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MailStrike

mailstrike.ai

From $3.75/mo Free trial WebAPI
Visit mailstrike.ai
Spec score 8.1 #11 of 24 in Email Warmup Software

What it is

MailStrike is an email deliverability platform for mailbox warming, placement testing, and seed lists for B2C senders. AI personas create and reply to email threads using a company's description and industry. Its warming network exchanges threads among business mailboxes while excluding spammers, free-mail senders, and dodgy sites. On connection, the service 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 and then continues at a maintenance volume. Seed lists monitor placement and can interact with messages; setup requires 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 runs on the web and through an API. Paid plans start at $18/mo (annual); there is no free plan, but a free trial is available.

Spec sheet

Product
MailStrike is an AI-powered email deliverability platform providing mailbox warming, seed lists for B2C senders, and placement tests.Read 1 Oct 2026 · mailstrike.ai
Headquarters
Kraków, PolandRead 28 Sep 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
Authentication checks
MailStrike checks SPF, DKIM, DMARC, and MX records when a mailbox is connected and returns the exact missing record value to publish.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
Free test
The Free Deliverability Test reports inbox, promotions, or spam placement per provider and scores spam signals before sending, with no card required.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
Mailbox connections
Google Workspace and Microsoft 365 connect through one-click OAuth, while other providers use IMAP and SMTP with an app password.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
Setup
The company says mailbox connection takes under two minutes, requires nothing to install, and leaves existing sending tools unchanged.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
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.Read 1 Oct 2026 · mailstrike.ai
Warming network
MailStrike exchanges real threads among real business mailboxes and excludes spammers, free-mail senders, and dodgy sites from its network.Read 1 Oct 2026 · mailstrike.ai

Plans and prices

Growth $45 a year Billed annually, two months free Up to 6 mailboxes · 12 placement tests/month · 5,400 warming emails/month · AI persona · Google, Microsoft, or SMTP connect · dashboard and delivery analytics Read 1 Oct 2026 · mailstrike.ai
Professional $92 a year Billed annually, two months free Up to 20 mailboxes · 40 placement tests/month · 18,000 warming emails/month · AI persona · Google, Microsoft, or SMTP connect · dashboard and delivery analytics Read 1 Oct 2026 · mailstrike.ai
Solo $216 a year $216.00 per mailbox per year (= $18.00 per mailbox/month, billed annually) 1 mailbox · 1 placement test/month · 900 warming emails/month · AI persona · Google, Microsoft, or SMTP connect · dashboard and delivery analytics Read 5 Oct 2026 · mailstrike.ai
Custom Priced on request Priced to your volume Unlimited mailboxes · custom test allowance · custom warming volume · API access · onboarding with the team Read 1 Oct 2026 · mailstrike.ai
Seed Lists Priced on request Priced by seed volume; no warming plan required Under 5,000 seeds/month · Gmail and Outlook placement · mix-in or pre-send modes · CSV export Read 1 Oct 2026 · mailstrike.ai

Every MailStrike plan and price →

Strong points and limits

Strong points

  • Checks SPF, DKIM, DMARC, and MX records.
  • Google Workspace and Microsoft 365 connect through OAuth.
  • Warming reaches full volume by day 21.
  • Free deliverability test requires no card.

Limits

  • No free plan is listed.
  • Seed lists require a DNS TXT record.
  • Solo is limited to one mailbox.

Who it suits

It suits founders starting outreach, cold outreach teams, and senders trying to recover from spam placement or scale to new domains. B2C senders can also use its seed lists.

Verdict

MailStrike combines mailbox warming, placement testing, and seed-list tools, with allowances varying by plan. Its free test offers a way to check placement without a card, while paid use requires a plan or separately priced seed lists.

Where Specifiction places it

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