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Best Email Warm-Up Software in 2026

Email warm-up software is for people comparing services that support email sending preparation. Listed services may run on the web, through an API, as a browser extension, or on iOS and Android.

  1. 1

    Folderly

    Free plan APIWeb

    Folderly combines campaign drafting with delivery checks and monitoring, with a free option for limited Inbox Insights testing and free Pulse alerts.

    7.4 From $96/mo (annual) Visit site
  2. 2

    Mailreach

    Free plan APIWeb

    MailReach brings account warmup, reputation views, and detailed spam testing into one service. Allow for its recommended warmup period and review how platform usage is billed.

    7.2 Free plan · paid from $19.50/mo Visit site
  3. 3

    TrulyInbox

    Free plan APIWeb

    TrulyInbox pairs warmup messages with domain health checks and deliverability tracking. Compare its daily limits and billing terms with the number of accounts and messages you need.

    6.9 Free plan · paid from $22/mo (annual) · 7-day trial Visit site
  4. 4

    Instantly

    Free trial AndroidAPIiPhone+1

    Choose Instantly if you want cold email automation and B2B lead discovery alongside tools for campaigns and analytics.

    6.5 From $47/mo · 14-day trial Visit site
  5. 5

    QuickMail

    Free trial APIExtensionWeb

    QuickMail brings multichannel outreach, deliverability controls, provider connections, imports, and reply handling into one service.

    6.2 From $49/mo · 14-day trial Visit site
  6. 6

    Snov.io

    by Snov.io
    Free trial APIExtensionWeb

    Snov.io combines prospecting, outreach, deliverability checks, and CRM tools. It offers a free trial rather than a free plan, and its Starter plan costs $39 a month.

    6.1 Free plan · paid from $39/mo Visit site
  7. 7

    Smartlead

    Free trial APIWeb

    Smartlead combines campaign automation, reply handling and AI agents for cold email outreach. Consider the plan-specific contact and send allowances alongside its annual starting price.

    6.0 From $32.50/mo (annual) Visit site
  8. 8

    Warmup Inbox

    Free trial APIWeb

    Warmup Inbox combines warmup messaging with inbox placement, reputation, and blacklist monitoring. Compare the yearly-billed per-inbox plans and their listed warmup volumes before choosing a tier.

    5.7 Free plan · paid from $15/mo (annual) · 7-day trial Visit site
  9. 9

    Woodpecker

    Free trial APIExtensionWeb

    Woodpecker combines email and LinkedIn outreach with campaign automation, prospecting, and deliverability features.

    5.7 From $35/mo · 14-day trial Visit site
  10. 10

    Warmy

    Free trial APIWeb

    Warmy combines automated warm-up with monitoring, verification, integrations, and API options. Review volume pricing and API access requirements before committing.

    5.6 Pricing on request · 7-day trial Visit site
  11. 11

    Warmbox

    Paid Web

    Warmbox pairs automated inbox warming with controls and deliverability monitoring, plus a separate blacklist and DNS checker.

    5.1 From $15/mo (annual) Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare free plans, trial periods, and paid starting prices before choosing. If you need to read or change code, check the licence for the service you are considering, along with platform support and billing terms.

Questions

What does this list cover?

It covers software marketed for email warm-up, with services that may run on the web, an API, an extension, iOS, or Android.

Are free plans available?

Yes. A free plan is offered by services on this list, while other services use paid or freemium pricing.

Do these tools offer free trials?

Yes. Trial lengths listed here include 7 days and 14 days. Check the individual service for its exact terms.

What paid prices are listed?

Examples include $15 per month on annual billing for Warmbox, $32.50 on annual billing for Smartlead, and $49 per month for QuickMail.

Can I inspect or change the source code?

Check the licence for the service you are considering. The licence determines whether you can read, modify, or redistribute its code.

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