies that add client inboxes often and want the bill to stay flat as mailbox counts grow.

   Instantly's agency pitch is simple: one subscription, unlimited email accounts and a separate workspace for every client. Because inbox count never changes the price, an agency can add new client domains without eating into margin, and warmup is included for every account. Each workspace keeps a client's leads, campaigns and replies apart, and reports per client track reply rate and meetings booked so they can be shared. The Outreach plans run from Growth at $37.60 a month billed yearly, which is limited to 1,000 uploaded contacts, to Light Speed with 500,000 emails and the SISR system that assigns dedicated server and IP blocks. Agencies that also need lead data can take the Agency bundle, which adds 10,000 Instantly credits for its 450M+ contact database. What we did not find is a white-label option for client-facing branding. For agencies that care more about volume and flat cost than branding, Instantly is a strong second.

   Standout feature

   Unlimited email accounts and warmup on a flat fee from $37.60 a month billed yearly, with a separate workspace for each client.

   Use cases

   • Growing agencies

     Spin up a new workspace and warm a batch of client inboxes

     Outcome: New client live without raising the subscription

   • Account managers

     Share per-client reports on replies and meetings

     Outcome: Client calls backed by campaign numbers

   • High-volume agencies

     Run client campaigns on Light Speed with rotating dedicated IPs

     Outcome: Sending reputation kept away from other senders

   Key features

   • Unlimited email accounts and unlimited warmup on every Outreach plan
   • Separate workspace for each client, keeping leads, campaigns and inbox apart
   • Shareable per-client reports on reply rate and meetings booked
   • Agency bundle with 500,000 emails, 100,000 uploaded contacts, 10,000 lead credits and the SISR rotating IP system
   • Done-for-you setup of client email accounts

   Pros

   • +Adding client inboxes does not change the price
   • +Workspaces and reporting per client are part of the documented agency setup
   • +Sending, lead data and CRM can be bought as one bundle

   Cons

   • -No white-label option is listed on the pricing or agency pages
   • -Growth caps uploaded contacts at 1,000 a month
   • -The Agency bundle costs $555 a month billed monthly
3. 3.

   Rank 3 · Also great

   Saleshandy

   A cold email and lead data platform with unlimited email accounts, a client dashboard and white-label branding for agencies.

   saleshandy.com

   8.6

   out of 10

   Best for: Agencies that need verified prospect data and sending in one account at a lower monthly price.

   Saleshandy is the best value pick for agencies that also buy lead data. Every plan connects unlimited email accounts without per-inbox fees and includes monthly lead finder credits for an 852M+ contact database, where one credit reveals a verified work email after a waterfall across several providers. The agency page describes one dashboard for all clients and teams, analytics that can be shared with clients, sender rotation and a unified inbox that flags positive replies. Client access can be set to full or limited, and the white-label option adds the agency's logo, colors and custom domain. Pricing starts at $34 a month billed yearly, but Starter is a single seat with 2,000 active prospects, so most agencies will look at Pro with 10 users or Scale with no seat limit. The main catch is that white-label sits under the Enterprise tier, which is priced on request. For data-heavy client work on a budget, it is hard to beat.

   Standout feature

   Lead finder credits for an 852M+ contact database are included in every plan, from $34 a month billed yearly.

   Use cases

   • Small agencies

     Find verified contacts and send from client mailboxes in the same account

     Outcome: One tool instead of a sender plus a data vendor

   • Agency owners

     Track every client's sends, opens and replies from one dashboard

     Outcome: Faster client reporting

   • Agencies with client logins

     Give clients limited access to view their campaigns

     Outcome: More transparency without handing over control

   Key features

   • Unlimited email accounts with no per-inbox fees
   • One dashboard for all clients and teams with shareable analytics
   • White-label with agency logo, colors and custom domain
   • Client access control with full or limited permissions
   • 852M+ contact database with 1,500 to 8,000 lead finder credits a month

   Pros

   • +Lead data credits are included in every plan
   • +Scale removes the seat limit for larger agency teams
   • +Clients can get full or limited access to their own campaigns

   Cons

   • -White-label is listed under the custom-priced Enterprise tier
   • -Starter is a single seat with 2,000 active prospects
   • -Personalized onboarding starts on Scale
4. 4.

   Rank 4

   Woodpecker

   A cold email tool with an Agency Panel add-on that gives each client a sub-account and offers a white-label reporting app.

   woodpecker.co

   8.4

   out of 10

   Best for: Agencies that want a clear panel of client sub-accounts and client-facing reports on their own domain.

   Woodpecker has one of the most specific agency feature sets we found. The Agency Panel add-on gives each client its own sub-account, and from one panel an agency can stop, pause or start campaigns in bulk, upload email accounts in bulk, apply a global blacklist and see all client stats together. Clients can connect their mailboxes without sharing passwords, client domains get automated audits, and a white-label reporting app gives clients real-time, view-only access on the agency's own domain. Deliverability stats for every client can be exported as a CSV summary or a PDF report. The base product connects unlimited email accounts, includes unlimited team members and verifies addresses for free, but only three warm-ups are included before you buy more. Both the panel and white-label are charged per active client each month, so costs track the size of your roster. Its pricing page loads prices with scripts, so we have marked the USD figure as pending.

   Standout feature

   The Agency Panel puts every client in its own sub-account with bulk actions and a white-label reporting app.

   Use cases

   • Agencies with many small clients

     Pause or restart every client's campaigns in one bulk action

     Outcome: Less time spent switching accounts

   • Account managers

     Send clients a branded, view-only reporting link

     Outcome: Clients check results without access to settings

   • Agency onboarding teams

     Have clients connect their own mailboxes securely

     Outcome: No password sharing during setup

   Key features

   • Agency Panel add-on with a sub-account for each client, billed per active client
   • White-label reporting app on the agency's domain with client view-only access
   • Bulk campaign actions, bulk email account upload and bulk domain blacklisting
   • Clients can connect mailboxes without sharing passwords
   • Unlimited email accounts, unlimited team members and free email verification

   Pros

   • +Agency tooling is purpose-built and documented in detail
   • +Clients connect their own inboxes without handing over passwords
   • +Unlimited team members at no extra cost

   Cons

   • -The Agency Panel and white-label are paid add-ons per active client
   • -Only 3 warm-ups are included before buying more
   • -We could not confirm USD prices from the pricing page as fetched
5. 5.

   Rank 5

   EmailBison

   A private email sequencer for agencies and GTM teams that runs on isolated infrastructure with dedicated IP pools and unlimited workspaces.

   emailbison.com

   8.3

   out of 10

   Best for: Large agencies sending hundreds of thousands of emails a month that want isolated infrastructure and no per-seat or per-workspace fees.

   EmailBison is built for agencies that have outgrown shared sending infrastructure. It runs each customer on isolated, single-tenant clusters with dedicated IP pools that its engineers manage, which is meant to keep other senders from affecting your reputation. Pricing is one plan: $599 a month for 500,000 emails, with more monthly buckets available, and that price includes unlimited workspaces, unlimited teammates and unlimited lead storage. Each client workspace keeps its data isolated, and roles and permissions control who sees what. Sequencing covers multi-step campaigns, step-level A/B tests, reply-based follow-ups and custom tracking domains, while the Master Inbox is a full email client with real-time syncing. It connects natively to Clay and EmailGuard and syncs to HubSpot and Salesforce through OutboundSync. The downside is the entry price, which only makes sense once an agency already sends at volume, and there is no built-in lead database. For large shops, the flat fee can be cheaper than per-workspace add-ons elsewhere.

   Standout feature

   Unlimited workspaces, teammates and lead storage are all included in a single $599 a month plan.

   Use cases

   • Large lead gen agencies

     Move dozens of clients into isolated workspaces on dedicated IP pools

     Outcome: Client sending separated from shared infrastructure

   • Agency ops teams

     Pipe leads from Clay into sequences through the native integration

     Outcome: Fewer manual list imports

   • Agency developers

     Automate campaign and lead management with the API and webhooks

     Outcome: Custom client reporting and workflows

   Key features

   • Single-tenant clusters with dedicated IP pools managed by its engineers
   • Unlimited workspaces with isolated data for each client
   • Unlimited teammates with roles and permissions and no per-seat fees
   • Master Inbox with full replying, attachments and real-time syncing
   • Native Clay and EmailGuard integrations plus full API and webhooks

   Pros

   • +One price covers unlimited workspaces, teammates and lead storage
   • +Isolated sending keeps one client's traffic away from other tenants
   • +Private Slack channel with onboarding and migration help

   Cons

   • -The only published plan starts at $599 a month
   • -Sales-led start through a demo booking
   • -No lead database is listed
6. 6.

   Rank 6

   QuickMail

   A cold email and LinkedIn outreach tool with an agency dashboard, unlimited senders and users, and an Agency plan with two client workspaces.

   quickmail.com

   8.2

   out of 10

   Best for: Smaller agencies that want an agency-level view of client workspaces and per-teammate client access.

   QuickMail treats an agency as a set of client workspaces under one roof. Its agency dashboard shows clients and campaigns together, so an account manager can spot which client needs attention before drilling into details, and teammates are invited once at agency level and then given access to specific clients. Every change lands in a searchable, time-stamped activity log. Campaigns mix email and LinkedIn steps, support Liquid syntax and custom attributes, and use A/Z testing, while inbox rotation, Deliverability AI and blacklist monitoring cover sending health. Every plan includes unlimited email senders, LinkedIn accounts and users, plus free warmup through MailFlow. The catch is how workspaces are counted: Starter at $49 and Growth at $99 include one workspace each, and the $299 Agency plan includes two with each extra one at $49 a month, which adds up for agencies with many clients. QuickMail sends through each inbox's own provider rather than its own servers.

   Standout feature

   An agency dashboard with per-client team access and an activity log, on plans with unlimited users.

   Use cases

   • Boutique agencies

     See every client's campaign performance from the agency dashboard

     Outcome: Problems caught before the client call

   • Agency team leads

     Give each SDR access only to the clients they work on

     Outcome: Cleaner permissions and an audit trail

   • Multichannel agencies

     Combine email and LinkedIn steps in one client campaign

     Outcome: More touchpoints without a second tool

   Key features

   • Agency dashboard that brings client workspaces and campaign performance into one view
   • Teammates invited at agency level with access assigned per client
   • Agency plan with 2 workspaces, 100,000 contacts and 500,000 emails a month
   • Unlimited email senders, LinkedIn accounts and users on every plan
   • Free AutoWarmer with MailFlow and inbox rotation

   Pros

   • +Unlimited users on every plan, with no per-seat fees
   • +Searchable, time-stamped activity log for team changes
   • +Email and LinkedIn steps in the same campaign

   Cons

   • -Starter and Growth include only one workspace
   • -Each extra workspace on Agency costs $49 a month
   • -No built-in lead database
7. 7.

   Rank 7

   PlusVibe

   A cold email platform, formerly pipl.ai, with sender rotation and warmup on self-serve plans and an Agency plan with isolated servers and white-labeling per client.

   plusvibe.ai

   8.1

   out of 10

   Best for: Agencies that want a low-cost self-serve start and a path to isolated, white-labeled client setups.

   PlusVibe, which is rebranding from pipl.ai, splits cleanly into self-serve and agency tiers. The Personal plan costs $37 a month, or $30.80 billed yearly, and includes 25,000 emails, 30,000 active leads, 1,000 enrichment credits, warmup, a unified inbox with reply sentiment detection and automatic rotation of sender emails. Business at $77 raises that to 150,000 emails and 100,000 active leads and adds AI reply agents, webhooks and API access. The Agency plan, from $497 a month, is where the client features live: an isolated sending server per client, dedicated connector IPs with rotation, dedicated client workspaces, white-labeling for each client, unlimited users and a private Slack channel. That makes it a sensible path for an agency that starts small on Personal and later moves clients onto separated infrastructure. The weak spot is the middle: client workspaces are not listed on Personal or Business, so you either run clients in one workspace or jump to Agency.

   Standout feature

   The Agency plan pairs dedicated client workspaces with an isolated sending server and white-labeling for each client.

   Use cases

   • New agencies

     Run first client campaigns on Personal with 25,000 emails a month

     Outcome: Low monthly cost while the roster is small

   • Established agencies

     Move each client onto an isolated sending server on the Agency plan

     Outcome: Client reputations kept apart

   • Agency SDRs

     Triage replies by sentiment in the unified inbox

     Outcome: Positive replies handled first

   Key features

   • Agency plan with an isolated sending server and dedicated IPs for each client
   • Dedicated client workspaces and white-labeling for each client on Agency
   • Unified inbox with AI reply sentiment detection and auto-rotation of sender emails
   • 25,000 emails and 30,000 active leads on Personal; 150,000 emails and 100,000 active leads on Business
   • Built-in enrichment credits on every plan

   Pros

   • +Low entry price for the email volume included
   • +Agency tier documents both white-labeling and isolated infrastructure
   • +API, webhooks and AI reply agents on Business

   Cons

   • -Client workspaces and white-labeling only appear on the Agency plan
   • -Agency pricing starts at $497 a month and is sold through a demo
   • -The free trial is limited to 3 inboxes and 1,000 emails
8. 8.

   Rank 8

   lemlist

   A multichannel outreach platform with unlimited users and email senders on its Email plan, a 650M+ lead database and LinkedIn, SMS and calling steps.

   lemlist.com

   8.0

   out of 10

   Best for: Agencies whose client campaigns mix email with LinkedIn, calls or SMS and who want lead data in the same tool.

   lemlist is not built around client workspaces, but it earns a place for agencies whose clients want more than email. The Email plan, at $55 a month billed yearly, includes unlimited users, email senders and campaigns with up to 50,000 emails a month, plus a 650M+ lead database, email and phone finders, AI agents for signals and enrichment, and warmup with a Deliverability Hub. Deliverability tooling includes inbox rotation, rotating IPs, custom tracking domains and in-app domain and email purchase. The Multichannel plan adds LinkedIn automation, SMS, a dialer and a WhatsApp add-on, but it is priced per user with five senders each, which gets expensive for an agency staffing many clients. Operations features such as guest users, shared campaigns, campaign review and roles and permissions help a team share work. We did not find dedicated client workspaces or a white-label option on the pricing page, so separating clients takes more discipline than in the agency-first tools above.

   Standout feature

   The Email plan includes unlimited users and email senders with 50,000 emails a month from $55 billed yearly.

   Use cases

   • Multichannel agencies

     Run email plus LinkedIn and call steps for a client

     Outcome: More reply paths from one sequence

   • Data-driven agencies

     Build client lead lists from the 650M+ database and launch campaigns

     Outcome: Prospecting and sending in one account

   • Agencies with freelancers

     Add freelancers as guest users on shared campaigns

     Outcome: Help without buying extra full seats

   Key features

   • Email plan with unlimited users, email senders and campaigns, up to 50,000 emails a month
   • 650M+ lead database with email and phone number finder
   • Guest users, roles and permissions, and shared campaigns
   • Inbox rotation, in-app domain and email purchase, and a Deliverability Hub
   • LinkedIn, SMS, WhatsApp add-on and built-in dialer on Multichannel

   Pros

   • +Strong personalization and multichannel steps for client campaigns
   • +Lead data and sending live in one account
   • +Guest users let clients or freelancers join without full seats

   Cons

   • -No dedicated client workspaces or white-label are listed on the pricing page
   • -Multichannel is priced per user with 5 senders each
   • -Data credits are a separate add-on
9. 9.

   Rank 9

   Snov.io

   A sales suite with email finding, verification, warmup and cold email campaigns, sold with unlimited team seats and unlimited senders.

   snov.io

   7.9

   out of 10

   Best for: Budget-conscious agencies that need prospecting data, verification and sending in one low-cost account.

   Snov.io is the low-cost option for agencies that want data and sending under one login. Starter costs $29.25 a month billed yearly and includes unlimited team seats, unlimited senders, unlimited campaigns and follow-ups, 1,000 credits for prospect search, email search and verification, and 5,000 recipients, with only the first contact to a lead counted. Its agency page highlights unlimited seats, sender accounts, lists and data export, plus reports that follow each account's campaigns. Team tools include data access management, shared do-not-email lists and shared prospect notes. Deliverability covers mailbox rotation, warmup, placement checks and blacklist monitoring, though Starter warms only three mailboxes at a time while Pro plans warm without limit. What it lacks for agency work is client separation: we did not find client workspaces or white-label branding, so clients share one account structure. LinkedIn automation is extra at $69 a month per account slot.

   Standout feature

   Unlimited team seats and senders from $29.25 a month billed yearly.

   Use cases

   • Starting agencies

     Find and verify client prospects, then send from unlimited senders

     Outcome: Data and outreach on one budget

   • Agencies with large teams

     Add every researcher and SDR at no extra seat cost

     Outcome: Lower cost per team member

   • Agency managers

     Share do-not-email lists across team members

     Outcome: Fewer repeat contacts to opted-out leads

   Key features

   • Unlimited team seats, senders, campaigns and follow-ups on every plan
   • Recipient-based limits, from 5,000 recipients on Starter
   • Email finder, 7-tier email verification and a B2B leads database
   • Mailbox rotation, warmup and deliverability checks
   • Team data access management and shared do-not-email lists

   Pros

   • +The cheapest paid starting price on this list
   • +Unlimited seats suit agencies with many staff
   • +Prospecting, verification and sending share one credit pool

   Cons

   • -No client workspaces or white-label are listed
   • -Starter warms only 3 mailboxes at once
   • -LinkedIn automation costs $69 a month per account slot