Mailwarm

Spec sheet

What it does

Mailwarm automates email warmup and deliverability work to improve sender reputation and inbox placement.Read 15 Oct 2026 · mailwarm.com

Integrations

Official pages list Gmail, Outlook or Office 365, Yahoo, Zoho, SendGrid, Mailgun and other SMTP services.Read 15 Oct 2026 · mailwarm.com

Support

Every plan includes deliverability expertise, with plan-specific expert calls or on-demand calls listed on the pricing page.Read 8 Oct 2026 · mailwarm.com

Account connection

Mailwarm says its OAuth connections do not require password sharing; it also says no IMAP access is required on its pricing page.Read 8 Oct 2026 · mailwarm.com

Authentication checks

Mailwarm checks SPF, DKIM, DMARC, SMTP and IMAP configuration and detects blacklist listings.Read 15 Oct 2026 · mailwarm.com

Automated warmup

The service automates warmup across Gmail, Outlook, Microsoft 365, Yahoo, and SMTP, with progressive volume ramp-up and scheduling.Read 8 Oct 2026 · mailwarm.com

Bounce prevention

Mailwarm advertises email verification, invalid-address detection and bounce prevention to protect domain reputation.Read 15 Oct 2026 · mailwarm.com

Company founding

Y Combinator lists Mailwarm as founded in 2020 and part of its Summer 2020 batch.Read 15 Oct 2026 · ycombinator.com

Company location

Y Combinator lists the company location as Dubai, United Arab Emirates.Read 15 Oct 2026 · ycombinator.com

Company team size

Y Combinator lists a team size of 10.Read 15 Oct 2026 · ycombinator.com

Connection method

Gmail and Outlook connections use OAuth, while custom SMTP servers are supported; the pricing page says IMAP access is not required.Read 15 Oct 2026 · mailwarm.com

Content warmup

Users can supply their own email templates so warmup resembles their real campaign content and sending patterns.Read 15 Oct 2026 · mailwarm.com

Developer and self-hosting availability

Palisade reports that Mailwarm's published materials describe a commercial service but provide no open-source licence, public repository or self-hosted deployment.Read 15 Oct 2026 · palisade.email

Engagement actions

Warmup interactions can include opens, replies, moving messages from spam, and marking messages as important.Read 8 Oct 2026 · mailwarm.com

Engagement network

The feature page says Mailwarm uses more than 50,000 real inboxes across Gmail, Outlook, Yahoo and Microsoft 365 for opens, replies and conversations.Read 15 Oct 2026 · mailwarm.com

Free tools

The site offers a free email spam checker, while describing the email warmup service as having no traditional free trial.Read 8 Oct 2026 · mailwarm.com

Funding and acquisition

Crunchbase lists Mailwarm as seed-funded, acquired by mailX and headquartered in Paris, France, with a 1–10 employee range.Read 15 Oct 2026 · crunchbase.com

Gmail setup

The Gmail guide instructs users to create a campaign, sign in with Google and grant permission for Mailwarm to send messages.Read 15 Oct 2026 · help.mailwarm.com

Help documentation

The help center includes onboarding, troubleshooting, Gmail or Google Workspace, Mailgun SMTP, generic SMTP and launch-guide articles.Read 15 Oct 2026 · help.mailwarm.com

Human-like actions

Its engagement automation includes replies, archive actions, important marking, variable delays and conversation threads.Read 15 Oct 2026 · mailwarm.com

Infrastructure

The terms identify Amazon Web Services as Mailwarm's technical infrastructure provider.Read 15 Oct 2026 · mailwarm.com

Infrastructure checks

Mailwarm lists SPF, DKIM, and DMARC validation, blacklist detection, and SMTP and IMAP configuration checks.Read 8 Oct 2026 · mailwarm.com

Legal company

The service agreement identifies the provider as COMUSE SAS, registered at 57 avenue de Bretagne, Rouen, France, registration 849350780.Read 15 Oct 2026 · mailwarm.com

Licence

The terms grant only a limited proprietary use licence and prohibit copying, modification, reverse engineering and mirroring.Read 15 Oct 2026 · mailwarm.com

Limit: Capterra integrations and UI

Older Capterra reviews report that only SMTP or Gmail worked at the time, wanted faster integration delivery and roadmap updates, and found the UI/UX improvable.Read 15 Oct 2026 · capterra.com

Limit: G2 reporting and control

G2 reviewers repeatedly ask for deeper analytics, more mailbox-performance detail, more customization and provider-specific controls; one calls the service expensive and another says warmup can feel slow.Read 15 Oct 2026 · g2.com

Limit: Trustpilot access and cancellation

A Trustpilot reviewer says signup credentials never arrived, support did not respond and cancellation was impossible because the account could not be accessed.Read 15 Oct 2026 · trustpilot.com

Monitoring

Mailwarm offers spam score and inbox placement monitoring, including provider-level insights and early issue detection.Read 8 Oct 2026 · mailwarm.com

Multi-inbox management

The platform centralizes multiple inboxes, domains, campaigns and team access.Read 15 Oct 2026 · mailwarm.com

Notable news

LinkedIn reports that Thami Benjelloun became Mailwarm CEO after an acquisition process announced in 2025.Read 15 Oct 2026 · linkedin.com

Praise: Capterra simplicity

Capterra reviewers commonly describe the interface as straightforward, clean and easy to start, with simple SMTP setup and effective warming.Read 15 Oct 2026 · capterra.com

Praise: G2 usability

G2 reviewers repeatedly praise quick setup, easy automation, background operation and improved inbox placement.Read 15 Oct 2026 · g2.com

Provider warmup

It supports automated warmup for Gmail, Outlook, Microsoft 365, Yahoo and SMTP with progressive volume increases and human-like scheduling.Read 15 Oct 2026 · mailwarm.com

Rating on Capterra

4.9 out of 5 from 8 reviewsRead 15 Oct 2026 · capterra.com

Rating on G2

3.7 out of 5 from 14 reviewsRead 15 Oct 2026 · g2.com

Rating on Software Advice

4.9 out of 5 from 8 reviewsRead 15 Oct 2026 · softwareadvice.com

Rating on Trustpilot

3.1 out of 5 from 2 reviewsRead 15 Oct 2026 · trustpilot.com

Security and privacy

Mailwarm says it follows GDPR, stores user data in Europe, encrypts payment information through Stripe and collects SMTP credentials to send mail on a user's behalf.Read 15 Oct 2026 · mailwarm.com

Spam monitoring

The product monitors spam scores and inbox placement by provider and tracks reputation trends.Read 15 Oct 2026 · mailwarm.com

Trial and cancellation

Mailwarm says it does not offer a traditional free trial and that subscriptions can be canceled at any time.Read 8 Oct 2026 · mailwarm.com

Warmup network

Mailwarm says its engagement network contains 50,000+ real email accounts across Gmail, Outlook, Yahoo, and Microsoft 365.Read 8 Oct 2026 · mailwarm.com

Who it is for

Mailwarm identifies sales and outbound teams, founders launching domains, agencies managing inboxes, and businesses recovering from spam placement as users it serves.Read 8 Oct 2026 · mailwarm.com

Plans and prices

Every Mailwarm plan and price →

Where Specifiction places it

• Email Outreach Software#8 of 348.3
• Email Warmup Software#7 of 248.3