Warmbly vs Warmy (2026): which should you pick?
As of Nov 13, 2026, Warmy grades higher than Warmbly: 2.4 against 2.2 out of 4.0.
Checked Oct 18, 2026 and Nov 13, 2026 · graded Oct 18, 2026 and Nov 13, 2026 by ToolGPA
Warmy grades higher on features. They get the same grade on value for money, the free plan, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Warmbly
Open-source cold email platform with mailbox warmup
Warmy
Email warm-up with seed testing, verification and DMARC monitoring
Which one is for you
Pick Warmbly if
- Fits if you send cold email from several mailboxes and want warmup built in
- Works for teams happy to self-host and read the source
Look elsewhere if
- Skip it if you want a free plan, as there is only a 14-day trial
- Tight if you send in volume, since Starter stops at 150 cold emails a day
- Pricey if you need roles and an audit log, which start at Business, $263 a month
- Watch out: self-hosted warmup only uses the mailboxes you connect, not the shared pool
- Watch out: Agency plans pool sends across clients, and top-up packs cost extra
Pick Warmy if
- Fits if you want warm-up, list checks and DMARC watched on one bill
- Works for senders on Klaviyo, Shopify or Mailchimp
Look elsewhere if
- Not for you if you want a firm price before a sales call, as only the $49 start is listed
- Pricey if you're warming a single inbox, at $49 against $15 to $20 elsewhere
- Tight if a team shares it, as members draw on one plan's mailbox quota
- Watch out: no yearly discount or plan tiers are listed, and larger needs go through a demo
How we grade them
| 2.2GPAWarmblyFair | 2.4GPAWarmyFair | |
|---|---|---|
| Value for money | CStarter is $23 a month billed yearly ($29 monthly), which is the category's middle figure. It covers 150 cold emails a day. | CFrom $49 a month, priced by warm-up volume rather than per inbox, with no yearly discount listed. Among its listed warm-up rivals that's above Warmup Inbox ($15) and MailReach ($20) for one inbox but under InboxAlly ($149), and list checks and DMARC monitoring come with it. |
| Free plan and trial | C14-day trial with no card. There is no free plan. | CNo free plan, but a 7-day trial of any package with no card, and every feature is open during it. |
| Features | CWarmup, campaigns, unified inbox, placement tests, CRM and lead finder. The CRM and API need Grow ($71), and each mailbox defaults to 50 sends a day. | BIt covers all three jobs on every plan: warm-up with business or consumer inboxes, a rotating US seed list, list checks and DMARC monitoring, plus placement tests, Postmaster data and an AI co-pilot that suggests fixes. |
| Ease of use | CNo rating on record. You connect mailboxes, set up warmup and build campaigns, and self-hosting is an option. | CNo App Store rating on record. There's a lot to take in, from warm-up volume to DNS records and seed tests. The AI co-pilot reads your data and suggests what to fix. |
| Platforms and integrations | BWeb app with four listed integrations, an API and webhooks from Grow. No desktop or phone app. | BWeb and a Chrome extension, with Klaviyo, Shopify, Mailchimp, HubSpot, SendGrid, Amazon SES and Google Postmaster Tools, a documented API, and Zapier, n8n and Make. No phone or desktop app. |
| Best for | cold email sending with mailbox warmup in one place | warm-up, list checks and DMARC in one plan |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Warmbly and Warmy. How we grade
Price against what you get
Warmbly starts at $23 a month and scores 2.3 out of 4 on features, ease of use and platforms. Warmy starts at $49 a month and scores 2.7.
Warmy scores higher, and starts $26 a month higher: the question is whether the extra is worth that to you. Of the other email verification and deliverability tools on the chart, 7 score higher than Warmbly for less, and none scores higher than Warmy for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Warmbly is open source and self-hostable, according to its own site.
- Warmbly also covers workflow automation.
- Warmy also covers email verification and dMARC.
At a glance
| Warmbly | Warmy | |
|---|---|---|
| Pricing | Free trial | Free trial |
| Starts at | $23 per month, billed yearly ($29 billed monthly) | $49 per month and up |
| Free plan | None | None |
| Free trial | 14-day free trial, no credit card | 7-day free trial of any package, no credit card required |
| Web | ||
| Browser extension | ||
| Made by | Warmbly | Warmy.io |
| Price read from | warmbly.com | warmy.io |
| Checked | Nov 13, 2026 | Oct 18, 2026 |
Worth knowing
Warmbly
- Plans are capped by cold emails a day, with each mailbox limited to 50 a day by default.
- The CRM and API need Grow or above, and team roles and audit log need Business.
- Self-hosted warmup uses only the mailboxes you connect, not the cloud's shared pool.
- Agency plans pool sends across clients; top-up packs of 50,000 sends cost $85 (Agency) or $60 (Agency Pro).
Warmy
- The pricing page gives only a starting price of $49 a month; the real cost depends on warm-up volume.
- Plans are priced by warm-up volume, not per inbox, and team members share the plan's mailbox quota.
- The vendor lists no annual discount or plan tiers on the page; larger needs go through a demo.
Key features
Warmbly
- Mailbox warmup
- Warmup is unlimited on every paid plan and runs in a shared premium pool, ramping each mailbox's daily volume over time.
- Campaigns and unified inbox
- Sequences with follow-ups, branching and A/B tests send across mailboxes, and every reply lands in one inbox with labels.
- Inbox placement tests
- Analytics cover sends, replies, bounces and placement tests, and the dashboard shows a health score for each connected mailbox.
- CRM, lead finder and automations
- A built-in CRM tracks deals and tasks, a lead finder searches OpenStreetMap, and automations act when a reply arrives.
- Self-hosting
- The platform is Apache 2.0 licensed and can run on your own server, where warmup uses only the mailboxes you connect.
Warmy
- Warm-up network
- Domains and IPs warm up with real business or consumer mailboxes, sending during working hours in the recipient's time zone.
- US seed list
- More than 500,000 US seed mailboxes, rotated monthly, open and reply to your sends and move them out of spam.
- Verification and DMARC tracker
- List verification and SPF, DKIM and DMARC monitoring are included on every plan, with the exact record to change.
- Adeline AI co-pilot
- Reads your tests, DNS and warm-up data and suggests what to fix; a template optimizer scores emails and rewrites parts that trigger spam filters.
- Reputation and Postmaster data
- Tracks domain and IP reputation with blacklist alerts, and pulls Google Postmaster data in beside warm-up results.
- API and automation
- A documented API covers every feature, with n8n, Zapier and Make for automation and a Chrome extension for checking templates.
Plans
Warmbly
Starter$23
per month, billed yearly ($29 billed monthly)
150 cold emails a day, up to 4,500 a month; unlimited mailboxes and warmup, community support.
Grow$71
per month, billed yearly ($89 billed monthly)
3,000 cold emails a day, up to 90,000 a month; adds CRM, API and webhooks, email support.
Business$263
per month, billed yearly ($329 billed monthly)
15,000 cold emails a day, up to 450,000 a month; team roles, audit log, priority support.
Agency$199
per month, billed yearly ($249 billed monthly)
150,000 sends a month shared by unlimited clients, with a white-label portal and $10 of shared AI.
Agency Pro$479
per month for 500,000 sends, billed yearly ($599 billed monthly)
Full white-label; 500,000 sends a month shared by every client, $30 of shared AI.
EnterpriseCustom
Over 15,000 cold emails a day, custom contract and dedicated support; sold through sales.
Warmy
B2B sender$49
per month and up
Warm-up inside a network of Google Workspace and Microsoft 365 business mailboxes; the price follows the warm-up volume you need.
B2C sender$49
per month and up
Warm-up inside consumer mailboxes at Gmail, Yahoo and Outlook; the price follows the warm-up volume you need.
Custom planCustom
A plan designed with Warmy's team around your volume and providers, with a dedicated success manager.
Ways to pay less
Warmbly
- Annual discount
20% off yearly billing
The pricing page shows a Save 20% toggle for yearly billing, for example Starter at $23 instead of $29 a month.
Warmy
No public discounts listed.
Common questions
Which is cheaper, Warmbly or Warmy?
As of Nov 13, 2026, Warmbly is cheaper to start with: $23 a month, against $49 a month for Warmy. Warmbly starts at $23 per month, billed yearly ($29 billed monthly), and Warmy starts at $49 per month and up.
Which has a free plan, Warmbly or Warmy?
As of Nov 13, 2026, neither Warmbly nor Warmy has a free plan. Both have a free trial.
Which platforms do Warmbly and Warmy run on?
As of Nov 13, 2026, only Warmy lists a browser extension. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.