Alternatives · Email Sending
Inbound alternatives
As of Nov 13, 2026, the best Inbound alternative for most people is Resend (2.6 GPA), first in our ranking of email sending services. It's also the best free one.
Inbound compared with 5 alternatives: Resend, Postmark, Mailgun, Twilio SendGrid and MailPace.
Inbound is a paid product, starting at $9 per month for 5,000 emails. 3 of the 5 alternatives are free or have a free plan. 2 more offer a free trial.
Listings checked up to Nov 13, 2026 · Where the facts come from
Black Friday: is there a Inbound sale?
At a glance
Price against what you get
Inbound starts at $9 a month and scores 2.0 out of 4 on features, ease of use and platforms. None of the 5 alternatives on this chart both scores higher and starts lower.
Resend, Postmark, Mailgun, Twilio SendGrid and MailPace score higher without starting lower.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
How each one differs from Inbound
Resend
Developer email API with React Email templates and a free tier
- Resend starts at $20 per month for 50,000 emails, billed monthly.
- Resend has a free plan, which Inbound lacks.
- Resend also covers email campaigns.
- Resend does not cover AI agents, which Inbound does.
Suits: Developers building with Node.js, Next.js or React
Postmark
Transactional email API and SMTP, with broadcasts on a separate stream
- Postmark starts at $15 per month for 10,000 emails.
- Postmark has a free plan, which Inbound lacks.
- Postmark also covers dMARC.
- Postmark does not cover AI agents, which Inbound does.
Suits: Software teams whose password resets and receipts must arrive fast
Mailgun
Email API and SMTP relay for developers, with list validation
- Mailgun starts at $15 per month for 10,000 emails.
- Mailgun has a free plan, which Inbound lacks.
- Mailgun also covers email verification.
- Mailgun does not cover AI agents, which Inbound does.
Suits: Developers sending and receiving email from an app
Twilio SendGrid
Twilio's email API and SMTP service, priced by monthly email volume
- Twilio SendGrid starts at $19.95 per month for 50,000 emails.
- Twilio SendGrid also covers email verification.
- Twilio SendGrid does not cover AI agents, which Inbound does.
Suits: Developers adding transactional email to an app
MailPace
EU-hosted transactional email API and SMTP, without open tracking
- MailPace starts at $10 per month for the first 10,000 emails.
- MailPace does not cover AI agents, which Inbound does.
Suits: Developers who want a plain API and SMTP service hosted in the EU
Limits worth knowing in Inbound
- There is no free plan or trial listed.
- Extra domains cost $3.50 per domain per month.
- Extra capacity is $16 per 50,000 received plus 50,000 sent a month.
- The product centers on receiving and replying; the pricing page does not describe bulk or marketing sending.
Common questions
What are the alternatives to Inbound?
The alternatives to Inbound in this directory are Resend, Postmark, Mailgun, Twilio SendGrid and MailPace. Each one has a side-by-side comparison with Inbound.
Is there a free alternative to Inbound?
Yes. Resend, Postmark and Mailgun have a free plan alongside paid ones.
When were these prices checked?
Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.