Cold email deliverability comes down to three layers: the mailboxes and domains you send from (and their SPF, DKIM and DMARC records), how those mailboxes are warmed up and rotated, and how clean your list is before you send. Different tools cover different layers, so most outbound stacks combine two or three of them.
Below are the tools in our index for each layer, with the price each vendor publishes. Infrastructure tools like Zapmail set up the mailboxes; sequencers like Instantly and Smartlead warm them up and send; GlockApps tests inbox placement before you send; validators like ZeroBounce and Bouncer clean the list before a campaign goes out.
9 tools, 9 with public pricing. Every price and integration below was checked on the vendor's own site. Order is not a quality ranking.
Prices as published by each vendor. Confirm current plans and scope before you buy.
| Tool | Best for | Pricing | Free plan | HubSpot | Salesforce |
|---|---|---|---|---|---|
| 01Zapmail | Mailbox infrastructure: pre-warmed Google and Microsoft mailboxes with DNS set up automatically, exported to your sequencer. | Starter $39/mo (10 mailboxes), Growth $99/mo (30 mailboxes), Pro $299/mo (100 mailboxes, API) billed monthly; extra mailboxes $3.50, $3.25 and $3.00 each; yearly billing gives 2 months free | No | Unknown | Unknown |
| 02Instantly | Unlimited sending accounts with warmup, plus a lead database and an AI reply agent in the same tool. | Outreach: Growth $47/mo (5,000 emails/mo, 1,000 contacts), Hypergrowth $107/mo (125,000 emails/mo, 25,000 contacts), Light Speed $358/mo (500,000 emails/mo); Enterprise: custom; lead credits sold separately | No | Yes | Unknown |
| 03Smartlead | Unlimited mailboxes with warmup and mailbox rotation, and white-label client workspaces for agencies. | Base $39/mo, Pro $94/mo, Smart $174/mo, Prime $379/mo billed monthly ($32, $78, $144, $315/mo billed yearly); add-ons extra | No | Yes | Yes |
| 04lemlist | Deliverability tools inside a multichannel outbound platform with its own lead database. | Email $69/mo, Multichannel $109/mo billed monthly ($55 and $87/mo billed yearly); Enterprise: talk to sales; data and intent add-ons from $20/mo | No | Yes | Yes |
| 05Saleshandy | A low entry price with unlimited email accounts and warmup. | Starter $34/mo, Pro $76/mo, Scale $149/mo billed annually ($41, $99, $189 billed monthly) | No | Yes | Yes |
| 06Woodpecker | Free warmup and unlimited email accounts, priced by emails sent. | Email $39/mo, Multichannel (email + LinkedIn) $68/mo billed monthly ($26 and $55/mo billed annually), both 5,000 emails sent/mo; LinkedIn $29/mo per account; Scale: custom; add-ons (Lead Finder, integrations & API, Agency Panel) priced separately | No | Yes | Unknown |
| 07ZeroBounce | Cleaning lists before you send: bulk validation, an API and inbox placement testing. | Free 100 validation credits/mo; pay as you go from $39 for 2,000 validations; ZeroBounce ONE subscription from $99/mo | Yes | Unknown | Unknown |
| 08GlockApps | Inbox placement testing and DMARC monitoring: seed-list reports, spam-filter scores, and a free plan with 2 test credits. | Free $0 (2 spam-test credits, 10,000 DMARC messages); Bundle Essential $85/mo (30 credits), Growth $142/mo (90 credits), Enterprise $185/mo (150 credits); annual billing Save 30% at $59/$99/$129 per month ($708/$1,188/$1,548 paid annually, 360/1,080/1,800 credits); spam-test credit packs $16.99 (3 credits, valid 1 month), $47.99 (10 credits, valid 2 months), $75.99 (20 credits, valid 3 months); custom plans via sales | Yes | Yes | Unknown |
| 09Bouncer | Pay-as-you-go email verification with credits that never expire, plus inbox placement and blocklist tests. | Email verification pay as you go from $8 per 1,000 emails ($2,000 per 1M), credits never expire; Deliverability Kit Starter $25/mo, Standard $125/mo, Pro $250/mo; Enterprise custom | No | Yes | Unknown |
Product facts come from each vendor's own site, checked 2026-11-11. No hands-on benchmark or star rating is claimed.
Best for: Mailbox infrastructure: pre-warmed Google and Microsoft mailboxes with DNS set up automatically, exported to your sequencer.
Cold email infrastructure: pre-warmed Google Workspace and Microsoft 365 mailboxes with automated DNS setup (SPF, DKIM, DMARC) and one-click export to Instantly, Smartlead, lemlist and 50+ outreach tools.
Pricing
Starter $39/mo (10 mailboxes), Growth $99/mo (30 mailboxes), Pro $299/mo (100 mailboxes, API) billed monthly; extra mailboxes $3.50, $3.25 and $3.00 each; yearly billing gives 2 months free (public pricing)
CRM
HubSpot: Unknown. Salesforce: Unknown. Free plan: No.
Source: zapmail.ai, checked 2026-11-04.
Best for: Unlimited sending accounts with warmup, plus a lead database and an AI reply agent in the same tool.
Cold email platform with unlimited sending accounts and warmup, a lead database, an AI reply agent and a built-in CRM.
Pricing
Outreach: Growth $47/mo (5,000 emails/mo, 1,000 contacts), Hypergrowth $107/mo (125,000 emails/mo, 25,000 contacts), Light Speed $358/mo (500,000 emails/mo); Enterprise: custom; lead credits sold separately (public pricing)
CRM
HubSpot: Yes. Salesforce: Unknown. Free plan: No.
Source: instantly.ai, checked 2026-11-03.
Best for: Unlimited mailboxes with warmup and mailbox rotation, and white-label client workspaces for agencies.
Cold email automation with unlimited mailboxes, warmup, mailbox rotation, unified inbox, and a white-label client workspace for agencies.
Pricing
Base $39/mo, Pro $94/mo, Smart $174/mo, Prime $379/mo billed monthly ($32, $78, $144, $315/mo billed yearly); add-ons extra (public pricing)
CRM
HubSpot: Yes. Salesforce: Yes. Free plan: No.
Source: smartlead.ai, checked 2026-10-27.
Best for: Deliverability tools inside a multichannel outbound platform with its own lead database.
Multichannel outbound (email, LinkedIn, calls, SMS, WhatsApp) with a 650M+ lead database, deliverability tools and AI agents for signals, enrichment and messaging.
Pricing
Email $69/mo, Multichannel $109/mo billed monthly ($55 and $87/mo billed yearly); Enterprise: talk to sales; data and intent add-ons from $20/mo (public pricing)
CRM
HubSpot: Yes. Salesforce: Yes. Free plan: No.
Source: lemlist.com, checked 2026-10-26.
Best for: A low entry price with unlimited email accounts and warmup.
Cold email platform with unlimited email accounts, warmup, a B2B lead finder and CRM sync.
Pricing
Starter $34/mo, Pro $76/mo, Scale $149/mo billed annually ($41, $99, $189 billed monthly) (public pricing)
CRM
HubSpot: Yes. Salesforce: Yes. Free plan: No.
Source: saleshandy.com, checked 2026-10-26.
Best for: Free warmup and unlimited email accounts, priced by emails sent.
Cold email and LinkedIn outreach priced by emails sent, with free warmup, unlimited team members and email accounts, and HubSpot two-way sync.
Pricing
Email $39/mo, Multichannel (email + LinkedIn) $68/mo billed monthly ($26 and $55/mo billed annually), both 5,000 emails sent/mo; LinkedIn $29/mo per account; Scale: custom; add-ons (Lead Finder, integrations & API, Agency Panel) priced separately (public pricing)
CRM
HubSpot: Yes. Salesforce: Unknown. Free plan: No.
Source: woodpecker.co, checked 2026-10-27.
Best for: Cleaning lists before you send: bulk validation, an API and inbox placement testing.
Email validation and deliverability tools: bulk list cleaning, an API and inbox placement testing.
Pricing
Free 100 validation credits/mo; pay as you go from $39 for 2,000 validations; ZeroBounce ONE subscription from $99/mo (public pricing)
CRM
HubSpot: Unknown. Salesforce: Unknown. Free plan: Yes.
Source: zerobounce.net, checked 2026-10-22.
Best for: Inbox placement testing and DMARC monitoring: seed-list reports, spam-filter scores, and a free plan with 2 test credits.
Email deliverability platform: Inbox Insight seed-list placement testing, DMARC analytics, uptime and blocklist monitoring, Google Postmaster integration, and a free spam checker.
Pricing
Free $0 (2 spam-test credits, 10,000 DMARC messages); Bundle Essential $85/mo (30 credits), Growth $142/mo (90 credits), Enterprise $185/mo (150 credits); annual billing Save 30% at $59/$99/$129 per month ($708/$1,188/$1,548 paid annually, 360/1,080/1,800 credits); spam-test credit packs $16.99 (3 credits, valid 1 month), $47.99 (10 credits, valid 2 months), $75.99 (20 credits, valid 3 months); custom plans via sales (public pricing)
CRM
HubSpot: Yes. Salesforce: Unknown. Free plan: Yes.
Source: glockapps.com, checked 2026-11-11.
Best for: Pay-as-you-go email verification with credits that never expire, plus inbox placement and blocklist tests.
Email verification and deliverability testing: bulk list cleaning and an API, inbox placement and blocklist tests, and real-time verification on forms.
Pricing
Email verification pay as you go from $8 per 1,000 emails ($2,000 per 1M), credits never expire; Deliverability Kit Starter $25/mo, Standard $125/mo, Pro $250/mo; Enterprise custom (public pricing)
CRM
HubSpot: Yes. Salesforce: Unknown. Free plan: No.
Source: usebouncer.com, checked 2026-10-29.
Do not build sending infrastructure or warmup yourself. n8n fits around it: validate new contacts through a validation API before they enter a sequence, and route replies from your sequencer into HubSpot or Salesforce.
Read the Outbound & Sequencing build-vs-buy guideThe mailboxes, domains and DNS records (SPF, DKIM, DMARC) you send cold email from. Tools like Zapmail create Google Workspace and Microsoft 365 mailboxes on your domains, configure DNS and connect the mailboxes to a sequencer such as Instantly or Smartlead.
Most cold email tools include warmup: Instantly, Smartlead, Saleshandy and Woodpecker all list it. Zapmail also sells pre-warmed mailboxes that it says are ready to send from day one. Either way, ramp volume gradually and watch bounce and reply rates.
On Zapmail's published pricing, Starter is $39/mo for 10 mailboxes and extra mailboxes cost $3.00 to $3.50 each depending on the plan. Sending tools are priced separately; the table shows each vendor's plans.
Cold email infrastructure: pre-warmed Google Workspace and Microsoft 365 mailboxes with automated DNS setup (SPF, DKIM, DMARC) and one-click export to Instantly, Smartlead, lemlist and 50+ outreach tools.
Cold email platform with unlimited sending accounts and warmup, a lead database, an AI reply agent and a built-in CRM.
Cold email automation with unlimited mailboxes, warmup, mailbox rotation, unified inbox, and a white-label client workspace for agencies.
