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Mailmark

mailmark.dev

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Spec score 8.5 #13 of 41 in Transactional Email Software

Spec sheet

Product
Mailmark combines custom-domain email hosting, inbox management, campaigns, an API, and deliverability tools for developers managing multiple products.Read 4 Oct 2026 · mailmark.dev
Free plan
YesRead 20 Sep 2026 · mailmark.dev
Paid from
10Read 20 Sep 2026 · mailmark.dev
Security
Mailmark says data is encrypted in transit with TLS 1.3 and at rest with AES-256, including email content, attachments, account data, and backups.Read 4 Oct 2026 · mailmark.dev
Support
The documentation page says its support team typically responds within 2 hours on business days.Read 4 Oct 2026 · mailmark.dev
Founded
2024Read 28 Sep 2026 · mailmark.dev
API and SDK
Mailmark provides a REST API and a typed JavaScript and TypeScript npm package for transactional and campaign email, scheduling, sequences, and delivery stats.Read 4 Oct 2026 · mailmark.dev
Campaigns
Campaigns support mail merge, personalized fields, automated follow-ups, and tracking for opens, clicks, replies, and bounces.Read 4 Oct 2026 · mailmark.dev
Deliverability
It monitors SPF, DKIM, DMARC, and blacklist status and offers inbox placement testing against Gmail, Outlook, and Yahoo seed inboxes.Read 4 Oct 2026 · mailmark.dev
Delivery methods
apiRead 20 Sep 2026 · mailmark.dev
Domains
It offers guided DNS setup and auto-verification for MX, SPF, DKIM, and DMARC records.Read 4 Oct 2026 · mailmark.dev
Inbox
The email interface includes Inbox, Sent, Outbox, Drafts, and Trash, with rich-text composition, attachments, and full-text search.Read 4 Oct 2026 · mailmark.dev
Infrastructure
Mailmark says it runs on AWS across multiple availability zones and uses AWS SES for delivery and S3 for storage.Read 4 Oct 2026 · mailmark.dev
Monthly send limit
1000Read 20 Sep 2026 · mailmark.dev
Open source and self-hosting
Mailmark describes itself as an open-source project and says it is self-hostable; it began as a solo project in 2024.Read 4 Oct 2026 · mailmark.dev
Team features
Teams can invite collaborators, assign mailboxes by product, and manage permissions from one dashboard.Read 4 Oct 2026 · mailmark.dev
Template options
codeRead 20 Sep 2026 · mailmark.dev
Unsubscribes
Mailmark supports one-click unsubscribe for Gmail and Yahoo and automatically skips opted-out users across products.Read 4 Oct 2026 · mailmark.dev
Warm-up
Mailmark says it ramps up sending volume for each new product domain over 28 days.Read 4 Oct 2026 · mailmark.dev

Plans and prices

Starter $10 a month $10/per month 1,000 emails / month · 500 contacts · 1 custom domain · 3 mailboxes · Full email UI · User campaigns · REST API & npm SDK · Basic support Read 4 Oct 2026 · mailmark.dev
Pro $50 a month $50/per month 25,000 emails / month · 10,000 contacts · 5 custom domains · Unlimited mailboxes · Full email UI · User campaigns · REST API & npm SDK · Priority support Read 4 Oct 2026 · mailmark.dev
Business $100 a month $100/per month 100,000 emails / month · 50,000 contacts · Unlimited domains · Unlimited mailboxes · Full email UI · User campaigns · REST API & npm SDK · Dedicated support Read 4 Oct 2026 · mailmark.dev

Every Mailmark plan and price →

Where Specifiction places it

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