EmailWarmup vs Mailwarmup
EmailWarmup
emailwarmup.onlineMailwarmup
mailwarmup.appSide by side
| Figure | EmailWarmup | Mailwarmup |
|---|---|---|
| Price from | $19/mo | $19/mo |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Plans published | 5 | 4 |
| Spec score · Email Warmup Software | 7.8 (#15) | 8.4 (#4) |
| Purpose | EmailWarmup uses AI-generated warmup conversations and automated engagement to help build sender reputation for cold email. | Mailwarmup automatically generates positive email engagement through its network to raise sender reputation. |
| Support | The maker says support questions reach the people who write the code, and provides contact routes for support, privacy requests, and enterprise plans. | The pricing page advertises 24x7 support, while the contact page offers chat or ticket help. |
| Warmup network | Connected mailboxes are automatically paired bidirectionally with other active mailboxes, and messages are exchanged within the network. | The service says its network contains more than 10,000 inboxes. |
Plans
EmailWarmup
- Starter$19 a month
- Growth$49 a month
- Agency$149 a month
- CommunityPrice not published
- EnterprisePriced on request
Mailwarmup
- Starter$19 a month
- Growth$49 a month
- Scale$99 a month
- Powerhouse$149 a month
In their own words
EmailWarmup
EmailWarmup is a web and API service that uses AI-generated conversations and automated engagement to warm mailboxes for cold-email sending. Connected mailboxes pair in both directions with active peers, exchanging messages inside the network. AI creates subjects and replies with changing topics and tones, retaining a [WARMUP] subject tag. Slow, medium, and fast schedules gradually raise sending volume over several days. Supported engagement includes threaded replies, reads, stars, spam-folder rescue, and delivery checks. Gmail connects through OAuth, while SMTP/IMAP credentials are also supported; the maker says credentials are encrypted at rest and personal email content is not read or stored. Account data is retained while an account is active and deleted within 30 days after account deletion. A free Community plan lists one mailbox and 10 warmup emails per day. Paid plans start with Starter at $19 a month; Growth is $49 a month and Agency is $149 a month. EmailWarmup does not send outreach campaigns, repair blocklisted domains, or guarantee inbox placement.
Mailwarmup
Mailwarmup is a web service that aims to raise sender reputation by generating positive email engagement through a shared network of more than 10,000 inboxes. After users connect an account using SMTP and IMAP details, it sends scheduled messages on their behalf. Network inboxes open and reply to messages, mark them important, and remove them from spam. A dashboard tracks warmup results, including messages removed from spam, categories, and email deliverability. Listed integrations include Gmail, Outlook, and SMTP; users can control sending and limits. Other listed tools include a Mail Health Score, blacklist monitoring, delivery statistics, blacklist removal prompts, and AI ramp ups in beta. Warmup messages can be filtered into a separate folder using the subject keyword “WUA.” There is no free plan, but a 7-day trial is offered. Starter costs $19 a month for one email account and up to 50 positive engagements per day. Growth is $49 a month for three accounts and up to 50 engagements daily; Scale is $99 a month for eight accounts and up to 100 daily; Powerhouse is $149 a month for eight accounts and up to 300 daily. Warmup does not guarantee inbox placement.