How to choose an email platform

First decide whether you need transactional delivery, consent-based marketing, or both. Evaluate each stream separately so a convenient all-in-one plan does not hide deliverability or compliance gaps.

Decision criteria

CriterionWhat to verifyDecision signal

Message typePassword resets and receipts need different reliability and consent rules from newsletters and campaigns.Required for the shortlist

Deliverability controlsConfirm domain authentication, suppression handling, bounce visibility, and complaint workflows.Required for the shortlist

ConsentThe system must preserve the source and time of consent and make unsubscribe effective for the correct message category.Verify before purchase

PortabilityTest contact, template, event, and suppression exports before committing to proprietary automation.Verify before purchase

Total-cost model

Contacts or messages + dedicated infrastructure if required + template work + monitoring + list hygiene + migration risk.

Skip this if

Skip marketing automation until the permission model, sending domain, and unsubscribe process are tested end to end.

Proof-of-fit checklist

Classify every message stream
Configure SPF, DKIM, and DMARC
Test bounce and complaint handling
Verify unsubscribe with a real inbox
Export contacts and suppressions
Monitor delivery by message type

What changes the answer?

Team size, workflow volume, regulated data, integration depth, support expectations, and switching cost can change the shortlist. Re-run the decision after any of those constraints changes.

Reference standard

Google email sender guidelines

Last methodology review: 11 August 2026. No vendor claim or affiliate offer is active on this page.