Warmy vs Warmbox
Choose Warmy if you want email warm-up alongside verification, DMARC monitoring and placement testing; choose Warmbox if you want published per-inbox plans with clear daily email limits. Both vendors currently offer automated inbox warm-up and support common email providers, but their pricing and product scope differ.
Last updated October 31, 2026.
At a glance
| Dimension | Warmy | Warmbox |
|---|---|---|
| Starting price | Plans start at $49/month | Solo: $19/month monthly or $15/month with yearly billing |
| Published plan limits | Exact mailbox and daily email allowances not published | Solo: 1 inbox, 50 emails/day; Start-up: 3, 250; Growth: 6, 500 |
| Additional deliverability tools | Verification, DMARC monitoring, placement tests | Blacklist and DNS checker, spam-score monitoring |
| API and automation | Warmy API, Zapier, Make and n8n | Not published |
| Trial | Seven days; no credit card required | Not published |
| Warm-up controls | AI-adjusted schedule; custom override | Custom timing, daily volume and reply rate |
| Email connections | Gmail, Microsoft 365, SendGrid, Mailgun, Brevo and SMTP | Gmail, Microsoft 365, Yahoo, Amazon SES and SMTP |
| Team access | Unlimited invited users sharing plan quotas | 1, 3 or 6 members on published plans |
| Agency organization | Shared subscription with invited team members | Separate brand workspaces |
| Support | Dedicated deliverability expert and 24/7 human support | Premium support on Solo and Start-up; enterprise support on Growth |
Scroll the table sideways to compare each row.
Which should you choose?
Choose Warmy if
- Teams combining warm-up with email verification and DMARC monitoring
- Teams that need placement tests and Google Postmaster data
- Developers building workflows with a published API
- Buyers who want a seven-day trial without a credit card
Choose Warmbox if
- Solo senders who need one inbox and a published daily allowance
- Teams comparing plans by inbox count and member count
- Senders who want adjustable warm-up schedules and reply rates
- Agencies using separate brand workspaces
The verdict
The deciding factor is whether you need a broader deliverability toolkit or a clearly priced warm-up plan. Warmy is the better fit for teams that want testing, monitoring, verification and API workflows alongside warm-up. Warmbox is the better fit for buyers who want to select a plan by its published inbox and daily email allowances.
Warmy vs Warmbox: common questions
- Are Warmy and Warmbox still available to buy?
- Yes. Both vendors currently publish pricing or sign-up options for their email warm-up services.
- Which has the lower published starting price?
- Warmbox lists Solo at $19 per month with monthly billing or $15 per month with yearly billing. Warmy says its plans start at $49 per month.
- How many inboxes can I warm up?
- Warmbox lists one inbox on Solo, three on Start-up and six on Growth. Warmy says team members share the mailboxes included in their plan but does not publish a specific starting mailbox allowance on its pricing page.
- Do both work with Gmail and Microsoft 365?
- Yes. Warmy and Warmbox both list Gmail and Microsoft 365 connections, as well as SMTP connection options.
- Which offers more tools beyond warm-up?
- Warmy lists email verification, DMARC monitoring, placement tests and Google Postmaster data alongside warm-up. Warmbox lists a blacklist and DNS checker and spam-score monitoring.
- Can I customize the warm-up schedule?
- Yes. Warmy says users can override its AI-adjusted schedule. Warmbox publishes controls for timing, daily email volume and reply rate.
- Is there a free trial?
- Warmy offers a seven-day trial without a credit card. Warmbox does not publish a trial on its pricing page.
- Which is a better fit for an agency?
- Warmbox publishes separate brand workspaces and plans with stated member and inbox allowances. Warmy allows invited team members to share a subscription and its quotas; agencies needing API workflows may also prefer its published API.