MailStrike
MailStrike is an AI-powered email deliverability platform for mailbox warming, placement tests, and seed lists for B2C senders.
What MailStrike is
MailStrike is an AI-powered email deliverability platform for mailbox warming, placement tests, and seed lists for B2C senders. Its AI personas generate and reply to email threads using a company description and industry. The warming network exchanges threads among business mailboxes and excludes spammers, free-mail senders, and suspicious sites. When a mailbox connects, MailStrike checks SPF, DKIM, DMARC, and MX records and identifies missing values. Google Workspace and Microsoft 365 connect through OAuth; other providers use IMAP and SMTP with an app password. Warming reaches full volume by day 21, then continues at a maintenance level. Seed lists can monitor placement and interact with messages, and need one DNS TXT record for domain verification. A free deliverability test reports inbox, promotions, or spam placement and scores spam signals without requiring a card. MailStrike is available on the web and through an API.
Good
- Checks SPF, DKIM, DMARC, and MX records
- Warming reaches full volume by day 21
- Free test reports placement without a card
- Supports multiple mailboxes and custom warmup schedules
- Google Workspace and Microsoft 365 use OAuth
Watch out
- No free plan
- Seed lists require a DNS TXT record
- Daily email limit is 30 /day
Who it suits
MailStrike is aimed at founders starting outreach, cold outreach teams, senders recovering from spam, teams moving to new domains, high-volume senders, and B2C senders. Its mailbox warming and placement checks may suit teams monitoring deliverability while campaigns run.
Verdict
MailStrike combines mailbox warming, authentication checks, placement testing, and seed lists for deliverability work. There is no free plan, but a free trial and a card-free deliverability test are available.
Plans and prices
From MailStrike's own pricing page, checked 1 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Growth | $45 a year | Up to 6 mailboxes · 12 placement tests/month · 5,400 warming emails/month · AI persona · Google, Microsoft, or SMTP connect · dashboard and delivery analytics · Billed annually, two months free |
| Professional | $92 a year | Up to 20 mailboxes · 40 placement tests/month · 18,000 warming emails/month · AI persona · Google, Microsoft, or SMTP connect · dashboard and delivery analytics · Billed annually, two months free |
| Solo | $216 a year | 1 mailbox · 1 placement test/month · 900 warming emails/month · AI persona · Google, Microsoft, or SMTP connect · dashboard and delivery analytics · $216.00 per mailbox per year (= $18.00 per mailbox/month, billed annually) |
| Custom | Priced on request | Unlimited mailboxes · custom test allowance · custom warming volume · API access · onboarding with the team · Priced to your volume |
| Seed Lists | Priced on request | Under 5,000 seeds/month · Gmail and Outlook placement · mix-in or pre-send modes · CSV export · Priced by seed volume; no warming plan required |
The facts
Each one read from MailStrike's own pages, with the date it was checked.
What it does
- AI personas
- Each mailbox receives an AI persona that writes and replies in human-like threads using content generated from the company description and industry.checked 1 Oct 2026
- Authentication checks
- MailStrike checks SPF, DKIM, DMARC, and MX records when a mailbox is connected and returns the exact missing record value to publish.checked 1 Oct 2026
- Compliance and security
- MailStrike displays CASA Tier 2 validation and TAC Security validation on its site and states that its processing supports GDPR rights and legal bases.checked 1 Oct 2026
- Data location and retention
- Product data is processed and backed up in Germany, and deleted or anonymized within 30 days after account deletion except where law requires retention.checked 1 Oct 2026
- Google data protection
- For Google mailboxes, MailStrike says it does not store existing mailbox contents, does not use Google user data to train generalized AI models, and does not transfer that data to third-party AI services.checked 1 Oct 2026
- Mailbox connections
- Google Workspace and Microsoft 365 connect through one-click OAuth, while other providers use IMAP and SMTP with an app password.checked 1 Oct 2026
- Product
- MailStrike is an AI-powered email deliverability platform providing mailbox warming, seed lists for B2C senders, and placement tests.checked 1 Oct 2026
- Ramp and maintenance
- Warming reaches full volume by day 21 and then continues at a maintenance volume so sender reputation remains supported while campaigns run.checked 1 Oct 2026
- Seed-list rescue
- Seed lists monitor campaign placement and can move messages from spam to the inbox, mark them not spam, open them, read them, click links, and mark them important.checked 1 Oct 2026
- Seed-list setup
- Seed lists require one DNS TXT record for domain verification and can be added to any recipient list without API keys, OAuth, or installation.checked 1 Oct 2026
- Setup
- The company says mailbox connection takes under two minutes, requires nothing to install, and leaves existing sending tools unchanged.checked 1 Oct 2026
- Stack compatibility
- MailStrike says it works alongside Gmail, Outlook, Microsoft 365, Zoho Mail, Amazon SES, SendGrid, Mailgun, Postmark, Resend, Mailchimp, Brevo, Klaviyo, Customer.io, HubSpot, Pipedrive, Close, Instantly, lemlist, Smartlead, and Apollo.checked 1 Oct 2026
- Target users
- MailStrike describes use cases for founders starting outreach, cold outreach teams, senders recovering from spam, teams scaling to new domains, high-volume senders, and B2C senders.checked 1 Oct 2026
- Warming network
- MailStrike exchanges real threads among real business mailboxes and excludes spammers, free-mail senders, and dodgy sites from its network.checked 1 Oct 2026
Money
- Free test
- The Free Deliverability Test reports inbox, promotions, or spam placement per provider and scores spam signals before sending, with no card required.checked 1 Oct 2026
The company
- Headquarters
- Kraków, Polandchecked 28 Sep 2026
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