MailStrike

Name: MailStrike
Price: 216 USD

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What MailStrike is

MailStrike is an email deliverability platform for warming mailboxes, checking campaign placement, and supporting B2C senders with seed lists. Its AI personas use a company description and industry to write and reply in email threads. The shared warming network exchanges threads between business mailboxes and excludes spammers, free-mail senders, and dodgy sites. Warming ramps to full volume by day 21, then continues at a maintenance volume while campaigns run.

When a mailbox connects, MailStrike checks SPF, DKIM, DMARC, and MX records and provides missing record values to publish. Google Workspace and Microsoft 365 connect with one-click OAuth; other providers use IMAP and SMTP with an app password. Seed lists monitor placement and can move messages from spam to the inbox, mark them not spam, open and read them, click links, or mark them important. They require a DNS TXT record for domain verification and can be added to recipient lists without API keys or installation. A free deliverability test reports inbox, promotions, or spam placement by provider and scores spam signals before sending. MailStrike runs on web and API, requires nothing to install, and is paid, with a free trial. Its listed starting price is $18/mo (annual).

Who it suits

MailStrike suits founders and outreach teams warming mailboxes, recovering from spam, or scaling to new domains. B2C senders can use seed lists to monitor placement, while high-volume teams can consider its custom plan.

What it does well

AI personas write and reply using company and industry context.
Checks SPF, DKIM, DMARC, and MX records on connection.
Warming reaches full volume by day 21, then maintains volume.
Free placement test requires no card.
Supports multiple mailboxes and custom warmup schedules.

What to know first

There is no free plan.
The shared network has a daily email limit of 30/day.
Seed Lists and Custom plan prices are based on volume.

Limits

There is no free plan. The listed paid tiers cap mailbox counts, placement tests, and warming emails; the Growth plan allows up to 6 mailboxes, 12 placement tests/month, and 5,400 warming emails/month, while Solo allows 1 mailbox, 1 test/month, and 900 warming emails/month. The shared warming network has a 30/day email limit.

Plans

Plan	Billed and limits	Price
Solo	$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	$216 a year
Growth	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	$45 a year
Professional	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	$92 a year
Custom	Priced to your volume · Unlimited mailboxes · custom test allowance · custom warming volume · API access · onboarding with the team	On request
Seed Lists	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	On request

As mailstrike.ai lists them, read 5 Oct 2026. The maker's own page has the final word.

Getting started

Open the MailStrike website and start a free trial or use the free deliverability test.
Choose a plan based on mailbox count and warming or placement needs.
Connect Google Workspace or Microsoft 365 with one-click OAuth, or connect another provider using IMAP and SMTP with an app password.
Review the SPF, DKIM, DMARC, and MX checks and publish any missing record values.
For seed lists, verify the domain with one DNS TXT record and add the list to a recipient list.

Verdict

Choose MailStrike if mailbox warming, authentication checks, and placement monitoring are central to your email workflow. Look elsewhere if you need a free plan or do not want a shared warming network with a 30/day email limit.

Questions

How much does MailStrike cost?

The pricing note says from $18/mo (annual). The Solo plan is $216.00 per mailbox per year, billed annually; Growth is $45 a year and Professional is $92 a year, each billed annually. Custom and Seed Lists are priced by volume.

Does MailStrike have a free plan or trial?

There is no free plan, but a free trial is available. The Free Deliverability Test requires no card and reports placement and spam signals.

Which platforms does MailStrike support?

MailStrike is available on web and through an API. Google Workspace and Microsoft 365 connect through OAuth; other providers connect through IMAP and SMTP with an app password.

What does the Growth plan include?

Growth includes up to 6 mailboxes, 12 placement tests/month, and 5,400 warming emails/month, plus an AI persona, supported mailbox connections, a dashboard, and delivery analytics.

Does MailStrike offer seed lists without a warming plan?

Yes. The Seed Lists plan requires no warming plan and includes under 5,000 seeds/month, Gmail and Outlook placement, mix-in or pre-send modes, and CSV export.

Where is MailStrike based?

MailStrike is headquartered in Kraków, Poland. Product data is processed and backed up in Germany.

Facts from MailStrike's own pages

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. · mailstrike.ai, 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. · mailstrike.ai, 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. · mailstrike.ai, 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. · mailstrike.ai, 1 Oct 2026
Free test: The Free Deliverability Test reports inbox, promotions, or spam placement per provider and scores spam signals before sending, with no card required. · mailstrike.ai, 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. · mailstrike.ai, 1 Oct 2026
Headquarters: Kraków, Poland · mailstrike.ai, 28 Sept 2026
Mailbox connections: Google Workspace and Microsoft 365 connect through one-click OAuth, while other providers use IMAP and SMTP with an app password. · mailstrike.ai, 1 Oct 2026
Product: MailStrike is an AI-powered email deliverability platform providing mailbox warming, seed lists for B2C senders, and placement tests. · mailstrike.ai, 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. · mailstrike.ai, 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. · mailstrike.ai, 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. · mailstrike.ai, 1 Oct 2026
Setup: The company says mailbox connection takes under two minutes, requires nothing to install, and leaves existing sending tools unchanged. · mailstrike.ai, 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. · mailstrike.ai, 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. · mailstrike.ai, 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. · mailstrike.ai, 1 Oct 2026

Where MailStrike stands on Freedom251

Email Warmup Software#16 of 24