Transactional email
Receipts, password resets and other emails your app sends. Prices checked 2026-10-20.
What it is, and what decides the price
Transactional email is the mail your app sends on its own: receipts, password resets, sign-up confirmations. It is different from a newsletter: one message to one person, triggered by something they did.
Vendors bill by emails sent a month, usually with a small free allowance and a price that steps up with volume. Extras such as dedicated IP addresses are billed separately. Whichever vendor you pick, sending from your own domain with SPF and DKIM set up is what keeps these emails out of spam.
Which one do you pay for today?
Other tools we compare
What each costs at 50,000 emails a month
Cheapest first, for the default use case (4 must-haves). Pick a tool to see its plans, limits and sources, or open a leader above to compare it with the others at every size.
| tool | plan | $/mo | covers |
|---|---|---|---|
| Amazon SES | Pay as you go | $5 | 3 of 4, the rest not confirmed |
| SendGrid | Essentials | $19.95 | all 4 |
| Resend | Pro | $20 | all 4 |
| MailerSend | Starter | $35 | 3 of 4, the rest not confirmed |
| Mailgun | Foundation | $35 | all 4 |
| Postmark | Basic | $55 | all 4 |
How we compare
Emails your app sends in a month, all of them transactional (sign-up, receipts, password resets). Monthly billing, list prices, the cheapest plan that covers the size and everything you need. Vendors that price by a sliding scale publish prices only at certain volumes; where a vendor shows no price at a size, the price is left blank rather than guessed. Dedicated IPs, extra domains and attachments are not included unless you tick them.