SMTP2GO vs Postmark
A comparison of SMTP2GO and Postmark built from values read directly from each provider's own documentation, with the source recorded against every figure.
The short answer
- Pick SMTP2GO if
- Steady sending where the overage rate matters more than the plan fee — $0.85 per thousand on Professional is the lowest published here, and 30 days of reporting comes on every paid tier rather than as an upgrade.
- Pick Postmark if
- Teams that need to answer "what happened to this message" weeks later — 45 days of retention as standard, extendable to a year, is the longest window in this set.
5 sourced criteria separate them:
- Entry paid plan
- SMTP2GO: $10/month for Starter, or $100 a year. Professional is $75/month.
- Postmark: $15.00/month for Basic at the 10,000-email tier. Postmark prices by volume, so the figure rises with the slider.
- Pricing model
- SMTP2GO: Monthly or annual volume plans — the annual price is ten months' worth — with per-thousand overage that improves on the larger plan, and SMS billed alongside email.
- Postmark: One monthly price per volume tier, chosen on a slider, covering both sent and received email. Overage rates improve as the plan gets larger.
- Emails included
- SMTP2GO: 10,000 a month on Starter and 100,000 on Professional. The free plan allows 1,000.
- Postmark: 10,000 a month at the $15 Basic tier. The plan price scales with volume — 50,000, 125,000, 300,000, 700,000 and 1.5M are the published steps. The free tier is 100 a month.
- Price per 1,000 over
- SMTP2GO: $1 per thousand on Starter, falling to $0.85 on Professional — the cheapest published overage of any provider here.
- Postmark: $1.80 per 1,000 on Basic, $1.30 on Pro and $1.20 on Platform. The free tier allows no overage at all.
- Log retention
- SMTP2GO: 30 days of email reporting, on Starter and Professional alike rather than rising with the plan.
- Postmark: 45 days on Basic. Pro and Platform default to 45 days and can be raised to 365.
Pick the criteria you care about. The chart counts how many of them lean toward each provider — the same read as scanning the bars below, just totalled for the ones you chose.
SMTP2GO 0
Postmark 0
At a glance.
| Criterion | SMTP2GO | Postmark |
|---|---|---|
| Pricing | ||
| Free tier | Yes | Yes |
| Entry paid plan | $10/month for Starter, or $100 a year. Professional is $75/month. | $15.00/month for Basic at the 10,000-email tier. Postmark prices by volume, so the figure rises with the slider. |
| Pricing model | Monthly or annual volume plans — the annual price is ten months' worth — with per-thousand overage that improves on the larger plan, and SMS billed alongside email. | One monthly price per volume tier, chosen on a slider, covering both sent and received email. Overage rates improve as the plan gets larger. |
| Emails included | 10,000 a month on Starter and 100,000 on Professional. The free plan allows 1,000. | 10,000 a month at the $15 Basic tier. The plan price scales with volume — 50,000, 125,000, 300,000, 700,000 and 1.5M are the published steps. The free tier is 100 a month. |
| Price per 1,000 over | $1 per thousand on Starter, falling to $0.85 on Professional — the cheapest published overage of any provider here. | $1.80 per 1,000 on Basic, $1.30 on Pro and $1.20 on Platform. The free tier allows no overage at all. |
| Log retention | 30 days of email reporting, on Starter and Professional alike rather than rising with the plan. | 45 days on Basic. Pro and Platform default to 45 days and can be raised to 365. |
| Dedicated IP | Limited | Limited |
Where they differ.
Entry paid plan
- SMTP2GO
- $10/month for Starter, or $100 a year. Professional is $75/month.
- Postmark
- $15.00/month for Basic at the 10,000-email tier. Postmark prices by volume, so the figure rises with the slider.
Sources (2) →Sources ↓
- Pricing — SMTP2GO ↗
“Starter $ 10 /mo $ 100 /year [...] Professional $ 75 /mo $ 750 /year”
Read 2026-09-06 · official pricing
- Pricing — Postmark ↗
“How many emails do you send and receive each month? 10,000 emails [...] Basic $15.00/mo”
Read 2026-09-06 · official pricing
Pricing model
- SMTP2GO
- Monthly or annual volume plans — the annual price is ten months' worth — with per-thousand overage that improves on the larger plan, and SMS billed alongside email.
- Postmark
- One monthly price per volume tier, chosen on a slider, covering both sent and received email. Overage rates improve as the plan gets larger.
Sources (2) →Sources ↓
- Pricing — SMTP2GO ↗
“Starter $ 10 /mo $ 100 /year [...] Professional $ 75 /mo $ 750 /year [...] SMS messaging Extra emails: $0.85 / thousand”
Read 2026-09-06 · official pricing
- Pricing — Postmark ↗
“How many emails do you send and receive each month? [...] Basic $15.00/mo [...] Pro $16.50/mo [...] Platform $18.00/mo”
Read 2026-09-06 · official pricing
Emails included
10,000 a month on Starter and 100,000 on Professional. The free plan allows 1,000.
10,000 a month at the $15 Basic tier. The plan price scales with volume — 50,000, 125,000, 300,000, 700,000 and 1.5M are the published steps. The free tier is 100 a month.
Sources (2) →Sources ↓
- Pricing — SMTP2GO ↗
“Starter [...] 10,000 emails/mo [...] Professional [...] 100,000 emails/mo [...] free plan for up to 1,000 emails per month”
Read 2026-09-06 · official pricing
- Pricing — Postmark ↗
“10,000 50,000 125,000 300,000 700,000 1,500,000 More [...] Basic $15.00/mo [...] Test your integration with 100 emails/month”
Read 2026-09-06 · official pricing
Price per 1,000 over
- SMTP2GO
- $1 per thousand on Starter, falling to $0.85 on Professional — the cheapest published overage of any provider here.
- Postmark
- $1.80 per 1,000 on Basic, $1.30 on Pro and $1.20 on Platform. The free tier allows no overage at all.
Sources (2) →Sources ↓
- Pricing — SMTP2GO ↗
“Extra emails: $1 / thousand [...] Extra emails: $0.85 / thousand”
Read 2026-09-06 · official pricing
- Pricing — Postmark ↗
“Extra emails @ $1.80 / 1,000 [...] Extra emails @ $1.30 / 1,000 [...] Extra emails @ $1.20 / 1,000 [...] No overages allowed in this plan.”
Read 2026-09-06 · official pricing
Log retention
30 days of email reporting, on Starter and Professional alike rather than rising with the plan.
45 days on Basic. Pro and Platform default to 45 days and can be raised to 365.
Sources (2) →Sources ↓
- Pricing — SMTP2GO ↗
“10,000 emails/mo 30 days of email reporting [...] 100,000 emails/mo 30 days of email reporting”
Read 2026-09-06 · official pricing
- Pricing — Postmark ↗
“45-day data retention [...] Customizable data retention up to 365 days (45-day default)”
Read 2026-09-06 · official pricing
When these numbers change, hear about it. Sources are re-checked monthly; a repricing goes out as a short note.
Which should you choose?
Choose SMTP2GO if…
Steady sending where the overage rate matters more than the plan fee — $0.85 per thousand on Professional is the lowest published here, and 30 days of reporting comes on every paid tier rather than as an upgrade.
Editorial · Palash Bagchi · approved
Choose Postmark if…
Teams that need to answer "what happened to this message" weeks later — 45 days of retention as standard, extendable to a year, is the longest window in this set.
Editorial · Palash Bagchi · approved
Consider something else if…
- SMTP2GO: A dedicated IP needs the $75 Professional plan, and the entry tier's 10,000 emails is a quarter of what Resend includes for twice the price.
- Postmark: The included volume is small for the price and overage is the most expensive here at $1.80 per 1,000 on the entry plan.
Documented by only one.
These criteria are published by one provider and not the other. An absence here means we have not found a source, not that the feature is missing.
Questions this comparison answers.
Entry paid plan: SMTP2GO or Postmark?
SMTP2GO: $10/month for Starter, or $100 a year. Professional is $75/month.
Postmark: $15.00/month for Basic at the 10,000-email tier. Postmark prices by volume, so the figure rises with the slider.
Should I choose SMTP2GO or Postmark?
Pick SMTP2GO if Steady sending where the overage rate matters more than the plan fee — $0.85 per thousand on Professional is the lowest published here, and 30 days of reporting comes on every paid tier rather than as an upgrade.
Pick Postmark if Teams that need to answer "what happened to this message" weeks later — 45 days of retention as standard, extendable to a year, is the longest window in this set.