What It Costs to Send 300,000 Emails a Month (10,000 a Day)
Sending 300,000 emails a month costs about $30 on Amazon SES's pay-as-you-go rate, around $310 on Mailgun's published overage rate, and more on marketing platforms that price by contact count. Add a dedicated IP if you need one ($24.95 a month standard on SES) and list cleaning before the first send. At 10,000 a day you're also a Gmail bulk sender, so authentication, DMARC and one-click unsubscribe aren't optional.
A popular r/Emailmarketing thread asked how to run a permission-based list at 10,000 a day: which platform, and which practices matter at that scale. Here are the published numbers (read 2 November 2026) and the requirements that come with the volume.
Published sending prices at 300,000 a month
| Provider | Published price | At 300,000 a month | Source |
|---|---|---|---|
| Amazon SES, à la carte | "$0.10 / 1,000 emails" | about $30 | SES pricing |
| Amazon SES, Essentials plan | $0.16 per 1,000 (0 to 10M a month) | about $48 | SES pricing |
| Mailgun Scale | $90 a month for 100,000, overage "from $1.10 / 1,000" | about $310 at overage, or a custom quote | Mailgun pricing |
The SES figure is sending only. SES also charges "$0.12 per GB of attachment data sent", and its pricing page says new accounts start on the Essentials plan from 21 July 2026. Mailgun's highest published tier is 100,000 emails; above that its page says "get in touch with our team".
Dedicated IP or not
| Option | Published price | At 300,000 a month |
|---|---|---|
| SES standard dedicated IP | $24.95 per IP per month | $24.95 |
| SES managed dedicated IPs | $15 a month plus $0.08 per 1,000 | about $39 |
| Mailgun | One included on Scale, extra IPs $59 a month | included |
300,000 a month is around the volume where several providers start to recommend a dedicated IP, but only if you send it every day. A dedicated IP has no history and has to be warmed up from nothing. Our post on shared versus dedicated IPs has each provider's published cut-off.
What the volume requires
Google's sender guidelines treat senders of more than 5,000 messages a day to Gmail as bulk senders. On top of what all senders need (SPF or DKIM, TLS, valid PTR records), bulk senders must:
- Set up DMARC, with direct mail passing alignment.
- Include one-click unsubscribe in marketing and subscribed messages, plus "a clearly visible unsubscribe link in the message body".
- Keep the Postmaster Tools spam rate below 0.3%, with Google recommending under 0.10%.
Check your domain with the bulk email authentication checker before the first send, and ramp volume rather than starting at 10,000 a day. Google says to start "with a low sending volume to engaged users, and slowly increase the volume over time."
The cost that's easy to leave out: the list
At this volume a bad list costs more than the sending. SES reviews accounts at a 5% bounce rate (see SES bounce reviews), and a review stops your mail for every customer. Clean the list before you move it and on a schedule afterwards:
| List size | One-time cleaning with SimpleVerifier |
|---|---|
| 10,000 | one $15 pack (never expires) |
| 100,000 | within Pro's first 100,000 checks a month at full speed |
Estimate other sizes with the verification cost calculator. For a permission-based list you'll usually clean the full list once, then only new signups and segments you haven't mailed in a while.
What SimpleVerifier costs
The first 100 checks are free with a Google sign-in on the verify page. Pro is $39 a month with the first 100,000 checks a month at full speed, then slower, never cut off. One-time packs start at 10,000 checks for $15 and never expire. See pricing.
Common questions
What is the cheapest way to send 300,000 emails a month?
On published per-email prices, Amazon SES à la carte at $0.10 per 1,000 is the cheapest of the providers we read, about $30 a month. You build the subscription management, unsubscribe handling, bounce processing and templates yourself, or pay for a tool on top that does.
Do I need a dedicated IP at 300,000 emails a month?
Not necessarily. Several providers put their dedicated-IP threshold around that volume, but only if you send it steadily. A dedicated IP with irregular volume does worse than a good shared pool. Our shared versus dedicated IP post has each provider's published cut-off.
Does 10,000 emails a day make me a bulk sender?
Yes, for Gmail. Google's bulk sender rules apply to anyone sending close to 5,000 or more messages a day to Gmail accounts, and once you qualify the requirements stay.
Why do marketing platforms cost more than SES?
Marketing platforms usually price by contacts rather than by email and include the editor, segmentation, automation, signup forms and unsubscribe handling. SES and Mailgun price the sending; the rest is yours to build or buy.
Check your list before you send
Real mailbox checks over SMTP, and nothing is sent to the address. Sign in with Google and your first 100 email checks are free, no card. Plans for bigger lists are on the pricing page.