InboxWarm.ai vs Swokei Email Warmup

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.

Swokei Email Warmup is a web-based outreach service for web design agencies and freelancers. It examines prospects’ websites in a headless browser, captures screenshots, and assesses design, copy, performance, and conversion paths. It can use those findings to write personalized outreach emails and send them from the user’s mailbox. Leads can be imported from spreadsheets, pasted rows, Google Sheets, a website URL, or a saved library. Positive replies can become deals in the built-in CRM, which supports pipeline stages, tasks, notes, files, and deal values. Mailbox warmup is included on every plan, with an automatic 30-day ramp and per-mailbox health and bounce-risk indicators. Swokei supports Gmail, Outlook, Yahoo, custom domains, and SMTP connections; for Gmail, it says it monitors only messages it sent. The Free plan costs nothing and starts with 20 credits, but has no mailboxes and does not allow sending. Paid plans start at $42/mo billed annually. The listed daily email limit is 50, and the warmup network is shared.