Two paid inbox warmup services, compared on price, network, and whether standalone warmup still earns its keep in 2026.
| Warmy | Mailwarm | |
|---|---|---|
| Core job | Warmup plus a deliverability toolkit | Warmup only |
| Published pricing | None as of 2026; quote after a demo | Yes, listed on the site |
| Entry price | Historically about $49 per mailbox per month; now quote-based | $69 per month for 1 inbox, about 50 warmup emails a day |
| Pricing model | Volume-based, sized by warmup email volume | Per inbox, three fixed tiers plus custom |
| Top listed tier | Custom plan with a dedicated success manager | Scale, $479 per month for 10 inboxes |
| Overages | Not published | $0.02 per extra interaction |
| Warmup network | Separate B2B (business mailboxes) and B2C (consumer mailboxes) pools | One network of its own accounts |
| Free trial | 7 days, no card required | Not advertised |
| Extras | Google Postmaster integration, deliverability monitoring | Simple dashboard focused on warmup activity |
| Google's 2023 crackdown | Applies; see below | Applies; see below |
Warmy stopped showing public prices. As of 2026 its pricing page splits into B2B Sender, B2C Sender, and Custom plans, and the actual number comes after a demo call. Pricing is sized by the volume of warmup emails you want it to generate. Historical list prices started around $49 per mailbox per month and third-party roundups still quote that range, but I would not count on it holding once sales gets involved. There is a 7 day free trial with no card required, which is the honest way to find out what it does for you.
Mailwarm still publishes numbers: Starter at $69 per month for one inbox sending about 50 warmup emails a day, Growth at $159 per month for three inboxes, and Scale at $479 per month for ten. Those are annual billing prices, and extra interactions beyond your plan run $0.02 each. Per inbox that makes Mailwarm one of the pricier options in the category, and the cost compounds fast if you run the 10 to 30 inbox setups common in cold outreach.
Warmy makes sense if you want warmup plus instrumentation. It bundles deliverability monitoring and Google Postmaster integration, so you get some visibility into where your mail actually lands instead of trusting a warmup score on faith. If deliverability is a recurring problem you need to diagnose, not just a box to tick, that tooling has real value.
It is also the better fit if your audience is specific. The split between a B2B network (Google Workspace and Microsoft 365 mailboxes) and a B2C network (Gmail, Yahoo, and Outlook consumer accounts) matters: warming against the kind of inboxes you actually send to is more representative than warming against a generic pool. Newsletter and e-commerce senders lean B2C; cold outreach leans B2B.
The trade-off is the sales process. No public pricing means a demo call and a quote, and quote-based pricing tends to drift upward with your inbox count. Budget accordingly.
Mailwarm is the simpler product and it is honest about that. You connect an inbox, it exchanges a set number of emails per day with its network, opens them, replies to them, and pulls them out of spam. There is no suite to learn, and the pricing is on the site. If you want one tool that does one job with no discovery call, that is the pitch.
It fits a solo consultant or a small team warming one to three inboxes ahead of a campaign, where $69 to $159 a month for a few months is a tolerable line item and predictability beats features. The $0.02 per-interaction overage also makes short bursts easy to reason about.
Where it stops making sense is scale. At $479 for ten inboxes you are paying roughly $48 per inbox for a feature that sending platforms like Instantly and Smartlead include in plans that also do the sending. At that point a standalone warmup bill is hard to justify.
The elephant in this category is Google. In early 2023 Google told apps using the Gmail API to shut off automated warmup features or lose API access, with a February 13, 2023 deadline. GMass closed its warmup network at the end of January 2023, Saleshandy dropped Gmail warmup, and the tools that survived, including these two, moved to connecting over IMAP and SMTP instead of the API. Warmup did not become impossible; it became something Google has said it does not want, running through a side door.
That matters because warmup networks generate artificial engagement, and artificial engagement is the pattern the 2024 Google and Yahoo bulk sender rules were built to filter out: enforced SPF, DKIM, and DMARC, one-click unsubscribe, and spam complaint rates kept under 0.3 percent. A warmup pool can nudge your reputation, but it cannot fix a bad list, a misconfigured domain, or a volume spike, and it carries some risk of the network itself getting flagged. I treat warmup as a short ramp aid on new inboxes and domains, layered on top of correct authentication and slow volume increases. It is not a foundation and it is not insurance.
If I had to buy one, I would take Mailwarm for one to three inboxes because the pricing is public and the product is simple, and Warmy if I needed the deliverability tooling around the warmup and could sit through a sales call. But for most cold email senders the honest answer is neither: the sending platforms you probably already pay for bundle warmup, and the money is better spent on list quality and proper domain setup. Standalone warmup is a niche buy in 2026, and Google has made clear which way the wind is blowing.