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AuthSMTP vs MailBaby (2026): which should you pick?

As of Nov 13, 2026, MailBaby grades higher than AuthSMTP: 2.0 against 1.8 out of 4.0.

Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA

AuthSMTP grades higher on ease of use. MailBaby grades higher on value for money and platforms. They get the same grade on the free plan and features.

Price, platforms and features side by side. The table says where each price was read and when.

AuthSMTP

Authenticated outgoing SMTP relay, billed by the year

From $72/yr
Full detailsauthsmtp.com

MailBaby

Outbound SMTP smart host that filters spam from your servers

From $1/mo
Full detailsmail.baby

Which one is for you

Pick AuthSMTP if

  • Fits if you want to send from your own domain through SMTP and need nothing else
  • Works for older apps and devices that can only send through SMTP

Look elsewhere if

  • Not for you if you want to try it free, because there is no free plan or trial
  • Skip it if you want a campaign builder or marketing tools, as it is an SMTP relay only
  • Watch out: pricing is by the year only, charged up front
  • Watch out: the 14-day money-back guarantee covers only new card or PayPal accounts and ends after 100 messages
  • Tight if you send big files: data allowances assume an average message of 300 KB

Pick MailBaby if

  • Fits if you run a web host or servers and want to stop outgoing spam leaving them
  • Works for sites sending small volumes, where $1 a month plus usage is enough

Look elsewhere if

  • Skip it if you want to send marketing, cold email or lists: the FAQ says it isn't designed for them
  • Skip it if you want a free plan or trial, as there isn't one
  • Not for you if you want DKIM for your own domain handled for you: it signs only its own hostname
  • Watch out: blocked messages are billed at the same $0.20 per 1,000 as delivered ones
  • Watch out: the FAQ lists restricted business types

How we grade them

1.8GPAAuthSMTPWeak2.0GPAMailBabyFair
Value for money
B$72 a year for 2,000 emails a month works out to $6 a month, inside the cheapest quarter of email sending tools. It is billed yearly, and 10,000 emails a month is $216 a year.
A$1 a month plus $0.20 per 1,000 emails, which works out to about $3 for 10,000. That's under 60% of what the cheaper quarter of email sending tools starts at.
Free plan and trial
FNo free plan and no trial. A 14-day money-back guarantee is not a trial, and it ends after 100 messages sent or an upgrade.
FNo free plan or trial. The $1 a month is there to keep the account active.
Features
CIt does one job: authenticated SMTP sending, with several from addresses, a control panel, logs and scanning. It is a smaller job, and it does that job fully.
CSpam and malware filtering, SMTP login, an API and WordPress plugin, unlimited servers, IP reputation handling and delivery logs. It's SMTP only and does one narrow job.
Ease of use
CA web control panel with no rating on record. You enter SMTP credentials into whatever sends your mail.
DNo store rating on record. You point your server at it, need SPF, and must do DKIM for your own domain on your server, and STARTTLS is required.
Platforms and integrations
CWeb control panel only, with no integrations listed on the pages read.
BWeb account with an API, a WordPress plugin and connections for cPanel, Plesk, hMail and Webuzo.
Best forsending from an app or device through SMTPscanning the outgoing mail from your servers

The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: AuthSMTP and MailBaby. How we grade

Price against what you get

AuthSMTP starts at $6 a month when paid by the year and scores 2.0 out of 4 on features, ease of use and platforms. MailBaby starts at $1 a month and scores 2.0.

They score the same, and MailBaby starts $5 a month lower. Of the other email sending services on the chart, 3 score higher than AuthSMTP for less, and 1 scores higher than MailBaby for less.

Features, ease of use and platforms, averaged

D1.0C2.0B3.0A4.0Free$1$2$5$10$20$50$100$200$500$1kMore for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessAuthSMTPMailBaby

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of email sending services, and the best at every price

Where they differ

    In commonWebPublic APITransactional email

    At a glance

    AuthSMTPMailBaby
    PricingPaidPaid
    Starts at$72 per year for 2,000 emails a month$1 per month, plus $0.20 per 1,000 emails sent
    Free planNoneNone
    Free trialNone listedNone listed
    Web
    Made byGetOnline LtdMail Baby
    Price read fromauthsmtp.commail.baby
    CheckedNov 12, 2026Nov 13, 2026

    Worth knowing

    AuthSMTP

    • Pricing is by the year only, and no free plan or trial is offered.
    • The 14-day money-back guarantee ends after 14 days, after 100 messages sent or after an upgrade, and covers new card or PayPal accounts only.
    • It is an SMTP relay without a campaign builder or marketing tools.
    • Data allowances are calculated on an average message size of 300 KB, which the pricing page lets you change.

    MailBaby

    • The FAQ says it is not designed for email marketing, cold email or lists, and lists a number of restricted business types.
    • Blocked messages are billed at the same $0.20 per 1,000 as delivered ones; deny rules for blocked mail are free up to 1,000,000 messages.
    • SPF is required, and MailBaby signs only its own transport hostname, so DKIM for your domain must be done on your own server.
    • STARTTLS is required to connect, and the product is SMTP only: the FAQ says it does not offer installation services.

    Key features

    AuthSMTP

    Authenticated SMTP
    Sends from any application through an authenticated SMTP server, with SSL or TLS, alternative ports and multiple concurrent connections.
    Multiple from addresses and domains
    Each account allows a set number of from addresses or domains, from 20 on the smallest to 600 on the larger accounts.
    Flexible quota upgrades
    The site says an account can be boosted in a month as usage grows, with no automatic payments.
    Control panel and logs
    An online control panel shows account status and logged errors. A separate REST API is described, with message submission in beta.
    Security and scanning
    Messages are virus-scanned, with sender-domain validation and SPF and DKIM support. The site says it maintains PCI DSS compliance.

    MailBaby

    Outbound spam and malware filtering
    Mail is analyzed on its way out; spam is blocked, and the FAQ says bounce messages are understood and acted on.
    SMTP username and password
    Setup is a smart-host configuration on your own mail server using a username and password, with guides for cPanel, Plesk, hMail and Webuzo.
    API and WordPress plugin
    The site links to an API guide and lists a WordPress plugin among the ways to send.
    Unlimited servers
    There is no per-server charge, so any number of servers can share one account.
    IP reputation handling
    The vendor says it monitors its sending IPs for blacklists and works with mailbox providers through feedback loops.
    Delivery logs
    The FAQ says it logs sender, recipient, subject and spam-scan results for 60 days, and does not keep the body after delivery.

    Plans

    AuthSMTP

    • AuthSMTP 2$72

      per year for 2,000 emails a month

      20 from addresses or domains, 600 MB of data a month, shared IP address.

    • AuthSMTP 4$108

      per year for 4,000 emails a month

      40 from addresses or domains, 1.2 GB of data a month, shared IP address.

    • AuthSMTP 10$216

      per year for 10,000 emails a month

      100 from addresses or domains and 3 GB of data a month. Steps of 6, 8 and 15 sit between the larger ones.

    • AuthSMTP 20$336

      per year for 20,000 emails a month

      200 from addresses or domains and 6 GB of data a month.

    • AuthSMTP 50$450

      per year for 50,000 emails a month

      500 from addresses or domains and 15 GB of data a month; the table marks a dedicated IP as available from this size.

    • AuthSMTP 100$870

      per year for 100,000 emails a month

      600 from addresses or domains and 30 GB of data a month. Larger accounts continue past 1 million a month.

    MailBaby

    • Pay as you go$1

      per month, plus $0.20 per 1,000 emails

      One account for unlimited servers. The $1 keeps the account active; blocked messages count toward the per-1,000 charge.

    Common questions

    Which is cheaper, AuthSMTP or MailBaby?

    As of Nov 13, 2026, MailBaby is cheaper to start with: $1 a month, against $6 a month when paid by the year for AuthSMTP. AuthSMTP starts at $72 per year for 2,000 emails a month, and MailBaby starts at $1 per month, plus $0.20 per 1,000 emails sent.

    Which has a free plan, AuthSMTP or MailBaby?

    As of Nov 13, 2026, neither AuthSMTP nor MailBaby has a free plan.

    More comparisons

    How this page was made

    • The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
    • The grades are our own, from each tool’s review or report card. The GPA is their average.
    • Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
    • The differences and the answers to the questions are worked out from those listings.
    How we review and grade