EmailGuard vs Warmbox (2026): which should you pick?
As of Nov 12, 2026, EmailGuard grades higher than Warmbox: 2.0 against 1.8 out of 4.0.
Checked Nov 12, 2026 · graded Nov 12, 2026 by ToolGPA
EmailGuard grades higher on the free plan and features. Warmbox grades higher on value for money and platforms. They get the same grade on ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
EmailGuard
Email deliverability monitoring and domain masking for cold email
Which one is for you
Pick EmailGuard if
- Fits if you send cold email from a few domains and want them watched
- Works for agencies sitting this beside Instantly or Smartlead
Look elsewhere if
- Skip it if you need to send campaigns, because it doesn't
- Tight if you run many domains: free stops at 1 domain and 3 mailboxes
- Watch out: blacklist checks run weekly on every plan
- Pricey if you want redirects: a dedicated IP costs $100 a month extra
Pick Warmbox if
- Fits if you send cold email from one or two new mailboxes and want a warm-up run in the background
- Works for agencies that connect many client inboxes and will ask for a custom plan
Look elsewhere if
- Skip it if you want a free try, because there is no trial or free plan
- Tight if you run more than 6 inboxes, as plans stop there and larger setups are custom
- Pricey if you add inboxes: $15 for 1 inbox becomes $69 for 3
- Watch out: the vendor says warm-up usually needs 15 to 30 days of uninterrupted running before results show
- Watch out: the pricing page doesn't say which billing period each of its two price sets applies to
How we grade them
| 2.0GPAEmailGuardFair | 1.8GPAWarmboxWeak | |
|---|---|---|
| Value for money | CPro is $49 a month for 25 domains, which is the top of the category's dearer quarter ($50). A dedicated redirect IP is another $100 a month. | B$15 a month for 1 inbox is inside the cheapest quarter of cold outreach tools ($25), but the 3-inbox plan is $69 and 6 inboxes is $139. The page's other billing toggle shows $19. |
| Free plan and trial | CFree plan: 1 domain, 3 email accounts, 50 verification credits and weekly blacklist checks. A cap you will hit if you run more than a couple of domains. | FNo free plan and no trial is listed. A free blacklist and DNS checker is the only free part. |
| Features | CSPF, DKIM, DMARC, blacklists, placement tests and verification. It does that job fully, but it's a smaller job and not a sender. | DIt warms inboxes with automated traffic, profiles and monitoring. It does not find leads or send campaigns, so it needs a sending tool next to it. |
| Ease of use | CNo store rating on record. A web dashboard where you connect each domain and mailbox. | CNo store rating on record. You connect each mailbox and pick a warm-up profile, which is a bit of setup per inbox. |
| Platforms and integrations | CWeb only, and the listing names no integrations. | BWeb only, but it works with Gmail, Google Workspace, Microsoft 365, Yahoo, SendGrid, Mailgun, Amazon SES and Zoho inboxes. |
| Best for | checking the health of cold-email domains | warming up a single cold-email inbox |
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: EmailGuard and Warmbox. How we grade
Price against what you get
EmailGuard starts at $49 a month and scores 2.0 out of 4 on features, ease of use and platforms. Warmbox starts at $15 a month and scores 2.0.
They score the same, and Warmbox starts $34 a month lower. Of the other cold outreach tools on the chart, 21 score higher than EmailGuard for less, and 1 scores higher than Warmbox 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
- EmailGuard also covers email verification and dMARC.
- Warmbox also covers reports and inbox warm-up.
At a glance
| EmailGuard | Warmbox | |
|---|---|---|
| Pricing | Free plan | Paid |
| Starts at | $49 per month | $15 per month for 1 inbox (the page's other billing toggle shows $19) |
| Free plan | 1 connected domain, 3 email accounts, 50 contact verification credits a month and weekly blacklist monitoring. No domain masking proxies or hosted redirects. | None |
| Free trial | None listed | None listed |
| Web | ||
| Made by | EmailGuard | Warmbox |
| Price read from | emailguard.io | warmbox.ai |
| Checked | Nov 12, 2026 | Nov 12, 2026 |
Worth knowing
EmailGuard
- The free plan covers a single domain and three email accounts, and has no domain masking proxies or hosted redirects.
- A dedicated redirect IP costs $100 a month extra on every paid plan.
- Automated blacklist checks run weekly on every plan, and the page shows no yearly price.
- It does not send campaigns, so it sits beside an outreach tool.
Warmbox
- The pricing page does not state which billing period each of its two price sets applies to; the default view shows $15 for Solo and the other toggle shows $19.
- Plans are sized by the number of inboxes (1, 3 or 6) and by emails a day, so larger setups need a custom plan.
- The vendor says warm-up usually takes 15 to 30 days of uninterrupted warming before results show.
- It warms mailboxes only; it does not send campaigns or find leads.
Key features
EmailGuard
- Authentication records
- Connects a domain and monitors its SPF, DKIM and DMARC records, with lookup and generator tools for missing records.
- DMARC monitoring
- Aggregates DMARC reports with a history of passes and fails and a list of sending sources. Unlimited DMARC monitoring is on the paid plans.
- Blacklist monitoring
- Watches domains, IP addresses and sending servers and gives delisting details. Automated checks run weekly, with ad-hoc checks on top.
- Inbox placement tests and spam checks
- Ad-hoc or scheduled placement tests across major email providers, an email tester and a content spam checker.
- Domain masking proxy and hosted redirects
- Masks a primary domain behind secondary domains on shared IPs, with a dedicated IP available for $100 a month extra.
- Contact verification
- Real-time email validation and list cleaning to cut bounce rates, sold as monthly credits.
Warmbox
- Automated warm-up traffic
- Sends and answers messages with a private inbox network, marks them as favorites and removes them from spam.
- Warm-up profiles
- Growth, flat or random volume patterns, a warm-up schedule and fully custom settings.
- Realistic content
- The page says replies are written to look human, using GPT-4 and a hybrid approach.
- Checks and monitoring
- A live email checker for DNS and blacklists, spam score monitoring and a reporting dashboard.
- Many inbox types
- Gmail and Google Workspace by OAuth, Microsoft 365, Yahoo, iCloud, AOL, Zoho, SendGrid, Mailgun, Amazon SES and any SMTP mailbox.
- Agency use
- Multi-account support for agencies and team members on every plan.
Plans
EmailGuard
Free$0
1 connected domain, 3 email accounts and 50 contact verification credits, with credits resetting monthly.
Pro$49
per month for up to 25 connected domains
100 email accounts, 3,000 contact verification credits, 300 inbox placement tests and 10 domain masking proxies or hosted redirects.
Business$129
per month for up to 75 connected domains
300 email accounts, 20,000 contact verification credits, 500 inbox placement tests and 25 domain masking proxies or hosted redirects.
Agencies$199
per month for up to 200 connected domains
1,000 email accounts, 50,000 contact verification credits, 1,500 inbox placement tests and 120 domain masking proxies or hosted redirects.
Warmbox
Solo$15
per month for 1 inbox, billing basis unclear
1 inbox warmed at up to 50 emails a day, 1 member and premium support. The page's other toggle lists $19.
Start-up$69
per month for 3 inboxes, billing basis unclear
3 inboxes at up to 250 emails a day, 3 team members and premium support. The other toggle lists $79.
Growth$139
per month for 6 inboxes, billing basis unclear
6 inboxes at up to 500 emails a day, 6 team members and enterprise support. The other toggle lists $159.
TeamCustom
Custom plans for larger sending volumes, quoted through the vendor's chat.
Common questions
Which is cheaper, EmailGuard or Warmbox?
As of Nov 12, 2026, Warmbox is cheaper to start with: $15 a month, against $49 a month for EmailGuard. EmailGuard starts at $49 per month, and Warmbox starts at $15 per month for 1 inbox (the page's other billing toggle shows $19).
Which has a free plan, EmailGuard or Warmbox?
As of Nov 12, 2026, only EmailGuard has a free plan. Warmbox does not.
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.