SMTP2GO
- Free allowance
- 1,000 emails/month, 200/day, and 25/hour until a sender domain is verified
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- any-phoneno card, phone required
- Binding limit
- request-rate200 emails per day; 25 per hour while no sender domain is verified; 1,000 emails per month
- Evidence
- documented15 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-30checked 2026-10-30 (live); stale on 2026-11-30
| Free tier | 1,000 emails/month, 200/day, and 25/hour until a sender domain is verified unit requests; metered on request-count; Sends above the daily limit are queued and released as the daily quota allows; past 1,000 in a month further sends are rejected. Up to 5 sender domains or single sender emails can be verified, and while no sender domain is verified the account is held to 25 per hour. A send from an unverified sender is rejected and still counts toward the monthly quota. Reporting covers the past 5 days, and support is ticket-only after 14 days. The free plan's page names no restriction on recipients. |
|---|---|
| Price | none stated |
| Limits | |
| Binding | request-rate 25/hour is 600/day if sustained and is the first ceiling a new signup meets, before the 200/day or the 1,000/month. |
| Identity | any-phone The free-plan signup asks for a work email at a private domain (addresses at public domains such as Gmail and Yahoo are refused), a full name, a company, a password and a contact phone number verified by a 5 digit SMS code; no card. Sending needs a verified sender domain or a verified single sender email, and a Gmail address cannot be verified as a single sender, so in practice the account needs a domain the sender controls. |
| Egress | not applicable: an outbound sender |
| Retention | 5 days of reporting on the free plan, against 30 on paid |
| Interface | rest, cli SMTP and the SMTP2GO API |
| Tooling | any SMTP client |
| Composes with | a 200/day relay with an hourly floor, so it composes with a sender that bursts rather than one that schedules. |
| Reliability | new paid accounts are held at 1,000/day during a one-time review |
| Notes | Three stacked caps on one product, and the hourly one is on the developer page but not on the pricing table. |
| Evidence note | documented no message was sent, so no delivery is proved. The submission path was probed: mail.smtp2go.com:2525 answered 250, STARTTLS completed, and AUTH LOGIN returned 334 |
| Parsed numbers |
|
Evidence 15
| date | source | what it proved |
|---|---|---|
| 2026-10-22 | developers.smtp2go.com/docs/rate-limiting | 'The free plan allows 1,000 emails per month and has a limit of 200 emails per day (a 25-per-hour limitation also applies if no sender domains are verified)' |
| 2026-10-22 | www.smtp2go.com/pricing/ | 'Try SMTP2GO free for as long as you like' and 'over 1,000 emails/month' for paid |
| 2026-10-22 | probe: smtp://mail.smtp2go.com:2525 | banner 250 on port 2525, EHLO advertises SIZE and 8BITMIME, STARTTLS completed, and AUTH LOGIN returned 334. The submission endpoint answers; no message was sent |
| 2026-10-30 | www.smtp2go.com/pricing/ | the free-account signup form asks for a contact phone number and verifies it with an SMS code |
| 2026-10-30 | www.smtp2go.com/pricing/ | the free-account signup refuses an email at a public domain; the same form asks for full name, company, password and a contact phone number with an SMS code |
| 2026-10-30 | www.smtp2go.com/blog/know-your-sending-limits | the free plan is opened without a credit card |
| 2026-10-30 | support.smtp2go.com/hc/en-gb/articles/12747932085145-Quick-S | an account needs an address at a domain of its own; shared domains such as Gmail, Outlook and Yahoo are not accepted |
| 2026-10-30 | support.smtp2go.com/hc/en-gb/articles/12747932085145-Quick-S | sending is authorised only from a verified sender domain or a verified single sender email |
| 2026-10-30 | www.smtp2go.com/blog/registering-a-verified-sender-is-now-a- | a Gmail address cannot be verified as a single sender email |
| 2026-10-30 | support.smtp2go.com/hc/en-gb/articles/223087947-Free-Plan | the free plan verifies up to 5 senders; the same page gives the daily queue, the monthly rejection, the 25-per-hour hold, 5 days of reporting and ticket-only support after 14 days, and lists no recipient restriction |
| 2026-10-30 | www.smtp2go.com/blog/registering-a-verified-sender-is-now-a- | a send from an unverified sender is rejected and counts toward the monthly quota |
| 2026-10-30 | support.smtp2go.com/hc/en-gb/articles/223087947-Free-Plan | free-plan reporting covers 5 days against 30 on paid plans |
| 2026-10-30 | developers.smtp2go.com/docs/rate-limiting | new paid accounts are held at 1,000 per day until the one-time review completes |
| 2026-10-30 | support.smtp2go.com/hc/en-gb/articles/12747932085145-Quick-S | the account sends over SMTP at mail.smtp2go.com or through the API |
| 2026-10-30 | developers.smtp2go.com/docs/rate-limiting | the free plan is still 1,000 per month, 200 per day and 25 per hour until a sender domain is verified |
More fields 1
| stale after days | 90 |
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