Freedom251 › Email Warmup Software
InboxWarm.ai
What InboxWarm.ai is
InboxWarm.ai warms Gmail, Outlook, and SMTP inboxes by sending, opening, and replying to warmup emails. Its stated aims are to build sender reputation, improve inbox placement, and reduce spam placement. Replies are generated with large language models, and the service describes its sending patterns as human-like. InboxWarm says it uses a private network of real seed inboxes rather than bots or recycled accounts. When warmup messages land in spam, its recovery feature marks them as not spam and moves them to the primary inbox. Supported setups include Gmail, Outlook, SendGrid, Amazon SES, Mailgun, Yahoo, and custom SMTP/IMAP. Plans include SPF, DKIM, and DMARC monitoring, plus real-time inbox-placement tracking. The REST API has 30 endpoints and is included in every plan; its default limit is 20 requests per minute per API key. Monthly plans range from $15 a month for one mailbox to $5 a month for 51–100 mailboxes, with up to 100 warmup emails per inbox per day. A 10-day trial covers one account without a credit card. InboxWarm says a full warmup typically takes about four to six weeks.
Who it suits
InboxWarm.ai is aimed at email senders ranging from startups to enterprises, including agencies, SaaS teams, and cold-email teams. It may suit teams managing multiple inboxes or using the included API.
What it does well
- Supports Gmail, Outlook, and custom SMTP/IMAP.
- Private network of real seed inboxes.
- Includes SPF, DKIM, and DMARC monitoring.
- 10-day trial covers one account without a credit card.
- API with 30 endpoints is included in every plan.
What to know first
- No free plan is available.
- One-mailbox plan costs $15 a month.
- Default API limit is 20 requests per minute per key.
- A full warmup typically takes four to six weeks.
Limits
The 10-day trial covers one email account. The listed paid tiers allow up to 100 warmup emails per inbox per day; the default API limit is 20 requests per minute per API key.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| 2–5 mailboxes | monthly · 2–5 mailboxes · up to 100 warmup emails/day/inbox | $11 a month |
| 1 mailbox | monthly · 1 mailbox · up to 100 warmup emails/day/inbox | $15 a month |
| 51–100 mailboxes | monthly · 51–100 mailboxes · up to 100 warmup emails/day/inbox | $5 a month |
| 21–50 mailboxes | monthly · 21–50 mailboxes · up to 100 warmup emails/day/inbox | $6 a month |
| 6–20 mailboxes | monthly · 6–20 mailboxes · up to 100 warmup emails/day/inbox | $8 a month |
| Custom & enterprise | more than 100 inboxes · volume pricing · SLA agreements · dedicated onboarding | On request |
As inboxwarm.ai lists them, read 30 Sept 2026. The maker's own page has the final word.
Getting started
- Open the InboxWarm.ai website.
- Start the 10-day trial for full warmup access to one email account without a credit card.
- Connect a Gmail, Outlook, or supported SMTP/IMAP sending setup.
- Choose a monthly mailbox plan, from 1 mailbox to 51–100 mailboxes.
- Manage inbox count from the dashboard, where billing adjusts proportionally on the next invoice.
- Use the public REST API, included in every plan, within its default rate limit.
Verdict
InboxWarm.ai combines inbox warmup, spam recovery, authentication monitoring, and API access. It offers a 10-day trial, while paid monthly pricing varies by mailbox count.
Questions
How much does InboxWarm.ai cost?
Monthly plans are 15.00 USD for one mailbox, 11.00 USD for 2–5, 8.00 USD for 6–20, 6.00 USD for 21–50, and 5.00 USD for 51–100 mailboxes. Custom pricing is available for more than 100 inboxes.
Is there a free plan or trial?
There is no free plan. The 10-day trial provides full warmup access for one email account without a credit card.
Which email setups does it support?
Supported sending setups include Gmail, Outlook, SendGrid, Amazon SES, Mailgun, Yahoo, and custom SMTP/IMAP.
Which platforms can I use?
InboxWarm.ai is available through the web and API.
Does every plan include API access?
Yes. Every plan includes the public REST API, which has 30 endpoints. Its default rate limit is 20 requests per minute per API key.
How long does warmup take?
InboxWarm says a full warmup typically takes about four to six weeks, with measurable improvement often appearing within two to three weeks.
Facts from InboxWarm.ai's own pages
- AI engagement
- The service sends, opens, and replies to warmup emails using LLM-generated contextual replies and human-like sending patterns. · inboxwarm.ai, 30 Sept 2026
- API
- The public REST API provides 30 endpoints for email accounts, warmup, deliverability, reports, spam tests, and system functions, included in every plan. · inboxwarm.ai, 30 Sept 2026
- API limit
- The default API rate limit is 20 requests per minute per API key. · inboxwarm.ai, 30 Sept 2026
- Authentication monitoring
- Plans include SPF, DKIM, and DMARC domain-health monitoring plus real-time inbox-placement tracking. · inboxwarm.ai, 30 Sept 2026
- Billing flexibility
- Users can add or remove inboxes from the dashboard, with billing adjusted proportionally on the next invoice. · inboxwarm.ai, 30 Sept 2026
- Founded
- 2026 · inboxwarm.ai, 28 Sept 2026
- Headquarters
- 8 The Green, STE A, Dover, DE 19901, US · inboxwarm.ai, 28 Sept 2026
- Integrations
- Supported sending setups include Gmail, Outlook, SendGrid, Amazon SES, Mailgun, Yahoo, and custom SMTP/IMAP. · inboxwarm.ai, 30 Sept 2026
- Security
- InboxWarm says credentials are encrypted end-to-end, never stored in plain text, and can be deleted with account data from the dashboard. · inboxwarm.ai, 30 Sept 2026
- Seed network
- InboxWarm says its warmup uses a private network of real seed inboxes rather than bots or recycled accounts. · inboxwarm.ai, 30 Sept 2026
- Spam recovery
- Its spam recovery engine marks warmup messages as not spam and moves them to the primary inbox when they land in spam. · inboxwarm.ai, 30 Sept 2026
- Support
- InboxWarm says its support team is available 24/7 by email at [email protected]. · inboxwarm.ai, 30 Sept 2026
- Target customers
- The company describes its audience as ranging from startups to enterprises, including agencies, SaaS teams, and cold-email teams. · inboxwarm.ai, 30 Sept 2026
- Trial terms
- The 10-day trial provides full warmup access for up to one email account without a credit card. · inboxwarm.ai, 30 Sept 2026
- Warmup timeline
- InboxWarm says a full warmup typically takes about four to six weeks, with measurable improvement often appearing within two to three weeks. · inboxwarm.ai, 30 Sept 2026
- What it does
- InboxWarm.ai automatically warms Gmail, Outlook, and SMTP inboxes to build sender reputation, improve inbox placement, and reduce spam placement. · inboxwarm.ai, 30 Sept 2026
Where InboxWarm.ai stands on Freedom251
- Email Warmup Software#14 of 24