Resend review

Resend is an email API and set of tools for sending transactional and marketing email. Developers can send through its API or use SDKs for Node.js, Ruby, Python, PHP, Go, Rust, Java, Elixir, and .NET. The product also includes test mode, which lets developers simulate events without sending real emails, and webhooks for notifications about delivery, opens, bounces, and clicks.

For campaign and audience work, Resend offers contact imports and personal attributes. Its deliverability features include DNS monitoring, domain authentication, suppression lists, and regional sending. So it covers more than the send request itself, though its core pitch is still developer tooling rather than a full marketing suite.

The Free plan costs $0 and includes 100 emails a day, 3 inboxes, 3 custom domains, 30-day data retention, and 5 AI credits a month, according to the pricing information checked on 2026-11-06.

Resend’s main appeal is a developer-focused sending workflow: an API, SDKs across nine listed languages, test mode, and webhooks for email events. That gives teams ways to build and inspect sending flows without treating email as a manual campaign-only process. Contact management and deliverability tools add useful operational pieces, including domain authentication, DNS monitoring, and suppression lists.

The Free plan is a practical place to start for a small project: it includes 100 emails daily, 3 inboxes, 3 custom domains, and 30-day data retention. That makes the current free domain allowance less restrictive than the one-domain limit mentioned in an older Reddit discussion; another commenter later noted that Resend allowed 3 domains on Free.

Some developers praise the setup and API. In one r/webdev thread, commenters described Resend as easy to set up and its API as cleaner than SendGrid’s. A commenter on r/SideProject said they were happy using it for Supabase Auth emails. Those are individual reports, not a guarantee that every integration will be trouble-free.

The biggest buying problem is price transparency. The pricing information checked on 2026-11-06 lists Free at $0, but does not publish monthly prices for Pro, Scale, or Enterprise. It also says there is no annual billing discount. Transactional overage rates are not published, so teams cannot calculate the paid bill from the listed plan limits alone.

The plan caps matter: Pro includes 3 inboxes, 10 custom domains, and 5 webhook endpoints; Scale includes 3 inboxes, 1,000 custom domains, and 10 webhook endpoints. Both have no daily sending limit, but that does not mean sending is unlimited at no extra cost. Scale adds $30/month dedicated IPs only above 3,000 emails a day, while SSO costs $150/month on Scale and is included on Enterprise. Extra domains cost $20/month per 100 on Pro and Scale; extra inboxes are $1 each monthly on paid plans with pay-as-you-go enabled.

Reliability reports are mixed. One r/SideProject commenter reported bugs and slow performance, and another described delays of over a minute for confirmation emails. Those are anecdotes, but they are worth weighing for time-sensitive messages.

Resend’s Free plan costs $0 per month and includes 100 emails a day, 3 inboxes, 3 custom domains, 30-day data retention and 5 AI credits monthly. That daily cap makes it a limited starting point for senders with growing volume.

Pro and Scale remove the daily sending limit, but their monthly prices are not published on the vendor's site. So the jump from Free—and from Pro to Scale—can’t be priced here. Pro includes 10 custom domains and 5 webhook endpoints; Scale raises those caps to 1,000 domains and 10 webhook endpoints. Enterprise pricing is also unpublished and terms are flexible.

There’s no annual billing discount: Resend offers monthly plans only. Add-ons can change the bill: extra domains cost $20/month per 100 on Pro or Scale; Scale dedicated IPs cost $30/month and are available above 3,000 emails a day. SSO costs $150/month on Scale and is included on Enterprise. Extra inboxes are $1 each per month on paid plans with pay-as-you-go enabled. Transactional overage rates are not published.

A move to Resend is likely to involve developer work: the product is API-first, with SDKs listed for nine languages, plus webhooks for delivery, opens, bounces and clicks. Plan to update sending integrations and check event handling. If you use Resend’s contact management or deliverability tools, account for importing contacts and configuring DNS authentication, suppression lists and regional sending.

The published information does not say whether contacts, analytics or campaign data can be exported, or how much history an export includes. Resend lists 30-day data retention on Free; retention terms are flexible on Enterprise. Confirm what you can take with you before moving production email.

The brief flags mixed reliability reports, but includes no Reddit posts or comments to substantiate specific reasons people leave. We can’t responsibly attribute delays or other complaints to Reddit from this material. Treat delivery reliability and exit options as items to verify before switching, not established findings.