Indie Alternatives

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Indie alternatives to SendGrid

6 products made by independent developers and small teams that do what SendGrid does, 6 of them with a free plan. Free and open-source options come first.

At a glance

ProductPriceOpen sourceSelf-hostPlatforms
MailerSendFree plan––API, Web
MailgunFree plan––API, Web
PlunkFree planYesYesAPI, Web, Self-hosted
PostmarkFree plan––API, Web
ResendFree plan––API, Web
useSendFree planYesYesWeb, Self-hosted, API

The alternatives

1. MailerSend

Transactional email and SMS API

MailerSend, from the MailerLite team, offers an email and SMS API, SMTP relay, templates and inbound routing.

Free plan · API, Web · Website ↗

2. Mailgun

Email API for sending, receiving and validating email

Mailgun provides APIs and SMTP for sending and receiving email, plus email validation and deliverability tools.

Free plan · API, Web · Website ↗

3. Plunk

Open-source email platform for transactional email

Plunk is an open-source email platform built on AWS SES for sending transactional emails and simple automated campaigns via an API.

Free plan · API, Web, Self-hosted · Website ↗

4. Postmark

Transactional email delivery focused on speed and inbox placement

Postmark sends transactional and broadcast email via API or SMTP with separate message streams and detailed delivery logs.

Free plan · API, Web · Website ↗

5. Resend

Email API for developers, with React Email

Resend is a transactional and marketing email API with SDKs for many languages and templates written in React.

Free plan · API, Web · Website ↗

6. useSend

Open-source email sending platform built on Amazon SES

useSend (formerly Unsend) is an open-source alternative to Resend and SendGrid that sends through your own SES account.

Free plan · Web, Self-hosted, API · Website ↗

Questions

Is there a free alternative to SendGrid?

Yes. 6 of the 6 indie alternatives listed here have a free plan or are free: MailerSend, Mailgun, Plunk, Postmark and 2 more.

Is there an open-source alternative to SendGrid?

Plunk and useSend are open source.

Can I self-host an alternative to SendGrid?

Yes: Plunk and useSend can run on your own server.

What makes these alternatives to SendGrid “indie”?

They are built by independent developers or small teams rather than large companies. Each one is listed because it does the same core job as SendGrid.

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