mailexodus
home/migrations/to Postmark
// migrate to

move to Postmark without rebuilding by hand.

mailexodus normalizes your current platform into one portable schema, then checks what Postmark can actually import. You get a route report before your agent writes anything.

agentUse mailexodus skill: your source → Postmark playbook
// try it

bring your data into Postmark.

Pick the platform you're leaving and generate a route playbook. The report shows what maps cleanly into Postmark's model and what needs review — before you approve writes.

analyzing Klaviyo…
source modeAutomated adapter
source exports8
Postmark imports2
destination gapssubscribers, lists, tags, segments, custom fields, campaigns, automations
data leaves machineno · dry-run
$npx mailexodus@latest migrate --from klaviyo --to postmark --dry-run
agentUse mailexodus skill: Klaviyo → Postmark playbook
running…open the Klaviyo migration guide →
// fit

when Postmark is the right move.

Postmark is a strong fit for teams that want postmark teams separating transactional templates and suppressions from lifecycle email operations. The migration risk is rarely the CSV — it is the automation graph: triggers, delays, branches, template references, and consent state. mailexodus puts a portable schema in the middle so those objects are inspected before they become Postmark objects.

// inbound

what Postmark receives.

can import
  • +
    suppressions
  • +
    templates
needs review
  • ?
    destination mappings still need final operator review
not exposed for import
  • x
    subscribers
  • x
    lists
  • x
    tags
  • x
    segments
  • x
    custom fields
  • x
    campaigns
  • x
    automations
destination adapter

Partial automated adapter

Suppressions map to suppression records. Templates map to transactional templates

Postmark has no native marketing subscriber, list, segment, campaign, or automation export Dry-run the report first, then approve writes when the counts and destination gaps look right.

// before you switch

plan the move to Postmark.

  1. Authenticate your sending domain in Postmark (SPF, DKIM, DMARC) and plan a warmup window — sender reputation is earned here, it does not transfer.
  2. Bring consent and suppression state across first, so unsubscribes and bounces are honored from the first send in Postmark.
  3. QA migrated templates and segments inside Postmark, and send seed tests before any live campaign.
  4. Keep your current platform active until in-flight automations finish and Postmark is warmed and trusted.
// migrate it

start with the route playbook.

The agent prompt returns a route report with source exports, destination imports, skipped objects, and manual-review tasks. When it looks right, wire credentials and approve writes from a controlled machine.

inspect

destination coverage

npx mailexodus@latest info postmark

playbook

agent playbook

Ask mailexodus for a migration_playbook with to=postmark

agentUse mailexodus skill: your source → Postmark playbook
compare Postmark alternatives →browse every migration page →