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MailerZ

Free plan APIWeb

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MailerZ's own site

What MailerZ is

MailerZ handles email for verified custom domains, forwarding incoming messages to existing inboxes and sending through authenticated SMTP. Setup involves proving domain ownership, pointing MX records to MailerZ, adding aliases and destinations, and connecting SMTP. Forwarded messages retain the visible original sender name and address while the envelope is rewritten. Its hosted Mail Box has Inbox, Sent, and New email, as well as held and forwarded streams. Delivery records show whether mail was forwarded, held, bounced, or rejected, with codes and explanations. The service works with Gmail, Outlook, Apple Mail, Thunderbird, websites, and applications that support SMTP. Message recovery lasts 14 days on Free, 90 days on paid plans except Unlimited, and 180 days on Unlimited. The Free plan includes one domain and three aliases, but sending, SMTP, and API are disabled; unrouted mail is held or rejected. MailerZ is not an IMAP or POP mailbox host, permanent archive, campaign sender, or Gmail replacement. Paid plans start at $3.33/mo (annual).

Who it suits

MailerZ suits personal-domain owners, founders, small businesses, support teams, agencies, and multi-domain teams that need forwarding or authenticated SMTP sending. It is not intended as a full mailbox host, archive, campaign sender, or Gmail replacement.

What it does well

  • Forwards mail from verified custom domains.
  • Keeps the original sender visible on forwarded messages.
  • Delivery logs include outcomes, codes, and explanations.
  • Works with common mail clients and SMTP-enabled apps.

What to know first

  • Free plan disables sending, SMTP, and API.
  • Free message storage lasts 14 days.
  • Not an IMAP or POP mailbox host.
  • Not SOC 2, ISO 27001, or HIPAA certified.

Limits

Free includes one domain, three aliases, one seat, and 14-day message retention; sending, SMTP, and API are disabled. Solo includes three domains, 15 aliases, one seat, 1,000 outgoing emails per month, and 90-day retention; it allows five outgoing emails per hour. Paid plans other than Unlimited retain messages for 90 days, while Unlimited retains them for 180 days.

Plans

PlanBilled and limitsPrice
FreeIncluded at signup · 1 domain · 3 aliases · 14-day message store · 1 seat · send-as disabled · SMTP disabled · API disabled · unrouted mail hold or rejectFree
BusinessMonthly or yearly; annual billing includes two months free · 25 domains · 200 aliases · 90-day message store · 25 seats · 4,000 outgoing emails/month · 15 outgoing emails/hour · SMTP and API enabled$19,190 a month
AgencyMonthly or yearly; annual billing includes two months free · 100 domains · 500 aliases · 90-day message store · 50 seats · 8,000 outgoing emails/month · 25 outgoing emails/hour · SMTP and API enabled$39,390 a month
SoloBilled yearly; annual only · 3 domains · 15 aliases · 90-day message store · 1 seat · 1,000 outgoing emails/month · 5 outgoing emails/hour · SMTP and API enabled$40 a year
StarterMonthly or yearly; annual billing includes two months free · 5 domains · 50 aliases · 90-day message store · 5 seats · 2,000 outgoing emails/month · 10 outgoing emails/hour · SMTP and API enabled$880 a month
UnlimitedMonthly or yearly; annual billing includes two months free · Unlimited domains · unlimited aliases · 180-day message store · unlimited seats · 100,000 outgoing emails/month · 300 outgoing emails/hour · SMTP and API enabled$99,990 a month

As mailerz.net lists them, read 30 Sept 2026. The maker's own page has the final word.

Getting started

  1. Open the MailerZ website and choose a plan.
  2. Verify ownership of your domain.
  3. Point the domain's MX records to MailerZ.
  4. Create aliases and set their destinations.
  5. Connect SMTP for sending on a plan that enables it.

Verdict

MailerZ focuses on custom-domain routing, forwarding, delivery visibility, and authenticated SMTP rather than hosting a conventional mailbox. Check the Free plan limits and retention period before relying on it for sending or recovery.

Questions

Is there a free plan?

Yes. Free includes one domain, three aliases, one seat, and 14-day message retention. Sending, SMTP, and API are disabled.

What is the starting paid price?

Paid plans start at $3.33/mo (annual).

Which platforms does MailerZ support?

The listed platforms are API and web. It also works with Gmail, Outlook, Apple Mail, Thunderbird, websites, and applications that support SMTP.

Does MailerZ host an IMAP or POP mailbox?

No. MailerZ is not an IMAP or POP mailbox host.

Who makes MailerZ?

The listed website is mailerz.net.

How long are recovered messages retained?

Retention is 14 days on Free, 90 days on paid plans except Unlimited, and 180 days on Unlimited.

Facts from MailerZ's own pages

Compliance status
MailerZ states that it is not SOC 2, ISO 27001, or HIPAA certified. · mailerz.net, 30 Sept 2026
Core service
MailerZ is a custom-domain email delivery layer that receives mail for verified domains, forwards it to existing inboxes, and sends through authenticated SMTP. · mailerz.net, 30 Sept 2026
Delivery visibility
The service records whether mail was forwarded, held, bounced, or rejected and stores delivery codes and explanations. · mailerz.net, 30 Sept 2026
DNS setup
Users verify domain ownership, point MX records to MailerZ, create aliases and destinations, and connect SMTP. · mailerz.net, 30 Sept 2026
Hosted webmail
Mail Box at mail.mailerz.net provides Inbox, Sent, and New email plus held and forwarded streams. · mailerz.net, 30 Sept 2026
Message recovery
Recovery retention is 14 days on Free, 90 days on paid plans except Unlimited, and 180 days on Unlimited. · mailerz.net, 30 Sept 2026
Product boundaries
MailerZ is not an IMAP or POP mailbox host, a permanent archive, a campaign sender, or a Gmail replacement. · mailerz.net, 30 Sept 2026
Security controls
Receiving and sending require domain verification, SMTP credentials are scoped to approved identities, and messages are stored before SMTP 250 acceptance. · mailerz.net, 30 Sept 2026
Sender preservation
Forwarded messages retain the visible original From name and address while SRS rewrites only the envelope. · mailerz.net, 30 Sept 2026
Support channels
General support is available at [email protected], with separate security, privacy, abuse, sales, billing, and partnership routes. · mailerz.net, 30 Sept 2026
Supported workflows
MailerZ works with Gmail, Outlook, Apple Mail, Thunderbird, websites, and applications that support SMTP. · mailerz.net, 30 Sept 2026
Target users
The service is aimed at personal domains, founders and small businesses, support teams, agencies, multi-domain teams, and approved websites or apps. · mailerz.net, 30 Sept 2026

Where MailerZ stands on Freedom251

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