A "migrate from SendGrid" query deserves a better destination than a generic evaluation guide — and so do "Mailgun vs Orbit," "Postmark alternatives," and "an honest look at Amazon SES." This is the hub for all four: why transactional senders re-evaluate their provider, the head-to-head page for each vendor, the migration skeleton that moves you, and an FAQ pointing into the buyer's guides. The evaluation guide covers the criteria; this post covers the vendor-specific path.
Why transactional senders re-evaluate their email API provider
The same three triggers come up in every evaluation:
- Deliverability that is a queue, not a control. On a shared IP pool your password-reset latency depends on the noisiest sender in your neighborhood. The re-evaluation starts the day you realize dedicated IPs, warmup, and reputation are either your own problem to engineer or a managed schedule you pay a support tier to touch.
- Pricing tiers that reopen at every volume step. A quoted per-thousand rate that lives in a sales email is fine until procurement asks for the real model. Headline rates diverge once dedicated IPs, event destinations, inbound parse, and support tiers are priced in — so the evaluation compares total cost at your actual volume.
- API ergonomics that stop at email. A vendor whose event model, templates, and suppression lists end at the email boundary forces you to stand up the same machinery again for your next channel. Senders that run SMS or voice alongside email feel this as a second integration, a second consent record, and a second security review.
Orbit Email API coverage — one product page, one evaluation framework
Devotel Orbit's Email API treats email as one channel on the account: SPF/DKIM/DMARC verification per sending domain, signed lifecycle webhooks, and a single consent record across email, SMS, and voice. The evaluation guide is the framework the per-vendor pages below break down; this hub stitches them together.
Per-vendor callouts — the four head-to-heads
- [Orbit vs SendGrid](/compare/sendgrid) — the incumbent's tier ladder bundles inbound parse and event features per plan. Orbit answers with parity on the send core (one HTTPS call, templates, inbound parse) plus signed lifecycle webhooks on every event, and one unified consent record.
- [Orbit vs Postmark](/compare/postmark) — a strong email-only product with earned deliverability; the comparison is honest about where that focus wins, then lays out what changes when email is one channel on a consolidated account.
- [Orbit vs Mailgun](/compare/mailgun) — the developer-inline incumbent; the page compares routing and event structure and then covers what a unified account adds: one consent record across email, SMS, WhatsApp, and voice.
- [Orbit vs Amazon SES](/compare/amazon-ses) — the cloud-platform incumbent, priced per-thousand with IPs and event destinations on side contracts. Orbit answers with tenant-owned deliverability controls (DMARC aggregate-report ingest, automatic bounce/complaint suppression) on one product surface.
The migration skeleton — four controls, in this order
Authenticate the domain before templates move, templates before webhooks flip, webhooks before suppression mirrors. Every control named is a tenant-owned control — Orbit's surface verifies it; nothing passes through a vendor queue.
- DNS authentication — SPF, DKIM, DMARC. Verify each sending domain on the new surface and hold a green alignment check before you send anything there. Orbit surfaces alignment per sending domain, so you watch this check in-product.
- Templates. Port the template catalog over the API and run a send test against it — so the template version your customers see doesn't change with the vendor underneath it.
- Lifecycle webhooks. Subscribe to sent/delivered/bounced/complained events and verify signatures before you cut over anything. Orbit signs every lifecycle webhook per event, so verification is a documented tenant control.
- Suppression-list mirror. Export the old vendor's bounces, complaints, and unsubscribes; import into the new suppression surface; mirror from the day you cut over. Because Orbit's suppression and consent record spans channels, the fourth step ends with one surface — not one list per channel.
FAQ
Is it safe to migrate while the old vendor still sends? Yes — that is the recommended order. Run both vendors through DNS authentication, mirror suppressions, and cut traffic only after the new surface's alignment check and webhook verification pass.
Do signed email lifecycle webhooks exist on the entry plan? On Orbit, yes — signed lifecycle events are a base control, not a tier. On the incumbents, that varies; check each vendor's head-to-head page above.
Which of the four vendors is Orbit closest to? Closest on the send core: all four. Different on the account: one consent record, one customer record, one pay-as-you-go bill across email, SMS, WhatsApp, and voice.
Where do I go next for the buyer's guide? The best email API providers 2026 listicle ranks the category; the best SendGrid alternatives 2026 listicle does the full migration-side shortlist for the incumbent. This hub is the compare-and-migrate piece those guides point into.