sendvia, Resend, Postmark, Mailgun, SendGrid and raw Amazon SES, priced at seven volumes from 1,000 to 5,000,000 emails a month, with the crossover points and the honest gaps.
This is the same table behind the cost calculator, at the seven volumes every page on this site prices against: a published tier price where a provider prints one, a figure computed from a published rate for extra emails where it does not, and "Not published" where there is nothing to compute from at all.
| Emails per month | sendvia | Resend | Postmark | Mailgun | SendGrid | Raw SES |
|---|---|---|---|---|---|---|
| 1,000 | $19.10$19.00 + $0.10 SES | $0.00 | $15.00 | $0.00 | Not publishedSendGrid does not print a price against a send volume. See their pricing page. | $0.10 |
| 10,000 | $20.00$19.00 + $1.00 SES | $20.00 | $15.00 | $15.00 | Not publishedSendGrid does not print a price against a send volume. See their pricing page. | $1.00 |
| 50,000 | $24.00$19.00 + $5.00 SES | $20.00 | $66.00Based on Postmark's Platform plan at $18.00 plus their published $1.20 per additional 1,000. | $35.00 | Not publishedSendGrid does not print a price against a send volume. See their pricing page. | $5.00 |
| 100,000 | $29.00$19.00 + $10.00 SES | $35.00 | $126.00Based on Postmark's Platform plan at $18.00 plus their published $1.20 per additional 1,000. | $90.00 | Not publishedSendGrid does not print a price against a send volume. See their pricing page. | $10.00 |
| 500,000 | $69.00$19.00 + $50.00 SES | $350.00 | $606.00Based on Postmark's Platform plan at $18.00 plus their published $1.20 per additional 1,000. | $530.00At least $530.00. Computed from Mailgun's published $1.10 per additional 1,000 above 100,000 emails, staying on their $90.00 tier. That rate is published as a "from" price, so treat this as a lower bound. | Not publishedSendGrid does not print a price against a send volume. See their pricing page. | $50.00 |
| 1,000,000 | $119.00$19.00 + $100.00 SES | $650.00 | $1,206.00Based on Postmark's Platform plan at $18.00 plus their published $1.20 per additional 1,000. | $1,080.00At least $1,080.00. Computed from Mailgun's published $1.10 per additional 1,000 above 100,000 emails, staying on their $90.00 tier. That rate is published as a "from" price, so treat this as a lower bound. | Not publishedSendGrid does not print a price against a send volume. See their pricing page. | $100.00 |
| 5,000,000 | $519.00$19.00 + $500.00 SES | Not publishedAbove 2,500,000 emails a month, Resend negotiates the price directly rather than publishing one. See their pricing page. | Not publishedAbove 1,000,000 emails a month, Postmark negotiates the price directly rather than publishing one. See their pricing page. | $5,480.00At least $5,480.00. Computed from Mailgun's published $1.10 per additional 1,000 above 100,000 emails, staying on their $90.00 tier. That rate is published as a "from" price, so treat this as a lower bound. | Not publishedSendGrid does not print a price against a send volume. See their pricing page. | $500.00 |
| Prices verified . Each figure is the cheapest route worked out from what a provider actually publishes. Some are a quoted plan price; others are computed from a published rate for extra emails, and a note beside those says so. sendvia cost is a flat $19 plus Amazon SES at cost. | ||||||
Three of the four rivals give away real volume for nothing, and so does sendvia. Resend is free up to 3,000 emails a month. Mailgun's free plan is published as a daily cap rather than a monthly total; converted to the same monthly terms, it comes to the same 3,000. Postmark's free tier is far smaller, 100 emails a month with no overage allowed at all, so it stops being free almost as soon as a real workload starts.
sendvia's own free plan is capped at 250 emails a day on one domain, with 7 days of history. Below that ceiling sendvia costs nothing either. A sender who needs more than that, more history, or a single burst bigger than the daily cap, moves to the $19.00 plan before their monthly total would have outgrown Resend's or Mailgun's free allowance. That is a real loss for sendvia at low volume, not a rounding error, and it is worth knowing before assuming the flat fee always wins.
"sendvia beats the free tier past 3,000 emails" is close but not quite right, and the shape past that point is not one clean line either. At 10,000 emails a month sendvia and Resend cost exactly the same, $20.00 each. Mailgun and Postmark are both still cheaper at that point, at $15.00 flat. By 50,000, Mailgun has climbed past sendvia, to $35.00 against sendvia's $24.00, and so has Postmark, whose cheapest plan at that volume computes to $66.00, while Resend is still the cheapest of the three at a flat $20.00. It takes until somewhere between 50,000 and 100,000 for Resend to fall behind for good: by 100,000 sendvia is already the cheapest priced option on the table, at $29.00 against Resend's $35.00, and the gap only widens from there. At 1,000,000 sendvia is $119.00 against Resend's $650.00, and at the top of this table, 5,000,000, sendvia is $519.00 against the only rival still pricing that high, Mailgun, at $5,480.00, itself printed as a floor rather than a fixed number.
Read the 100,000-email guide and the 1,000,000-email guide for the arithmetic behind two of these points worked all the way through, or the per-provider comparison pages for what the price difference buys beyond the number itself.
SendGrid is the one provider missing from every row of the table above. Its own pricing page states entry prices for an Essentials and a Pro plan and never says which send volume either one buys: the control that would answer that is drawn in the browser rather than written into the page text. Pairing a published entry price with a guessed send volume would be the least fair thing a table like this could do, so nothing is recorded for SendGrid at any of the seven volumes, and each cell says why rather than showing a blank. The full case for SendGrid, on features rather than price, is on its own comparison page.
A price is what a provider charges. It says nothing about what you get for it or what it takes to actually collect on the number.
sendvia only works through your own Amazon SES account, which means an AWS account and an IAM user before anything else. A brand new SES account starts inside Amazon's sandbox, capped at 200 emails a day to verified recipients, until Amazon reviews it and grants production access, usually within 12 to 24 hours. There is no dedicated IP option, no inbound email or parsing, no teams or sub-accounts and no official SDKs. Logs last 7 days on the free plan and 90 on the paid one. sendvia also does not receive a confirmed delivery event from Amazon: it marks a message delivered once nothing negative has come back against it a couple of minutes after sending. Resend, Postmark, Mailgun and SendGrid all receive a real delivery event from their own systems, and sendvia does not.
None of that changes a figure in the table above. It changes whether the cheapest number is the right answer for what you are actually trying to do. Read what sendvia actually is before deciding either way.