Quick answer
Resend - Resend wins for most builders because its free tier is broader and more practical for day-to-day development, while AhaSend is better only if your free sending needs are very small and you want more generous domain handling.
How the free tiers compare
These two free tiers solve the same basic problem, but they are shaped differently. AhaSend’s free plan is narrowly focused on transactional sending: 1,000 emails per month, multi-region delivery, unlimited domains, and short retention, with no card required. That makes it simple and low-friction, but it runs out quickly. Resend’s free plan is more builder-friendly for working apps: 3,000 emails per month, a 100/day cap, REST, SMTP, SDKs, scheduled and batch sending, tracking, one custom domain, 30 days of retention, one webhook endpoint, automation runs, and AI credits. The tradeoff is that Resend requires a card on file and is less generous on domains and daily usage. Past the free tier, AhaSend’s first paid step is usage-based and not priced here, while Resend starts at $20/month and then charges for overages, which makes its cost path clearer.
AhaSend vs Resend free tier, side by side
| AhaSendFTV 48 | ResendFTV 30 | |
|---|---|---|
| Monthly email quotaResend also has a 100 emails/day limit on the free plan. | 1,000 emails/month | 3,000 emails/month |
| Daily email limitThis can matter if you send in bursts. | Not stated | 100 emails/day |
| Sending domainsAhaSend is much looser here on the free tier. | Unlimited domains | 1 custom domain |
| Data retentionResend keeps data longer on free. | 1 to 7 days | 30 days |
| API and SMTP accessCore sending access is present on both. | RESTful APIs and SMTP relay | RESTful API and SMTP relay |
| Webhook supportBoth support webhooks, but the free shape differs. | Webhook and inbound routing support | 1 webhook endpoint, all webhook events |
| Automation runsThis is a free-tier extra on Resend. | Not stated | 10,000 automation runs |
| AI creditsOnly Resend lists AI credits on the free plan. | Not stated | 5 AI credits/month |
| Credit card required?AhaSend says no card is required; Resend says a card is required. | No | Yes |
After you outgrow the free tier
AhaSend’s first paid step is Pro, labeled 25K emails/mo, but the input does not include a dollar price, so its post-free cost is usage-based and must be treated as varies by usage. Resend’s first paid tier is Pro at $20/mo for 50,000 emails/month, with $0.90 per 1,000 extra emails beyond that, so its pricing is clearer and easier to model. For small teams, Resend is the more predictable paid upgrade unless you need AhaSend’s domain or retention profile. AhaSend may be cheaper or pricier depending on its undisclosed usage rates, but that cannot be determined from the provided data.
Cost at real usage
| Usage | AhaSend | Resend |
|---|---|---|
| 1,000 emails/moBoth free plans cover this volume. | Free (within tier) | Free (within tier) |
| 3,000 emails/moResend still fits within its free monthly cap, though the 100/day limit can still apply. | Free (within tier) | Free (within tier) |
| 25,000 emails/moAhaSend’s input does not provide a dollar price for Pro. | Contact sales / varies by usage | $20/mo |
| 100,000 emails/moResend’s Scale plan includes 100,000 emails/mo. | Contact sales / varies by usage | $90/mo plus overages at $0.90 / 1,000 |
Estimates, not quotes. Usage-based rates change - verify with the vendor's pricing page before committing.
When to pick each one
Pick AhaSend when…
- You only need a small monthly email allowance and want no card required to start.
- You care more about unlimited sending domains than about extra workflow features.
- You want a simple transactional setup with multi-region delivery and short retention.
- You are testing email infrastructure and do not need daily volume beyond 1,000 emails.
Pick Resend when…
- You need more than 1,000 emails per month right away.
- You want developer workflow features like SDKs, scheduled emails, batch sending, and React Email.
- You need a longer free retention window and a built-in webhook endpoint.
- You are okay adding a card to get a more complete free development environment.
- You expect to use automation runs or AI credits in the same product.
Bottom line
For the most common builder scenario, Resend is the better pick because its free tier covers more real usage and more of the surrounding workflow, from SDKs to scheduled sends to longer retention. AhaSend is the cleaner free option only if you want a no-card starter with unlimited domains and very light monthly volume. Once you outgrow the free tier, Resend’s pricing is easier to understand from the provided data, while AhaSend’s paid cost cannot be pinned down here.
Read the full listings: AhaSend and Resend. Scores use the FTV methodology at /ftv. Browse more head-to-heads on /compare, or see the top-ranked free tiers on /top.