ZeptoMail is Zoho’s transactional-only email service with pay-as-you-go credit pricing, popular with cost-conscious teams — especially in India.
| Feature | MailBlastr | ZeptoMail |
|---|---|---|
| Free tier | 3,000 emails/month (100/day), 1,000 contacts, 1 domain — no card required | First 10,000 emails free (one credit) |
| Entry paid plan | $14/mo — 50,000 emails, 2,500 contacts, 10 domains | $2.50 per 10,000-email credit |
| 100k emails/month | $24/mo (Pro 100k) · $63/mo (Scale, 1000 domains) | ≈$25 in credits — transactional only |
| Extra volume | $0.90 per 1,000 emails — credits never expire | Buy more credits (expire in 6 months) |
| Transactional + marketing in one | API sends, campaigns, automations, and audiences in every plan | Transactional ONLY — marketing email prohibited |
| Contacts & audiences | Included on every plan — 1,000 on Free, up to 250,000 on stock plans | ✗ |
| Automations | Included — visual automations, 10,000 runs/month | ✗ |
| A/B testing | ✓ | ✗ |
| Inbound receiving | ✓ | ✗ |
| Event webhooks | Signed webhooks: delivered, opened, clicked, bounced, complained, unsubscribed | ✓ |
| Official SDKs | 8 languages + CLI | SDKs for major languages |
| Log retention | 30 days on every plan | 60 days content retention (configurable window) |
| Dedicated IP | Add-on on Scale — $21/30 days | Available as add-on |
| INR billing for India | ✓ | ✓ |
ZeptoMail pricing and features summarized from public pricing pages, last checked 2026-08-02. MailBlastr figures come from the live plan catalog.
If you send purely transactional email at low, spiky volume and want the absolute lowest bill — or you live inside the Zoho suite — ZeptoMail’s pay-as-you-go credits are genuinely hard to beat. Just keep marketing email somewhere else, because Zoho enforces the ban.
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.
Credit-based: $2.50 buys one credit worth 10,000 transactional emails; credits expire after 6 months. First credit free at signup. No monthly plans — send nothing, pay nothing. Marketing/bulk email is prohibited by policy. Zoho announced updated pricing for new signups from July 2026.
Last checked 2026-08-02 against ZeptoMail's public pricing.
If 100% of your email is transactional and volume is low, ZeptoMail wins on price and that is the honest answer. Teams switch when they also need marketing sends (banned on ZeptoMail), audiences, automations, or analytics — capabilities that would otherwise mean adding and integrating Zoho Campaigns as a second product.
No — Zoho explicitly prohibits bulk and promotional email on ZeptoMail and suspends accounts that try. MailBlastr supports both transactional and marketing sending with per-domain reputation isolation.
No. ZeptoMail credits expire 6 months after purchase; MailBlastr credits never expire, and every plan already includes a monthly email allowance before credits are touched.
Yes — native INR pricing for Indian customers on every plan and on credits, no USD card or FX mark-up required.
Verify your domain (guided DKIM/SPF/DMARC), swap the send call to POST /emails or one of 8 SDKs, and re-point webhooks. Mail Agents map to sending domains; templates port as HTML.
Thinking about moving? Read the step-by-step ZeptoMail alternative guide.
Free tier with 3,000 emails a month — API, campaigns, automations, and webhooks included. No card required.