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Software · head to head

Quo vs Resend

Quo logo

Quo

Software

Formerly OpenPhone

From
Free
Rated
-
Full reviewWebsite
Resend logo

Resend

Software

Email API for developers to send transactional and marketing email

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Quo unlimited calling to US and Canadian numbers is subject to a Fair Usage Policy rather than being truly unlimited; Resend free tier is capped at 100 emails per day, which is restrictive for apps with bursty transactional volume.

Where they differ

Only the attributes on which Quo and Resend actually diverge.

Attributes where Quo and Resend differ
AttributeQuoResend
PlatformsWebweb, api

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Quo

Nothing recorded that Resend does not also cover.

Only in Resend

  • Email API and SDKs
  • Domain management
  • Audience and contacts
  • Automation workflows
  • Email analytics
  • Dedicated IPs

What people use each for

The jobs each tool is most often brought in to do.

Quo

No use cases recorded yet. See the Quo review.

Resend

  • Sending transactional emails from a web appnot Quo
  • Running marketing email campaigns to contact listsnot Quo
  • Automating onboarding or lifecycle email sequencesnot Quo
  • Tracking deliverability and engagement analyticsnot Quo

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Quo

  • Unlimited calling to US and Canadian numbers is subject to a Fair Usage Policy rather than being truly unlimited
  • Starter tier's $15/user annual rate requires prepaying annually; monthly billing costs $19/user, about 27% more
  • The Sona AI agent automation credits are capped at 1,000 free per plan before additional usage is billed

Resend

  • Free tier is capped at 100 emails per day, which is restrictive for apps with bursty transactional volume.
  • Marketing and transactional plans are billed and priced separately, so a product needing both must budget for two tiers.
  • Dedicated IPs are only available on the Scale plan and require a minimum daily send volume.

Pricing, plan by plan

Quo

Free

No published plan breakdown. See the Quo review.

Resend

Free
  • FreeFree
    • 3,000 emails/month
    • 100 emails/day
    • 3 domains
  • Pro$20/month
    • 50,000 emails/month
    • 10 domains
    • 100 AI credits/month
  • Scale$90/month
    • 100,000 emails/month
    • 1,000 domains
    • Slack and ticket support

Which should you pick?

Choose Quo if

  • You want to start without paying.
Quo review

Choose Resend if

  • You need email api and sdks.
  • You want to start without paying.
  • You work on web, api.
  • You also want domain management.
Resend review

Questions people ask

Is Quo or Resend better?
Neither clearly leads. Quo starts at Free and Resend at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Quo or Resend?
Quo starts at Free and Resend at Free.
Does Quo or Resend run on more platforms?
Quo runs on Web. Resend runs on web, api.
Can I use Quo for free?
Both have a free tier, so you can try either at no cost before committing.
What can Quo do that Resend cannot?
Resend covers Email API and SDKs, Domain management, Audience and contacts, Automation workflows.

Answered from the vendors’ own pages

Resend: What does Resend cost?

Transactional email starts free for 3,000 emails/month, then Pro is $20/month for 50,000 emails and Scale ranges from $90 to $1,150/month for up to 2.5M emails. Marketing email is priced separately by contact count, starting free for 1,000 contacts.

Source
Resend: Is there a free plan, and what are its limits?

Yes, the free transactional plan allows 3,000 emails per month capped at 100 per day across 3 domains, and the free marketing plan allows up to 1,000 contacts.

Source
Resend: How is usage metered?

Transactional plans are metered by number of emails sent, with overage billed per 1,000 emails. Marketing plans are metered by number of contacts rather than emails sent.

Source
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