The two closest services in shape: a transactional API with templates, an SMTP relay on every plan, webhooks, and a free plan that does not end. They part on size and price: MailerSend’s free plan is 500 emails a month and its Hobby plan is $5.60 for 5,000; Resend’s free plan is 3,000 a month and its Pro plan is $20 for 50,000. The table reads both from their own pricing pages, with the read date, and puts Notix in a separate third column so you can see where a service with more in the box sits against each.
MailerSend’s figures come from mailersend.com/pricing, read on 2026-09-13. Resend’s come from resend.com/pricing, read on 2026-09-12. The Notix column is read from its own pricing page and is there as a third option, not as the subject of this page.
| Criterion | MailerSend | Resend | Notix |
|---|---|---|---|
| Free tier | 500 emails a month, 1 domain, 100 API requests a day, 1 webhook, 1 template | 3,000 emails a month, 100 a day, 1 domain | 5,000 emails a month, 200 a day, no card, no end date |
| Entry paid plan | Hobby $5.60 a month billed yearly ($67.20 a year); $7 month to month | Pro $20 a month | Pro $15 a month |
| Included on that plan | 5,000 emails a month, then $1.50 per extra 1,000 (Starter: 50,000 for $35, $0.90 per extra 1,000) | 50,000 emails a month | 50,000 emails, usage past that metered on the same invoice |
| SMTP relay | Yes, on every plan including Free | Yes, on every plan | Yes, on every plan |
| SDKs | Node, PHP, Laravel, Python, Ruby, Go, Java | Node, Python, PHP, Ruby, Go, Java, Laravel, Rust, .NET | TypeScript, Python, Go, PHP |
| Webhooks | Yes, HMAC-SHA256 signed; 1 on Free and Hobby, 50 on Starter | Yes | Yes, signed, for email, contact and domain events |
| OTP / verification API | No | No | Yes, email and SMS codes |
| Deliverability check before sending | Email address verification as an add-on ($0.01 per address for the first 5,000; 10 credits on Free) | No | Yes, a pre-send check API |
| Billing outside USD | USD by card (EUR and GBP shown for information only) | USD by card | USD by card; naira and shillings from a prepaid wallet |
| SLA | 99.5% on Professional and above | Not stated on the pricing page | 99.9% on Pro, credits on the pricing page |
| Prices and limits read from the vendors' own pages: www.mailersend.com on 2026-09-13. Notix figures are from its own pricing page. | |||
Both free plans stay free. Resend’s is 3,000 emails a month, 100 a day, on one domain. MailerSend’s is 500 emails a month on one domain, capped at 100 API requests a day, with one webhook and one template. For a side project that sends a few hundred messages a month either will do; for anything that sends every day, Resend’s six-fold allowance is the difference between staying free and paying.
MailerSend’s Hobby plan is $5.60 a month billed yearly, or $7 month to month, for 5,000 emails, then $1.50 per extra 1,000. Its Starter plan is $35 for 50,000, then $0.90 per extra 1,000. Resend has one step: Pro at $20 for 50,000. So at 5,000 a month MailerSend is the cheaper paid plan by a wide margin, and at 50,000 Resend is $15 a month cheaper. Between the two volumes the answer depends on where you land.
Both are a JSON endpoint with templates and variables, and both include SMTP on every plan, the free plans included, so an existing SMTP integration moves to either with a credential change. Resend pairs its API with React Email for templates written as components; MailerSend has a template editor in the dashboard. Neither requires a client library.
Resend publishes libraries for Node, Python, PHP, Ruby, Go, Java, Laravel, Rust and .NET. MailerSend publishes Node, PHP, Laravel, Python, Ruby, Go and Java. Most stacks are covered by both; Rust and .NET teams get a first-party library only from Resend.
Both post delivery, bounce and complaint events. MailerSend signs its webhooks with HMAC-SHA256 and counts them by plan: one on Free and Hobby, fifty on Starter. MailerSend also sells email address verification as an add-on, $0.01 per address for the first 5,000 with 10 credits on Free; Resend has no validation product on the plans read for this table. Neither offers a pre-send deliverability check on the message itself.
Both bill in US dollars by card; MailerSend shows euro and pound prices for information only. MailerSend states a 99.5% service level on Professional and above; Resend’s pricing page does not state one. These are the commitments each vendor publishes, not measurements of either service’s uptime.
Pick MailerSend if you send a few thousand a month and want the cheapest paid tier, need address verification, or want a stated SLA on the higher plans. Pick Resend if the larger free plan carries you, you want the widest SDK set or React Email, or you send around 50,000 a month where its Pro plan costs less. The two are close enough in shape that the decision is mostly your volume.
On the same criteria: a free plan of 5,000 emails a month and 200 a day with no card and no end date, Pro at $15 a month for 50,000 emails with usage past that metered on the same invoice, SMTP on every plan, TypeScript, Python, Go and PHP SDKs, signed webhooks, an OTP and verification API for email and SMS codes, a pre-send deliverability check, and billing in naira or shillings from a prepaid wallet as well as US dollars by card. It has fewer SDK languages than either and no tier as small as MailerSend’s Hobby plan.
The full picture is on Notix vs MailerSend and Notix vs Resend.
A MailerSend alternative with a larger free tier, an OTP API, a pre-send deliverability check and wallet billing in naira and shillings.
AlternativesSame free tier shape, $5 a month less at 50,000 emails, plus OTP and deliverability APIs and naira or shilling billing.
CompareFree tiers, per-email pricing, the sending API, deliverability tooling and billing regions, side by side with a read date.
ComparePricing, sending API, deliverability tooling, SDKs and billing regions, side by side with a read date.
CompareEvery vendor in one table with read dates, and a straight answer to which transactional email API a startup should pick.
NotixA free plan with no card, and Pro at $15 a month for 50,000 emails. Only sent volume is metered.
Notix is free to try without a card: verify a domain, copy an API key, send one message, and compare it against the two above on your own traffic.