Postmark
7.6#2 in email deliverability softwareFree planFree planWebAPI
VisitPostmark vs Validity Engage
Validity Engage
5.2#31 in email deliverability softwareWebAPI
VisitWhat both publish
| Fact | Postmark | Validity Engage |
|---|---|---|
| Integrations | Official integrations include Slack, Zapier, Stripe, WordPress, Supabase, Bubble, Craft CMS, Netlify, and Gravity Forms. | Engage terms list MCP, Slack, and Teams integrations, plus Salesforce contact-record deduplication and reconciliation; some capabilities may require third-party subscriptions or Engage Credits. |
| Support | Postmark offers support by email, live chat, and one-on-one calls and reports a 95% customer happiness rating. | Validity lists customer support availability as Monday through Friday, 4 AM–7:30 PM ET, with a help center and customer community. |
Postmark plans
- FreeFree
- Basic$15 a month
- Pro$16.50 a month
- Platform$18 a month
- Custom activity retention$5 a month
- DMARC monitoring$14 a month
Validity Engage plans
- Custom Validity Engage subscriptionPriced on request
Pick Postmark if…
Postmark suits developers who need to send application email through an API or SMTP and track delivery events. Its inbound processing and message streams also suit services handling both incoming and different types of outgoing email.
Pick Validity Engage if…
You want what its maker publishes above — check its page for the details.