Head to head · SendGrid (Twilio)

SendGrid (Twilio) vs Postmark in 2026: what each costs, what moves, and who switched

Moving from SendGrid (Twilio) to Postmark: what Postmark's importer carries over and what comparison pages claim, labeled by who wrote them, plus how to leave SendGrid (Twilio). Every item links its source.

By Stackcut · Published · Catalog of 2026-10-14 · Vendor prices checked 2026-09-25

Modeled, not measured. Savings use public prices and planning assumptions: the bill you stop paying, minus the new tool, your upkeep time and your setup time at $50/hour, over the first 12 months. Results marked Tested by Stackcut are Stackcut's own test, not a customer. Every price links the page it came from.

The short answer

  • Postmark's official migration guide moves 1 partly; 3 things stay behind. What moves
  • 1 comparison page checked, each labeled with who wrote it. What they claim

What SendGrid (Twilio) and Postmark cost

List prices from each vendor's pricing page, as stored in the Stackcut catalog. Each price links its source.

PlanBilled monthlyBilled yearly (per month)What you get
SendGrid (Twilio) Essentials$19.95/monot shownEssentials 50K: 50,000 emails/mo; overage $0.0013 per email; 1 additional teammate
SendGrid (Twilio) Pro$89.95/monot shownPro 100K: 100,000 emails/mo; overage $0.0011 per email; dedicated IPs, subusers, SSO
SendGrid (Twilio) Essentials 100k$34.95/monot shown100,000 emails/mo; overage $0.0009 per email
SendGrid (Twilio) Pro 300k$249/monot shown300,000 emails/mo; overage $0.0009 per email
  • SendGrid (Twilio) free plan: Free trial: 100 emails/day and 100 contacts for 60 days; limits can't be exceeded twilio.com

Postmark's plans aren't in the Stackcut catalog yet; check Postmark's own site.

What comparison pages say

Each claim as the page makes it, and who it favors. Vendor pages are labeled; weigh them accordingly.

1 pages compared, 1 of them written by one of the two vendors. Claims are the pages' own, paraphrased; prices in them may be older than the catalog prices above.

AboutThe page saysFavorsSource
FeaturesPostmark keeps 45 days of message/event history free; SendGrid gives 3 days free and 30 days as a paid upgrade.PostmarkPostmark vendor page
SupportPostmark advertises a sub-2-hour average first response time with no support-tier upgrade required.PostmarkPostmark vendor page
ReliabilityPostmark separates transactional and broadcast mail into different streams; SendGrid combines them into one, per Postmark.PostmarkPostmark vendor page

Moving from SendGrid (Twilio) to Postmark

What Postmark's importer carries over, what it leaves behind, and any help it offers switchers.

To Postmark

Official guide postmarkapp.com · Tools: MailMason

Moves: Suppressed addresses (partial). postmarkapp.com

Doesn't move: Templates — no automated import; recreate manually or with the open-source MailMason tool; Unsubscribe groups — Postmark uses stream-level suppressions instead; SendGrid's XML API (Postmark is JSON-only) or reseller-program features. postmarkapp.com

Watch out for:

  • SMTP port 465 isn't supported; use 25, 2525 or 587 instead postmarkapp.com
  • 10MB message-size cap vs SendGrid's 30MB, and 50 recipients per message vs SendGrid's 1,000 postmarkapp.com
  • Inbound-message retry window is 10.5 hours vs SendGrid's 3 days postmarkapp.com

From each destination's own migration docs and switching pages, plus community write-ups where no official guide exists, each checked against its page. Confirm terms on the linked page before you rely on an offer.

How to leave SendGrid (Twilio)

Export first, then cancel. Every step links the vendor's own help page, checked on the date shown.

How to leave SendGrid

Export first

  • Contacts (Marketing Campaigns lists): Open a contact list → Action menu (⋮) → export the list to CSV and download it (CSV). Download link stays live for 12 hours after the export is generated; you're emailed when it's ready. twilio.com
  • Suppressions (bounces, invalid emails, spam reports, unsubscribe groups, global suppressions): Each suppression type has its own REST API endpoint (Bounces API, Invalid E-Mails API, Spam Reports API, Unsubscribe Groups, Global Suppressions) in SendGrid's API reference; no bulk CSV export is documented. twilio.com

What you lose

  • Sending from the account, from the first of the next month

Cancel

  1. Point your app at the new provider and check that mail arrives before you cancel.
  2. Twilio Console → Settings → Account Details → Your Products → find the subscription → Cancel Subscription → confirm.
  3. Legacy SendGrid accounts: Account Details → Your Products → Cancel Subscription.
Takes effect
The plan works until the end of the month. From the first day of the next month the account moves to End of Trial, which can't send email.
Sources: support.sendgrid.com twilio.com · Reviewed 2026-09-26

FAQ

Can I move my SendGrid (Twilio) data to Postmark?

Postmark's official guide moves: Suppressed addresses. It doesn't move: Templates — no automated import; recreate manually or with the open-source MailMason tool; Unsubscribe groups — Postmark uses stream-level suppressions instead; SendGrid's XML API (Postmark is JSON-only) or reseller-program features. postmarkapp.com

What do I lose when I leave SendGrid (Twilio)?

Per SendGrid (Twilio)'s own pages, leaving or downgrading loses: Sending from the account, from the first of the next month. support.sendgrid.com

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find_alternatives({"vendor": "SendGrid (Twilio)"})