Catalog entry · InboxRatio Editorial

Resend: User reviews, pricing & features

Resend is a developer-first transactional email API — a newer brand in the transactional segment whose raw search volume we discount because the word doubles as a generic verb. resend.com served the developer email API homepage directly when we verified it in August 2026.

The transactional Pro plan includes exactly 50,000 emails per month for $20 — tied with Mailtrap for the cheapest USD tier passing our functional checks (custom domain plus webhooks) at that volume — with opt-in overage at $0.90 per 1,000. A free plan sends 3,000 emails per month under a 100-per-day cap. Pricing checked 19 August 2026. The curve steepens beyond Pro's range: Pro scales to 100,000 emails at $35/month, but 500,000 emails requires Scale at $350/month, moving Resend from a cheapest-tie at 50,000 emails to above the category median at the top volume (multi-volume capture, 21 August 2026).

Measured · September 2026

Our deliverability test

84/100Good deliverability

Placement

Inbox91.6%
Tabs (Promotions / Updates)0.8%
Spam5.7%
Missing1.3%
Bounced0.6%

By mailbox provider

Gmail94/100
Outlook73/100
Yahoo86/100

From our pricing dataset

Pricing at a glance

Tier	Monthly price	What's included
Free	$0/mo	3,000 emails/mo
Pro	$20/mo	50,000 emails/mo
Scale	$90/mo	100,000 emails/mo

Pricing checked 19 August 2026 · monthly billing, prices as shown by the vendor.

From our feature dataset

Deliverability capabilities audit

The 17 deliverability capabilities we check every vendor for — authentication help, IP management, list hygiene, and reputation tooling. This audits what Resend documents; it is separate from our tested deliverability ranking.

15 of 17 documented capabilities

Yes:
SPF assistance
'If you have a verified domain with Resend, it means you are already passing SPF and DKIM'
Yes:
DKIM setup
DKIM configured as part of domain verification (same quote)
Yes:
DMARC support
DMARC guide: add TXT _dmarc record, 'start with a policy of p=none; before moving to a stricter policy'; BIMI also covered
Partial:
Dedicated IPpartial
Add-on '$30 / mo' on Scale/Enterprise for senders exceeding 3,000 emails/day
Yes:
Shared IP pools
'all Resend users use our shared IPs, which are a collection of IPs shared across many senders'
Partial:
IP warmingpartial
Only with dedicated-IP add-on: 'automatic warmup, monitoring, and autoscaling'
Partial:
Automated warmuppartial
'automatic warmup' bundled with the dedicated-IP add-on (Scale/Enterprise)
Partial:
IP pools managementpartial
Purchasable dedicated IP pool (requires Transactional Scale or Marketing Pro and >3,000 emails/day); Resend-managed — 'scales your pool dynamically', 'we do not expose the list of IPs in your dedicated pool'
Yes:
Bounce management
Bounces classified Permanent/Transient/Undetermined with subtypes; permanent bounces added to the suppression list and skipped on later sends

Yes:
Suppression lists
'Any address added to the suppression list will be skipped across all your domains and subdomains'; origins bounce/complaint/manual; remove via dashboard or API
Yes:
Complaint management
Suppression origin 'complaint' (recipients marking emails as spam) — address auto-suppressed; 'suppressed again automatically' if it complains again
Yes:
Feedback loop handling
Provider complaint reports become email.complained events and suppressions; caveat stated: 'Not all Inbox Service Providers return a complained event, most notably, Gmail/Google Workspace'
Partial:
Reputation monitoringpartial
'monitoring' bundled with dedicated-IP add-on; no customer reputation dashboard stated otherwise
Not documented:
Blacklist monitoringnot documented
Partial:
Deliverability analyticspartial
Delivery metrics tracked; no inbox-placement testing product stated
Not documented:
Deliverability consultingnot documented
Support tiers only (ticket/Slack/priority); no consulting product stated — pass 2026-08-24
Yes:
Domain authentication guidance
Domain verification docs + DMARC/BIMI implementation guides

Items marked — are not documented by the vendor. In this category, silence is itself a signal. How we read vendor claims: methodology.

From our feature dataset

Resend feature matrix

What the vendor documents, category by category. ◐ marks tier-gated or limited capabilities; — means the vendor does not document it.

Email6 of 6 documented

Partial:
Marketing campaignspartial
Broadcasts — 'Bulk marketing emails to your Contacts' (newsletters, promotions) with a no-code editor; not a full marketing suite
Yes:
Transactional email
Core product — 'Send transactional and marketing emails at scale'
Yes:
SMTP relay
'SMTP relay' listed as a universal feature on all plans
Partial:
Bulk sendingpartial
Broadcasts handle 'queuing, throttling, and scheduling'; broadcast reach limited by plan contact counts, not email volume
Yes:
Email templates
'Turn your emails into reusable templates'
Partial:
Drag-and-drop editorpartial
'Compose, schedule, and send marketing emails using a no-code editor directly in your Dashboard' — drag-and-drop not explicitly named

Automation6 of 6 documented

No:
Email sequences
No automation product — sending API/infrastructure plus Broadcasts only
No:
Drip campaigns
Not offered
Partial:
Event-based automationpartial
Webhooks (all plans) push message events for customer-built automation; no built-in automation
No:
Behavioral automation
Not offered
No:
Workflow builder
Not offered
Yes:
Conditional logic
Automations include a Condition step that 'Branches the workflow based on rules' (triggered by custom events)

AI3 of 6 documented

Partial:
AI email generationpartial
'AI building tools' referenced for Broadcasts; specifics not documented on fetched pages
Not documented:
AI subject linesnot documented
Not documented:
AI content optimizationnot documented
Not documented:
AI segmentationnot documented
No:
AI campaign recommendations
Not offered
Partial:
AI agent / assistantpartial
Official MCP / agent access only, no native in-product agent documented — 'Agent Email Inbox' on homepage; Broadcasts 'send through your agent with MCP'

Personalization3 of 4 documented

Yes:
Segmentation
'Organize your contacts into segments and send bulk emails to only targeted contacts'
Not documented:
Dynamic contentnot documented
Yes:
Personalization variables
'Custom Template variables' — up to 50 per template, string/number types, optional fallback value used 'if you fail to provide a value in your call'
No:
Behavioral targeting
Not offered

Analytics4 of 4 documented

Yes:
Opens & clicks
'Track performance metrics such as delivery, click, and open rates'; open/click tracking enabled per domain
No:
Conversion tracking
Not offered
Partial:
Campaign reportingpartial
Broadcast delivery/open/click metrics; '30-day data retention' on non-Enterprise plans
Partial:
Deliverability analyticspartial
Delivery-rate metrics in dashboard; no inbox-placement testing product stated

Developer features5 of 5 documented

Yes:
API
'email API for developers' with 'full OpenAPI 3.0 specification'
Yes:
SMTP API
SMTP relay on all plans
Yes:
Webhooks
'webhooks' listed as a universal feature across all tiers
Yes:
SDKs / client libraries
Official libraries for Node.js, Python, PHP, Ruby, Go, Java, Laravel, Rust, .NET
Yes:
Public API docs
Public docs incl. 'OpenAPI spec (YAML/JSON)'

Marketing platform7 of 7 documented

No:
CRM
Not offered — developer email platform
No:
Signup forms
Not offered
No:
Popups
Not offered
No:
Landing pages
Not offered
No:
Chatbots
Not offered
No:
SMS
Not offered
No:
Other channels
Email-only platform

E-commerce5 of 5 documented

No:
Store integrations
Not offered — no store apps
No:
Cart recovery
Not offered
No:
E-commerce automation
Not offered
No:
Purchase tracking
Not offered
No:
Product recommendations
Not offered

Features checked 10 September 2026 · from vendor documentation and official feature pages.

AI & agent readiness · checked 2026-09-10

Resend and AI agents

92/100AI-native

Official MCP server · hosted, connect by URL

AI agents and assistants can work with Resend directly through Resend MCP Server: send, batch, schedule and cancel email; read inbound email; manage contacts, broadcasts, domains, segments, topics and API keys

MCP server
Official, documented 2025-03-09.
45/45
Official agent skills
Resend skills (resend, react-email, email-best-practices, resend-cli, agent-email-inbox) (Agent Skills (Claude Code, Cursor, Codex plugins))
10/10
AI assistant apps
Claude, ChatGPT, Cursor
20/20
AI-friendly docs
llms.txt · OpenAPI spec · AI docs page
15/15
Built-in AI features
AI email generation (partial), AI agent / assistant (partial)
2/10

Scored 0–100 from public evidence: an official MCP server weighs most (40, +5 when hosted), then official agent skills, AI assistant apps, AI-friendly docs and built-in AI features. "Not found" means we couldn't locate it on Resend's public pages or the official MCP registry, not that it can't exist. This is context, never part of the Deliverability Score.

Captured from the vendor website

Resend in screenshots

Resend website: homepage hero section — Resend homepage, August 2026
Source: vendor website · 21 August 2026

Resend website: product/features section — Homepage "Everything in your control" section with delivery metrics dashboard UI
Source: vendor website · 21 August 2026

Independent review platforms — shown as context; never part of our measured Deliverability Score

What users say

Trustpilot

2.4/5

19 reviews

Checked 21 August 2026

4.8/5

10 reviews

Checked 10 September 2026

Weighted average 2.9/5 across 29 reviews.Limited review base

Trustpilot counts for half of the average: it is an open platform where businesses can't remove negative reviews. G2 and Capterra share the other half, and a platform with fewer than 100 reviews counts proportionally less.

Same primary category, from our catalog

Alternatives to Resend

Mailtrap

Email delivery platform combining a sending API/SMTP service with a testing sandbox; each product is priced separately.

View profile →

SMTP2GO

SMTP relay and transactional email delivery service with unlimited verified sender domains on paid plans.

View profile →

Bird

Omnichannel platform, formerly MessageBird, with email as a core product; the retired SparkPost brand now points to Bird's email pages.

View profile →

Selected by catalog rule — same primary category, same depth tier first, then catalog demand order. Never hand-picked.

Generated from our datasets — every value verified and dated

Frequently asked questions

What is Resend?

Resend is a transactional email service in the InboxRatio catalog, also covering developer email infrastructure. Its regional focus is Global.

How much does Resend cost?

Paid Resend plans start at $20/mo (Pro tier), prices as shown by the vendor, last checked 19 August 2026.

Does Resend document its deliverability capabilities?

Resend documents 15 of the 17 deliverability capabilities we audit every vendor for (authentication help, IP management, list hygiene, reputation tooling). This audits what the vendor documents — it is separate from our measured Deliverability Score, and undocumented items are themselves a signal. How we read vendor claims.

What do users say about Resend?

Across 29 reviews on Trustpilot and G2, Resend averages 2.9/5, with Trustpilot counting for half of the average. User ratings are shown as context only — never part of our measured Deliverability Score.

Has Resend's deliverability been tested by InboxRatio?

Yes — Resend was measured in our seed-list deliverability test on 2 September 2026. Results publish to the email deliverability ranking; the full protocol is documented in our methodology. How we test.

What are the main Resend alternatives?

From our catalog, the closest alternatives are Mailtrap, SMTP2GO and Bird — services sharing Resend's primary category (transactional email), selected by a neutral catalog rule, never hand-picked.