Reviewers describe Resend as a simple, developer-first way to handle transactional email, with fast setup, clean APIs, clear logs, and strong deliverability. Users repeatedly say integration takes minutes and removes the usual email maintenance burden, especially when paired with React Email or serverless tools. Makers of Refgrow and Rectify say they use it for onboarding, alerts, notifications, and support replies because it “just works.” Complaints are limited but real: sparse Python examples, some missing marketing or unsubscribe features, domain setup friction, and one report of serious delivery delays.

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Pros

developer-friendly API (21)

easy setup (21)

reliable delivery (17)

fast integration (12)

high deliverability rates (9)

simple UI (9)

React Email integration (8)

free tier (6)

seamless integration (4)

dynamic templating (3)

Cons

slow performance (2)

Pros

Cons

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•2 reviews

What's great

free tier (6)easy setup (21)high deliverability rates (9)

Switched to Resend for Signum's transactional emails after getting burned by another provider's deliverability. Setup took maybe 30 minutes including DNS verification. Using it for watchlist alerts — when a domain a user is tracking changes risk score they get an email. Works reliably, the logs actually show you what happened to each email which sounds basic but wasn't always the case with what I used before.

What needs improvement

Would love more examples for Python/FastAPI specifically, most of the docs lean toward JS. Had to figure out a few things by trial and error.

vs Alternatives

Transactional emails for Signum — watchlist alerts, welcome emails, weekly digest. Needed something with clean API and reliable deliverability.

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Reliability

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191 views2mo ago

•1 review

What's great

easy setup (21)reliable delivery (17)developer-friendly API (21)simple UI (9)fast integration (12)

I’ve been using Resend in real projects and honestly it’s been a great experience. Setup is fast, the docs are super clear, and everything just works without friction. It feels built by people who actually understand developers and product teams. If you want reliable email delivery without the usual headaches, Resend is a no-brainer.

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Ease of use

Reliability

Value for money

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234 views3mo ago

•1 review

What's great

free tier (6)easy setup (21)developer-friendly API (21)React Email integration (8)

Its very easy to setup

What needs improvement

I love resend, but I wish there was a way to configure it such that people don't have to set up their own domain on resend for my web app to work. I am building a cold email marketing platform by the way and that means sending tons of emails from one domain.

vs Alternatives

Because I needed a reliable email integration for my cold email marketing platform and it worked seamlessly and gave me what I wanted

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Ease of use

Reliability

Value for money

Customization

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281 views6mo ago

•2 reviews

The amount of mental energy I have to spend on configuring/maintaining email actions has basically gone to zero after starting with Resend. I heard about them when I had a specific use case I was trying to solve and I was amazed how quickly and easily I was able to integrate it, and even moreso that it has continued to work so reliably. In my experience, email providers and apis tend to be somewhat fragile, so I am glad I found Resend.

What's great

reliable delivery (17)fast integration (12)

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34 views2yr ago

•1 review

What's great

Just used it tonight - It integrates pretty well with lovable and vercel.

vs Alternatives

It was a natural part of the flow with lovable vibe coding - not too hard for me to create the records in vercel.

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Ease of use

Reliability

Value for money

Customization

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97 views4mo ago

•2 reviews

This service is just not reliable at all. It's currently taking me over 20 minutes to send a single email. I can see they've been sent in the dashboard, and configurations are exactly the same as yesterday when they were working perfectly. If i receive decent support I will change my rating, otherwise I will be changing my provider. This is a critical part of our infrastructure and I require the highest quality levels.

What needs improvement

slow performance (2)

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35 views1yr ago

•1 review

Switched to Resend after all the low-code/no-code options failed to deliver their promised simplicity. As a founder already tackling the myriad challenges with your product, emails are the last thing you'd want to struggle with. However, it's tough to ignore them as they serve as a critical interface to connect with users. But we were lucky. We found Resend. It's seamless, reliable and consistent, and we haven't had to look back on our emails since we first integrated them. Resend is a no-brainer because they understand the developer.

What's great

seamless integration (4)reliable delivery (17)

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26 views2yr ago

•2 reviews

What's great

high deliverability rates (9)

Coding email templates used to be a nightmare until Resend and React Email came along. Being able to build emails using React components is a game-changer. It makes maintaining and testing transactional emails actually fun. Highly recommended!

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Ease of use

Reliability

Value for money

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59 views4mo ago

•3 reviews

Hi @zenorocha Congratulations to your launch. This really looks like something I will integrate in my apps. For me, observability is the main paintpoint when using other tools. In my opinion, a dashboard that visualises the logs would be a nice add-on. I would see bounce-rates, spam-rates, etc. immediately. When this information can be collected in a structured way, it could be very helpful for data-analysis, e.g. to see whether a combination of words triggers the likelihood of someone marking email as spam, etc. All the best for your launch, what I see now, I think it is a great product!

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28 views2yr ago

•4 reviews

I’ve been using Resend to handle transactional emails, and it’s been a lifesaver. Setting up, testing, and sending emails at scale is incredibly easy, and the developer-friendly tools make integration smooth and fast. What really stands out is how reliably emails reach users’ inboxes — no more worrying about spam folders. For anyone building apps or services that rely on email, Resend is a must-have.

What's great

easy setup (21)reliable delivery (17)developer-friendly API (21)fast integration (12)

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16 views9mo ago