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Mailtruss vs Resend.
Two email APIs with similar send calls. Here is what each charges and offers, using Resend's own published prices, and the cases where Resend is the better choice.
Resend's figures were copied from resend.com on 2026-11-15. Prices change, so check that page before you decide. Mailtruss is not affiliated with Resend.
What each costs
| Volume | Mailtruss | Resend |
|---|---|---|
| About 25,000 emails a month | $9 (Starter, 25,000 included) | $20 (Pro, the smallest paid plan, includes 50,000) |
| About 50,000 emails a month | $29 (Pro, includes 100,000; there is no 50,000 plan) | $20 (Pro, includes 50,000) |
| About 100,000 emails a month | $29 (Pro, includes 100,000) | $90 (Scale, includes 100,000); or Pro at $20 plus 50,000 extra emails at $0.90 per 1,000, about $65 (calculated) |
At 50,000 emails a month Resend is cheaper, because Mailtruss has no plan between Starter (25,000) and Pro (100,000). At 25,000 and at 100,000 Mailtruss costs less. Both have a free plan of 3,000 emails a month. Mailtruss prices are on the pricing page.
Limits and features
| Mailtruss | Resend | |
|---|---|---|
| Free plan | 3,000 emails a month, 100 a day, 1 sending domain | 3,000 emails a month, 100 a day, 3 domains |
| Sending domains by plan | 1, 3, 10, 50 (Free, Starter, Pro, Business) | 3, 10, 1,000 (Free, Pro, Scale) |
| Message history kept | 7, 30, 60 or 90 days by plan (Free to Business) | 30 days on every standard plan |
| Past the monthly limit | Sending stops at the limit; nothing is billed beyond your plan | Paid plans can keep sending; extra emails are $0.90 per 1,000 |
| Inbound email, SMTP relay | Yes, on every plan | Yes (listed on its pricing page) |
| Webhooks | Signed with the Standard Webhooks scheme; retried for a day | Signed; 1, 5 or 10 endpoints by plan |
| Automations (sequences, delays) | Not available yet | Yes |
| Single sign-on | Not available yet | Add-on |
Where Resend is the better choice
- You need automations, or single sign-on as an add-on. Mailtruss does not have either yet.
- You send about 50,000 emails a month and want the lowest price, or you want to keep sending past your plan's limit and pay for the extra.
- You want a longer history on the free plan (30 days against 7 days).
- You want a company with a long track record. Mailtruss launched in November 2026.
Where Mailtruss fits
- Every message has a recorded timeline, and failures are explained in plain language with whether a retry is safe. A
200 OKonly means the request was accepted; the trace shows what happened after. See delivery errors. - Every plan has every feature. Plans differ only in volume, sending domains and API keys.
- Sending stops at your limit, so there is no overage bill to surprise you.
- Client libraries for Node.js, Python, Go, PHP, Ruby, Java and .NET, an OpenAPI document, and an MCP server. See send email by language.
Common questions
- Is Mailtruss cheaper than Resend?
- At about 25,000 emails a month, yes: $9 on Mailtruss Starter against $20 for Resend Pro, its smallest paid plan. At about 100,000 emails, yes: $29 on Mailtruss Pro against $90 for Resend Scale. At about 50,000 emails Resend is cheaper, at $20 against $29, because Mailtruss has no plan between 25,000 and 100,000. These are Resend's published list prices on 2026-11-15.
- How hard is it to switch from Resend to Mailtruss?
- Not hard. The send call is deliberately close to Resend's, so moving it is mostly renaming the client and swapping the key. Verify your sending domain first, because the DNS records differ. The migration guide shows the code before and after and lists the differences, such as scheduled_at taking an ISO 8601 time only.
- What does Resend have that Mailtruss does not?
- Resend lists automations and offers single sign-on as an add-on; Mailtruss has neither yet. Resend's paid plans can also keep sending past the monthly limit and bill the extra emails at $0.90 per 1,000, while Mailtruss stops at the limit.
Switching
The send API is close to Resend's, so moving a send call is mostly renaming the client. The migration guide shows the code before and after and lists what differs. Start free and send a test before you change anything.