RAPID SMTP
SMTP Relay Service

SMTP relay service with queue, retries & logs

Plug in your backend SMTP — Amazon SES, Mailgun, Postmark, Gmail, your own server — and relay transactional or bulk mail with rate limits, retries and per-message audit logs.

7-day money back No per-email fee Instant activation
Why RAPID SMTP

Everything you need to send email

Reliable relay with retries

Soft bounces are auto-retried with exponential backoff. Hard bounces go to suppression instantly.

Plug in any backend SMTP

Amazon SES, Mailgun, Postmark, SendGrid, Brevo, Gmail, cPanel — RAPID SMTP relays through whichever you bring.

Queue & rate limiting

Per-account per-minute / per-hour limits prevent provider throttling. The queue persists across restarts.

Per-message logs

Every relay attempt is recorded with the full SMTP response, headers and parsed result for audit.

Encrypted credentials

Relay credentials stored AES-256-GCM at rest. Service-role keys never touch the browser.

DNS & header tools

SPF, DKIM, DMARC verification and a header analyzer help debug relay deliverability instantly.

SMTP relay vs direct SMTP — when do you need one?

Sending email directly from your application code works for the first few hundred messages. Past that, you hit three walls: providers temporarily reject (4xx), your app blocks waiting for the SMTP handshake, and one bad recipient blows up the whole batch. An SMTP relay solves all three.

What a good SMTP relay should do

  • Persistent queue — survives restarts; nothing is lost mid-send.
  • Automatic retries on 4xx responses with backoff.
  • Per-account rate limiting so providers stay happy.
  • Per-message logs with the full SMTP transcript.
  • Suppression list for hard bounces and complaints.
  • Auth tooling — SPF, DKIM, DMARC verification and a header analyzer.

RAPID SMTP ships all of the above as a managed relay with a clean dashboard. Bring any SMTP backend.

Spin up a relay →

Every plan

Included with all plans

Bring your own Gmail, SES, Mailgun, or any SMTP
Open & click tracking
Schedule campaigns
Encrypted credentials
Unsubscribe management
Background queue
Simple pricing

Start from ৳59/month

Flat BDT pricing. No per-email fees. Cancel anytime.

Starter plan
৳59/month

Everything you need to send, track and manage email — without per-message surcharges.

  • Flat BDT pricing — no per-email fees
  • Unlimited campaigns & contacts
  • Open, click & bounce tracking included
  • DKIM / SPF / DMARC diagnostic tools
  • One-click unsubscribe & suppression
  • Cancel anytime, 7-day money back
FAQ

Frequently asked questions

Ready to start sending?

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