Postmark vs SMTP2GO: developer API pricing compared
Updated 2026-11-10 · listed A to Z, not ranked
Postmark is a transactional email service. Its three paid plans start at 10,000 emails a month and differ by overage rate, retention and domains.
SMTP2GO is an email delivery service (SMTP relay and API) for transactional and bulk email. Plans are sized by monthly email volume.
Listed A to Z, from postmarkapp.com and smtp2go.com. Every figure below is quoted from those pages.
- Main price table
- Free, Basic, Pro, Platform
- Free option
- Free: $0 (100 emails a month)
- Published prices
- Free 100 emails a month, Basic $15, Pro $16.50 and Platform $18 for 10,000 emails, overage per 1,000 and retention.
- Main price table
- Free, Starter, Professional
- Free option
- Free: $0
- Published prices
- Free 1,000 emails/mo, Starter $15/mo for 10,000, Professional $75/mo for 100,000 (monthly billing).
How we checked: Prices quoted from each official pricing page: Postmark checked Nov 10, 2026, SMTP2GO checked Nov 10, 2026. Taxes, usage overages and promotions can change what you pay; confirm with each provider before you buy.
How they compare
- Main price table. Postmark lists 4 entries (Free, Basic, Pro, Platform); SMTP2GO lists 3 (Free, Starter, Professional).
- Lowest listed paid tier. Postmark: Basic $15, price per month. SMTP2GO: Starter $15/mo, billed monthly. Billing terms differ (per user or flat, monthly or annual), so check what each tier includes below.
- Free option. Postmark: Free: $0 (100 emails a month). SMTP2GO: Free: $0.
- How prices are quoted. Postmark: “Plans (10,000 emails a month)”. SMTP2GO: “Plans”.
Postmark plans and prices
| Plan | Price per month | Extra per 1,000 | Includes |
|---|---|---|---|
| Free | $0 (100 emails a month) | No overage | |
| Basic | $15 | $1.80 | 45-day retention, 5 domains |
| Pro | $16.50 | $1.30 | Retention up to 365 days, 10 domains, inbound |
| Platform | $18 | $1.20 | Unlimited domains, inbound |
From postmarkapp.com, checked Nov 10, 2026. Full breakdown: Postmark pricing.
SMTP2GO plans and prices
| Plan | Billed monthly | Billed annually | Emails per month | Extra emails |
|---|---|---|---|---|
| Free | $0 | $0 | 1,000 (limited to 200/day) | Not permitted |
| Starter | $15/mo | $150/year | 10,000 | $1.20 per thousand |
| Professional | $75/mo | $750/year | 100,000 | $0.85 per thousand |
Prices in USD as shown at the page's default volume setting. The page has a volume slider, so higher volumes are priced separately. Free includes 5 days of email reporting and ticket support only; Starter and Professional include 30 days of reporting and ticket/chat/phone support. Professional adds a dedicated IP address and email testing tools.
From smtp2go.com, checked Nov 10, 2026. Full breakdown: SMTP2GO pricing.
FAQ
How much does Postmark cost?
Free 100 emails a month, Basic $15, Pro $16.50 and Platform $18 for 10,000 emails, overage per 1,000 and retention. (checked Nov 10, 2026).
How much does SMTP2GO cost?
Free 1,000 emails/mo, Starter $15/mo for 10,000, Professional $75/mo for 100,000 (monthly billing). (checked Nov 10, 2026).
Do Postmark and SMTP2GO have a free option?
Postmark: Free: $0 (100 emails a month). SMTP2GO: Free: $0.
What is the cheapest paid plan, Postmark or SMTP2GO?
Lowest listed paid tier: Postmark Basic $15, price per month; SMTP2GO Starter $15/mo, billed monthly (as quoted on each pricing page). Billing units differ, so compare what each includes.
Which is better, Postmark or SMTP2GO?
We do not pick a winner. The two price and package their products differently; the tables above quote each official pricing page so you can match a plan to your own usage.
Where do these prices come from?
Each vendor's own pricing page: postmarkapp.com (checked Nov 10, 2026) and smtp2go.com (checked Nov 10, 2026). Prices change; confirm on the vendor's page before you buy.
Sources (official pages, read 2026-11-10)
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