Unosend review (2026): is it worth paying for?
Credit-based email API with REST and SMTP relay
Black Friday: is there a Unosend sale?
Unosend report card
Fair · out of 4.0 · graded Nov 13, 2026
Best for pay-as-you-go email API for developers
Unosend sells prepaid sending credits at $4 per 10,000 emails, through a REST API or SMTP, with no subscription. It gives 3,000 credits once at signup and no recurring free plan, and the site banner says the company is being acquired.
Who Unosend is for
- Fits if you send a few thousand emails a month and want no subscription
- Works for developers who only need an API and SMTP relay
Who Unosend is not for
- Skip it if you want a recurring free plan, because the 3,000 credits come once at signup
- Watch out: the cards say credits last 90 days with no minimum, while the FAQ data says 6 months and a $20 minimum
- Watch out: the site banner says Unosend is being acquired, with service continuing as normal
- Pricey if you need a dedicated IP, at $30 a month billed annually ($360 a year)
- Too light for marketing email, with no campaign tools on the page
Why Unosend gets a 2.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for money$4 per 10,000 emails, prepaid, with no monthly fee. The vendor does not say what a plan includes beyond sending, so this sits in the ordinary range for email APIs.
- CFree plan and trial3,000 credits are given once at signup, not each month. The page does not say whether a card is needed.
- CFeaturesREST API, SMTP relay, delivery logs, domains, webhooks and tracking. A dedicated IP is $30 a month, billed annually, and the site's own cards and data disagree on how long credits last.
- CEase of useNo rating on record. It is an API and SMTP relay, so you add domains and wire it into code.
- CPlatforms and integrationsWeb dashboard, API and SMTP. No integrations list, no apps.
What these grades rest on. Graded from this listing, whose facts were read from Unosend's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
Make Unosend? Put this grade on your site
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<a href="https://toolgpa.com/tools/unosend#review"><img src="https://toolgpa.com/badge/unosend.svg" alt="Unosend: 2.0 GPA on ToolGPA" width="196" height="56"></a>Where Unosend stands among email sending services
Unosend's GPA of 2.0 is higher than 9 of the 50 other email sending services we grade, and level with 4.
Each grade against the category
Every bar is all 51 email sending services we grade, cut by the letter each got. Unosend’s own letter is outlined.
- CValue for moneyAbove 8 of 50, level with 16
- CFree plan and trialAbove 11 of 50, level with 23
- CFeaturesAbove 0 of 50, level with 29
- CEase of useAbove 7 of 50, level with 43
- CPlatforms and integrationsAbove 0 of 50, level with 16
Keep Unosend, or make your own?
Keep it
To replace Unosend you would be making mail servers with a good name among inbox providers. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 37 of the 50 other email sending services grade higher.
What you could not
- Mail servers with a good name among inbox providers.
- An API that other software can build on.
What this rests on. Unosend’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Unosend?
Unosend is an email API for developers that sells prepaid credits instead of monthly plans. It offers a REST API and an SMTP relay, webhooks, open and click tracking, and SPF, DKIM and DMARC records. The site says the company is being acquired and that service continues as normal.
Worth knowing
- The site banner says Unosend is being acquired, with service continuing as normal.
- The pricing cards and the page's structured data disagree: the cards say credits last 90 days with no minimum, while the FAQ data says 6 months with a 5-credit ($20) minimum.
- A dedicated IP is $30 per month, billed annually ($360 a year).
- There is no recurring free plan; the free credits are given once at signup.
Key features
- REST API and SMTP relay
- Send through an HTTP API or standard SMTP on ports 465 and 587.
- Delivery logs
- Real-time logs of sends, deliveries, bounces, opens and clicks.
- Sending domains
- Unlimited domains with SPF, DKIM and DMARC records.
- Webhooks and tracking
- Webhooks plus open and click tracking.
- Auto top-up
- Credits can be topped up automatically when the balance falls below a set level.
- Dedicated IP
- An optional dedicated sending IP for high-volume senders.
Unosend pricing
As of Nov 13, 2026, Unosend is a paid product with a free trial, starting at $4 per 10,000 emails, prepaid credits.
- Starts at
- $4 per 10,000 emails, prepaid credits
- Free plan
- None
- Free trial
- 3,000 free credits on signup
| Plan | Price | What you get |
|---|---|---|
| Starter | $4one-time top-up per 10,000 emails, used as you go | Prepaid credits with no subscription, at $0.0004 per email. The pricing cards say credits last 90 days and that you can top up any amount. |
| Business | Custom | Volume discounts for teams sending 500,000 or more emails, with an account manager, SLA and custom credit validity. |
Read from unosend.co on Nov 13, 2026. Prices change, so confirm with Unosend before you buy.
Unosend alternatives
- Unosend vs Resend
Free plan · from $20/mo
- Unosend vs Twilio SendGrid
Free trial · from $19.95/mo
- Unosend vs Mailgun
Free plan · from $15/mo
- Unosend vs Postmark
Free plan · from $15/mo
- Unosend vs Amazon SES
Free trial
Common questions
Does Unosend have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Unosend is listed for Web.
Does Unosend have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Unosend is listed for Web.
Is Unosend open source?
Unosend is not described as open source on its own site, as read on Nov 13, 2026.
Does Unosend have an API?
Yes. Unosend offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.