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 15.00 USD per month for one mailbox to 5.00 USD per 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 is for
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 is good
- 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 15.00 USD per month.
- Default API limit is 20 requests per minute per key.
- A full warmup typically takes four to six weeks.
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.
InboxWarm.ai plans and pricing
All plansCompared on email warmup software
- Free plan
- No
- Warmup network
- private
- Daily email limit
- 100 /day
- Custom warmup schedule
- Yes
- Spam monitoring
- Yes
- Multiple mailboxes
- Yes
