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Email Cost Calculator

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Compare transactional email cost at your volume — SES, Cloudflare, Resend, SendGrid, Postmark, and Mailgun from a dated rate card.

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Recipients for SES; messages for plan-based vendors. Slider covers 100–1M; type any whole number.

Estimate from a dated rate card (2026-08-18) — not an invoice. Transactional / API sending only.

Estimate

Cheapest at this volume · rates as of 2026-08-18
Amazon SES · $1.00
Pay as you go

Cheapest in this model at this volume — not “cheapest forever.” Confirm on the vendor’s pricing page.

Ranked transactional email vendor costs
VendorSKUMonthlyEffective / 1kNotes
Amazon SESCheapestPay as you go$1.00$0.10No SES free allowance applied (default).
Cloudflare Email SendingWorkers Paid + Email Sending$7.45$0.75Adds $5.00 Workers Paid unless you already pay for it.
MailgunBasic$15.00$1.50Cheapest modeled Mailgun SKU at this volume.
PostmarkBasic$15.00$1.50Cheapest modeled Postmark SKU at this volume.
SendGrid Email APIEssentials 50k$19.95$2.00Cheapest modeled SendGrid Email API SKU at this volume.
ResendPro 50k$20.00$2.00Cheapest modeled Resend SKU at this volume.

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How to Use

  1. 1 Enter emails you expect to send per month
  2. 2 Toggle whether you already pay for Cloudflare Workers Paid
  3. 3 Optional: SES free allowance, attachments, and unit-price overrides
  4. 4 Read the cheapest SKU at this volume and the ranked comparison table

Features

  • One engine, six vendors — cheapest SKU that can send the volume
  • Dated rate card (no live scrape) with override fields
  • Cloudflare Workers Paid floor and verified-destination toggle
  • SES per-recipient a-la-carte; free tier off by default
  • USD primary; optional INR via the FX you type
  • Client-side — nothing is uploaded

Why it Matters

Plan floors hide behind a cheap per-thousand number. This tool picks the cheapest SKU that can actually send your volume, then ranks vendors so a $0.10/1k rate is not compared to a $20 Pro floor as if they were the same model.

★★★★★

Frequently Asked Questions

Are these live vendor prices?
No. Numbers come from a dated rate card (shown as “rates as of”). Re-check the official pricing page before you commit. Use the override fields if a vendor has already repriced.
Is this an invoice?
No — an educational estimate. Dedicated IPs, SES bundled plans, taxes, annual discounts, and inbound Worker CPU are out of v1.
Does this cover Mailchimp or Klaviyo?
No. Those are marketing ESPs priced on contacts, not sends. This cluster is transactional / API sending only.
Why is SES cheaper than everyone at 10k?
A-la-carte SES is $0.10 per 1,000 recipients with no plan floor in this model. ESPs with a $15–$20 monthly SKU lose at low volume even when their included quota is large.
Can I override the unit price?
Yes — advanced options let you override SES $/1k, Cloudflare overage $/1k, and the Workers Paid floor.
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