EmailWarmup.com vs InboxWarm.ai
EmailWarmup.com
emailwarmup.comInboxWarm.ai
inboxwarm.aiSide by side
| Figure | EmailWarmup.com | InboxWarm.ai |
|---|---|---|
| Price from | $29/mo | $5/mo |
| Free plan | — | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 2 | 6 |
| Spec score · Email Warmup Software | 8.2 (#8) | 8.2 (#10) |
| API | The Email Warmup API supports connecting inboxes via REST API or SMTP, automated warmup controls, reputation and placement data, and webhooks. | The public REST API provides 30 endpoints for email accounts, warmup, deliverability, reports, spam tests, and system functions, included in every plan. |
| Headquarters | Canada | 8 The Green, STE A, Dover, DE 19901, US |
| Integrations | The homepage lists Salesloft, Outreach, Apollo, Instantly, Smartlead, Reply.io, Lemlist, Mailshake, Woodpecker, Mixmax, HubSpot, Salesforce, Pardot, Marketo, Eloqua, Klaviyo, Mailchimp, Make.com, and n8n. | Supported sending setups include Gmail, Outlook, SendGrid, Amazon SES, Mailgun, Yahoo, and custom SMTP/IMAP. |
| Security | The privacy policy says it uses physical, electronic, and administrative safeguards and SSL encryption for sensitive financial data, while stating that absolute security cannot be guaranteed. | InboxWarm says credentials are encrypted end-to-end, never stored in plain text, and can be deleted with account data from the dashboard. |
| Support | The homepage offers a dedicated email deliverability consultant and describes deliverability consultation as free. | InboxWarm says its support team is available 24/7 by email at [email protected]. |
Plans
InboxWarm.ai
- 51–100 mailboxes$5 a month
- 21–50 mailboxes$6 a month
- 6–20 mailboxes$8 a month
- 2–5 mailboxes$11 a month
- 1 mailbox$15 a month
- Custom & enterprisePriced on request
In their own words
EmailWarmup.com
EmailWarmup.com has no write-up on Specifiction yet; its figures are above.
InboxWarm.ai
InboxWarm.ai automatically warms Gmail, Outlook, and SMTP inboxes to build sender reputation, improve inbox placement, and reduce spam placement. It sends, opens, and replies to warmup messages using contextual replies generated by large language models and human-like sending patterns. InboxWarm describes its seed network as private and made up of real inboxes. Its spam recovery feature marks warmup messages as not spam and moves them to the primary inbox when they land in spam. Supported setups include Gmail, Outlook, SendGrid, Amazon SES, Mailgun, Yahoo, and custom SMTP/IMAP. Plans include SPF, DKIM, and DMARC domain-health monitoring and real-time inbox-placement tracking. Every plan includes a public REST API with 30 endpoints; the default rate limit is 20 requests per minute per API key. Monthly prices 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 on those listed tiers. A 10-day trial covers one email account without a credit card.