Postmark
7.6#2 in email deliverability softwareFree planFree planWebAPI
VisitPostmark vs Warmup Inbox
Warmup Inbox
6.5#11 in email deliverability softwareFrom $15 a monthWebAPI
VisitWhat both publish
| Fact | Postmark | Warmup Inbox |
|---|---|---|
| Integrations | Official integrations include Slack, Zapier, Stripe, WordPress, Supabase, Bubble, Craft CMS, Netlify, and Gravity Forms. | Listed providers include Gmail and Google Workspace, Outlook and Microsoft 365, Zoho, Amazon SES, Mailgun, SendGrid, Brevo, and custom SMTP inboxes. |
| Security | Postmark supports TLS and HTTPS, DKIM, SPF, DMARC, two-factor authentication, API permission controls, penetration testing, and DDoS protection. | The privacy policy says the company uses SSL or TLS to protect sensitive information and passwords during transmission and uses industry security standards for data transmission and storage. |
| Support | Postmark offers support by email, live chat, and one-on-one calls and reports a 95% customer happiness rating. | The company offers support chat, email contact, and demo booking; Pro and Max plans list priority and premium support respectively. |
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
Warmup Inbox plans
- Basic$15 a month
- Pro$49 a month
- Max$79 a month
- 51 inboxes and upPriced 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 Warmup Inbox if…
Warmup Inbox is presented for sales development teams, marketers, agencies, and recruiters who want to warm inboxes and monitor sender reputation. Its listed connections cover a range of email providers and custom SMTP inboxes.