SMTP2GO is a reliability-focused SMTP relay and email API with a long-standing free tier, popular for getting application and device email delivered with minimal fuss.
| Feature | MailBlastr | SMTP2GO |
|---|---|---|
| Free tier | 3,000 emails/month (100/day), 1,000 contacts, 1 domain — no card required | 1,000 emails/mo (200/day) |
| Entry paid plan | $14/mo — 50,000 emails, 2,500 contacts, 10 domains | $15/mo — 10,000 emails (Starter) |
| 100k emails/month | $24/mo (Pro 100k) · $63/mo (Scale, 1000 domains) | Professional from $75/mo |
| Extra volume | $0.90 per 1,000 emails — credits never expire | Per-1,000 overage on subscriptions |
| Transactional + marketing in one | API sends, campaigns, automations, and audiences in every plan | Relay/API focus — no marketing suite |
| Contacts & audiences | Included on every plan — 1,000 on Free, up to 250,000 on stock plans | No audience management |
| Automations | Included — visual automations, 10,000 runs/month | ✗ |
| A/B testing | ✓ | ✗ |
| Inbound receiving | ✓ | On Professional plan |
| Event webhooks | Signed webhooks: delivered, opened, clicked, bounced, complained, unsubscribed | ✓ |
| Official SDKs | 8 languages + CLI | API + SMTP; limited official SDKs |
| Log retention | 30 days on every plan | 30 days activity on paid plans |
| Dedicated IP | Add-on on Scale — $21/30 days | Professional plan |
| INR billing for India | ✓ | ✗ |
SMTP2GO pricing and features summarized from public pricing pages, last checked 2026-08-02. MailBlastr figures come from the live plan catalog.
If you need a pure SMTP relay for legacy software, printers/scanners/devices, or an app you cannot modify beyond SMTP credentials, SMTP2GO is built precisely for that. MailBlastr is HTTPS-API-first and does not currently expose raw SMTP.
Free: 3,000 emails/month (100/day), 1,000 contacts, 1 domain — no card. Paid from $14/month for 50,000 emails; 100,000 emails from $24/month; Scale at $63/month adds 1,000 domains, priority support, and the dedicated-IP add-on ($21/30 days). Extra volume via credits at $0.90 per 1,000 — they never expire.
Free: 1,000 emails/month (200/day), no expiry. Starter from $15/month for 10,000 emails; Professional from $75/month for 100,000 with dedicated IPs and inbound. Two months free on annual billing; overage billed per 1,000.
Last checked 2026-08-02 against SMTP2GO's public pricing.
No — MailBlastr is HTTPS-API-first (REST API, 8 SDK languages, CLI); raw SMTP relay is intentionally not exposed today. If a device or legacy app can only speak SMTP, SMTP2GO is the right tool; if your code can make an HTTPS call, the API is simpler and richer.
MailBlastr at every published volume: its entry plan undercuts SMTP2GO Starter while including 5× the emails, and its 100k tiers are far below SMTP2GO Professional ($75/month).
It can relay whatever you generate, but there is no campaign composer, audience management, automations, or A/B testing. MailBlastr includes that entire layer.
It allows 200/day (versus MailBlastr’s 100/day) but only 1,000/month total versus 3,000. For steady low-volume sending MailBlastr’s cap is 3× larger.
Replace the SMTP credentials with one HTTPS call — POST /emails with from/to/subject/html — or drop in an SDK. Verify your domain first (guided DKIM/SPF/DMARC), then re-point event webhooks.
Thinking about moving? Read the step-by-step SMTP2GO alternative guide.
Free tier with 3,000 emails a month — API, campaigns, automations, and webhooks included. No card required.