SMTP2GO vs SocketLabs (2026): which should you pick?

Pick SMTP2GO if

• Fits if your office printers, scanners or old systems need somewhere to send mail from
• Works for people who look after email for several clients and want subaccounts on a paid plan

Look elsewhere if

• Not for you if your app needs to receive and read incoming email
• Tight if you're staying free, at 1,000 emails a month and 200 a day, with no way to buy more
• Skip it if you only have a Gmail or Yahoo address to sign up with
• Pricey if you need a dedicated IP or email testing, which start with Professional at $75 a month
• Watch out: the free plan keeps 5 days of reports, and chat and phone help stop after 14 days

Pick SocketLabs if

• Fits if you send 40,000 emails or more a month and want delivery analytics
• Works for platforms that need subaccounts and IP pools

Look elsewhere if

• Pricey if you send little, as the cheapest plan is $39.95 a month for 40,000 emails
• Skip it if you want a free plan, because the free first month ends with sending stopped
• Tight if you need a dedicated IP, which starts on Pro at $89.95 a month
• Watch out: Spotlight Analytics is open only to Enterprise-level senders, per its FAQ
• Watch out: Core has one volume step of 40,000 emails; heavier senders move to Pro

SMTP2GO

• The free plan stops at 1,000 emails a month and 200 a day, and extra emails cannot be bought on it.
• A dedicated IP address and email testing tools start with Professional at $75 a month.
• Email reports are kept for 30 days on paid plans and 5 days on the free plan.
• Sign-up asks for an email address at a private domain; Gmail and Yahoo addresses are refused.

SocketLabs

• There is no permanent free plan; the free first month of Core ends with sending stopped unless you upgrade.
• A dedicated IP address and StreamScorePro start on Pro at $89.95 a month.
• Core has one volume step, 40,000 emails; heavier senders move to Pro, which has steps up to 800,000, or to Enterprise.
• Spotlight Analytics is only open to Enterprise-level SocketLabs Email senders at this time, according to its FAQ.

SMTP2GO

SMTP relay and HTTP API

Send through SMTP from an app, a mail client, a server or a device, or through a REST API with code examples in JavaScript, Node.js, PHP, Ruby and Python.

Delivery tracking and reports

Real-time reports follow each email to delivery and show bounces, spam complaints and unsubscribes, with weekly summaries and alerts on sudden bounce rises.

Automatic SPF and DKIM

Domain authentication is handled for you, along with feedback loops, blacklist monitoring and spam trap detection on every plan.

Data centers in three regions

Choose to send from and store data in the US, Europe or Australia, with best-path routing to the nearest location.

Email testing

Professional adds previews in more than 40 email clients and checks against major spam filters before you send.

Subaccounts

Paid plans can split sending into subaccounts, which suits agencies and managed service providers looking after several clients.

SocketLabs

SMTP relay and injection API

Mail can be sent through a standard SMTP connection or the HTTP injection API, with a separate SocketLabs API and event webhooks.

StreamScore reputation score

A color-coded score built from more than 35 internal and external data points. Core gets StreamScoreLite, and Pro gets StreamScorePro.

Subaccounts and IP pools

Subaccounts split mail streams by sender or customer, and IP pool management is listed in the feature table, for teams that route mail by policy.

Rule Engine routing

On Enterprise, the Rule Engine can send mail directly, relay it, or split traffic across several third-party providers.

Spotlight email analytics

A separate analytics product that takes webhook data from SendGrid, Mailgun or Bird and reports on sending activity, with a 30-day proof of concept.

SMTP2GO

• Free Plan$0

  1,000 emails a month and 200 a day, 5 days of reports, ticket support; chat and phone support for the first 14 days only.

• Starter$15

  per month for 10,000 emails, billed monthly

  30 days of reports, ticket, chat and phone support, subaccounts and SMS. Extra emails $1.20 per 1,000. Price rises with volume: $30 a month at 50,000 emails.

• Professional$75

  per month for 100,000 emails, billed monthly

  Adds a dedicated IP address and email testing tools. Extra emails cost $0.85 per 1,000, and the price rises with volume.

• PremierCustom

  Over 3 million emails a month, with personalized setup and support.

SocketLabs

• Core$39.95

  per month for 40,000 emails, billed monthly

  First month free. SMTP relay and API, StreamScoreLite, 10 days of insight history, ticket and chat support. Extra emails $0.0013 each.

• Pro$89.95

  per month for 100,000 emails, billed monthly

  Adds a dedicated IP address, StreamScorePro and priority support. Price rises with volume: $170 at 200,000, $600 at 800,000 emails a month.

• EnterpriseCustom

  For senders of 1M+ emails a month, with optional Spotlight, StreamMonitor and Rule Engine and dedicated support.

SMTP2GO

• Annual discount

  Two months free with yearly billing

  Paying yearly gives two months free: Starter at 10,000 emails is $150 a year instead of $180, and Professional at 100,000 is $750 instead of $900.

• Education

  30% education discount

  SMTP2GO's education page offers schools a 30% discount, with unlimited users and systems on one account.

SocketLabs

• Other savings

  First month of Core free

  A new verified account gets the Core plan for one month, or a set amount of credits, without a card. Sending stops at the end unless you upgrade.