SMTP2GO pricing: the free ceiling and Starter math

SMTP2GO has a Free Plan at $0 for up to 1,000 emails per month and a Starter plan at $15 for 10,000. Free is limited to 200 emails per day and does not permit extra messages. Starter lists extra email at $1.20 per thousand. These facts were checked October 7, 2026 on the SMTP2GO pricing page; capture timed out, so this page has no screenshot.

Include monitoring alerts, retries, and billing receipts in the relay forecast. Name the person who rotates credentials and owns DNS.

Keep the exact pricing URL and check date in the renewal record so a later operator can reproduce the $15 base plus $1.20-per-thousand calculation.

When comparing SMTP2GO with an API provider, include the engineering effort required to add correlation IDs and webhook processing. That is part of the migration cost.

Plan table

Cost at practical volumes

At 300 messages, Free costs $0 if the sends fit under 200 on any day. At 1,000, Free still costs $0, but the daily limit matters more than the monthly number. At 1,001, Free cannot simply add one paid message; you need a paid plan or must defer the send.

At 10,000, Starter is $15 and covers the allowance. At 12,000, the arithmetic is $15 + (2 × $1.20) = $17.40. At 50,000, it is $15 + (40 × $1.20) = $63. At 100,000, Starter plus overage would be $15 + (90 × $1.20) = $123, but the Professional plan lists 100,000 emails for $75, so $75 is the price to budget. The break-even is 60,000 emails: $15 + (50 × $1.20) = $75. Above 100,000, Professional charges $0.85 per extra thousand, so 250,000 is $75 + (150 × $0.85) = $202.50. Those examples use the listed overage rates; confirm whether your account has a different negotiated band before budgeting a large migration.

Free plan reality

SMTP2GO’s Free Plan is a sensible test lane for a legacy SMTP integration or a small internal app. The 200-per-day restriction makes it unsuitable for a bursty production workload, even when the monthly total is below 1,000. The “no extra emails” rule is the key billing gotcha: there is no surprise overage invoice, but there is also no automatic headroom.

Starter and the overage line

Starter buys a 10,000-message allowance for a predictable base fee. Once a month crosses that line, SMTP2GO's pricing page prices every additional thousand at $1.20. Keep a separate forecast for attachments, retries, and monitoring traffic so an incident does not silently push the account into a higher bill.

SMTP2GO-specific billing checks

SMTP2GO is often selected because an existing application already speaks SMTP. That can hide the volume source: a shared relay may carry application mail, alerts, and a forgotten plugin. Build the forecast from relay logs rather than only from your product database. The Free daily cap can also reject a batch that looks harmless when averaged over a month.

Ask procurement to confirm whether the $15 Starter price is monthly or annual-billing dependent, which overage band applies, and how account-level sending limits are enforced. Save that answer with the pricing date. A low base fee is useful only if the operational ceiling matches your busiest day.

Who should choose SMTP2GO?

Choose Free for testing and carefully paced low volume. Choose Starter for a team that wants a managed SMTP relay and can forecast around 10,000 monthly messages. If your team needs a richer API event model, compare Resend or Mailgun. If a transactional archive is central, review Postmark.

Migration notes

Inventory every SMTP credential and the applications that use it. Create a new credential with a clear environment name, authenticate the sending domain, and add a correlation header before cutover. Test 200-message daily pacing on Free only in a non-production lane. On Starter, verify bounce and complaint handling in your own logs because SMTP success alone does not prove final delivery.

Relay inventory before renewal

SMTP services often accumulate hidden senders: a monitoring tool, a billing job, a CMS plugin, and a forgotten staging host may all share one credential. Export relay logs by sender and environment before choosing Free or Starter. If one day can exceed 200 messages, Free is not a safe production fallback even when its monthly total remains under 1,000.

For a migration, give each environment its own credential and rotate the old one only after the new relay has passed a bounce and complaint test. Store the correlation header in your application logs. This makes a managed SMTP service observable enough for incident review without pretending that an SMTP 250 response proves inbox placement.

Relay forecast note

Include monitoring alerts, password resets, billing receipts, and retries in the relay forecast. Those operational messages are easy to omit when a team counts only customer notifications, and they are exactly the traffic that appears during an incident.

FAQ

How many emails are free on SMTP2GO?

The Free Plan includes up to 1,000 emails per month and is limited to 200 emails per day.

Can Free send over 1,000?

No. Extra emails are not permitted on the Free Plan. Move to Starter before the month crosses the allowance.

What does 50,000 emails cost?

Using Starter and the listed $1.20 per thousand overage, 50,000 is $15 + $48 = $63.

Record the exact date and account region beside the calculation. That gives the next operator a reproducible answer when a relay log shows an unexpected spike, and it makes a later comparison with API providers fair.