Learn
Transactional email, explained by the people who run the servers
Honest comparisons with prices checked against each vendor's own page, migration guides with real API calls, and the deliverability work that keeps password resets out of spam.
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Compare
Groundmail next to Resend, Postmark, SendGrid, Amazon SES and Mailgun, with prices checked against each vendor's own pricing page.
- Groundmail vs ResendSame price at every tier, different ground underneath: our own mail servers and IPs, a transactional-only pool, dedicated IPs and dedicated servers.Updated
- Groundmail vs PostmarkBoth are transactional-first. Groundmail lists lower from 50,000 emails a month, runs its own servers and IPs, and offers dedicated servers.Updated
- Groundmail vs SendGridFree plan vs trial, prices from 50k to 1M emails a month, dedicated IPs and servers, and how the APIs differ.Updated
- Groundmail vs Amazon SESSES is cheaper per email; Groundmail runs the sending stack for you. Prices, dedicated options and when to pick each.Updated
- Groundmail vs MailgunPrices at 50k to 1M, free tiers, log retention, dedicated IPs and when Mailgun is the better pick.Updated
- Postmark vs Resend (and a third option)Resend is cheaper from 50,000 emails a month and has a bigger free plan; Postmark keeps history longer and is cheapest at 10,000.Updated
Migrate
Step-by-step guides for moving your sending to Groundmail, with real request examples.
- Migrate from SendGrid in 10 minutesField-by-field mapping from SendGrid v3, SMTP and webhook changes, suppression import and a safe cutover plan.Updated
- Migrate from Amazon SES to GroundmailStep-by-step: DNS, SendEmail field mapping, SMTP swap, events to webhooks, suppression export, canary and rollback.Updated
Guides
Deliverability and setup for transactional email: authentication, sender rules, IP reputation and choosing a provider.
- The best transactional email APIs in 2026 (verified prices)An honest, dated price list for twelve transactional email APIs, with dedicated IP and retention terms.Updated
- Why password reset emails go to spam (and how to fix it)The developer's checklist for reset emails that land in spam, arrive late or never arrive.Updated
- Google, Yahoo and Microsoft sender rules for transactional emailWhat Gmail, Yahoo and Outlook.com require of transactional senders, side by side, with a checklist.Updated
- Shared vs dedicated IP for transactional emailWhen a dedicated IP helps, when it hurts, and how it differs from a dedicated mail server.Updated
- SPF, DKIM and DMARC for transactional emailCopy-paste records, alignment explained, dig commands and a rollout plan for transactional senders.Updated
Put your transactional email on solid ground.
Start free on our transactional pool. Move to dedicated IPs or a dedicated server when you need the isolation. Same API either way.