Compare transactional email services
Viesti relays transactional email, the receipts, password resets, sign-in codes and alerts your app sends, over SMTP and a one-endpoint HTTP API. These pages compare it with Postmark, SendGrid, Mailgun, Amazon SES and Resend, using each vendor's own pricing and documentation.
Who Viesti is for
- Apps that send mail a user triggered or expects, and can speak SMTP or post JSON.
- Low to moderate volume on a small budget. The free plan covers 75 emails a day and 2,000 a month with no time limit; the paid plan is $5 a month for 50,000 emails, then $0.10 per 1,000.
- Senders who want no marketing mail on their IPs. Viesti does not accept marketing mail on any plan, and free and paid workspaces send from separate IP pools.
Who Viesti is not for
- Newsletters, campaigns, contact lists or scheduled sends. Viesti screens content before relay and rejects or quarantines marketing mail.
- Open and click tracking or engagement analytics. Viesti adds neither.
- Delivery webhooks, a status API, stored templates or inbound email. The API has one endpoint,
POST /v1/send; delivery status is in the dashboard's Activity log.
- Official SDKs. You use your language's SMTP library or an HTTP client; the guides show how for common frameworks.
- Several people on one account. A workspace belongs to the email address that signed in with GitHub or Google; there are no invitations or roles.
- Mail that must never wait. Screening can hold a flagged message in quarantine until staff review it.
- Buyers who need published compliance certifications, such as SOC 2, or a choice of sending region. Viesti offers neither.
Summary
Competitor figures come from each vendor's pricing and documentation pages, linked in each cell. Checked 26 September 2026. Prices are in US dollars before tax and change over time; confirm on the linked page before you decide.
|
Viesti |
Postmark |
SendGrid |
Mailgun |
Amazon SES |
Resend |
| Entry paid plan |
$5/month, 50,000 emails |
$15/month, 10,000 emails |
$19.95/month, 50,000 emails |
$15/month, 10,000 emails |
No monthly fee on à la carte pricing, $0.10 per 1,000; new accounts start on the Essentials plan at $0.16 per 1,000 |
$20/month, 50,000 emails |
| Extra emails on that plan |
$0.10 per 1,000 |
$1.80 per 1,000 |
$0.0013 per email |
$1.80 per 1,000 |
No included volume; every email is billed |
$0.90 per 1,000 |
| Free allowance |
75/day and 2,000/month |
100/month |
100/day for a 60-day trial |
100/day |
Up to $200 in AWS Free Tier credits for new AWS customers |
100/day and 3,000/month |
| SMTP relay |
Yes |
Yes |
Yes |
Yes |
Yes, per AWS Region |
Yes |
| HTTP API |
One send endpoint |
Yes, with batch sending |
Yes |
Yes |
Yes |
Yes, with batch sending |
| Marketing mail on the same platform |
No |
Broadcast streams on separate IPs |
Marketing Campaigns, a separate plan |
Mailing lists and send-time optimization |
Yes |
Broadcasts, separate marketing plans |
| Dedicated IPs |
Dedicated plan, custom pricing |
$50/IP/month from 300,000 emails/month |
1 included from Pro ($89.95/month) |
1 included from Foundation 100k; more at $59/IP/month |
$24.95/IP/month (standard) |
$30/month add-on on Scale |
| Open and click tracking |
No |
Yes, when enabled |
Yes |
Yes |
Yes, through event publishing |
Yes, off by default |
| Delivery webhooks |
No |
Yes |
Yes (Event Webhook) |
Yes |
Event publishing to SNS, EventBridge and others |
Yes |
| Stored templates |
No |
Yes |
Yes (dynamic templates) |
From the Foundation plan |
Yes |
Yes |
| Inbound email |
No |
Pro and Platform plans |
Yes (Inbound Parse) |
Yes (routes) |
Yes, in Regions that support it |
Yes |
Each comparison below covers pricing, IP pools, domain authentication, tracking, what Viesti lacks, and the steps to migrate.
- Viesti vs PostmarkA Postmark alternative for transactional email: how Viesti and Postmark differ on price, free tier, SMTP, IP pools and tracking, and how to switch.
- Viesti vs SendGridA SendGrid alternative for transactional email: how Viesti and SendGrid differ on price, free trial, SMTP, IP pools and tracking, and how to switch.
- Viesti vs MailgunA Mailgun alternative for transactional email: how Viesti and Mailgun differ on price, free tier, SMTP, domains and tracking, and how to switch.
- Viesti vs Amazon SESAn Amazon SES alternative for transactional email: how Viesti and SES differ on pricing, sandbox, SMTP credentials and DNS, and how to switch.
- Viesti vs ResendA Resend alternative for transactional email: how Viesti and Resend differ on price, free tier, SMTP, API fields and tracking, and how to switch.
Viesti