An email builder should not create a pixel-perfect poster. It should create a clear action within inbox, mobile, and accessibility constraints. Bartago uses controlled heading, rich-text, image, button, divider, and spacer blocks and saves immutable versions. Rich text is sanitized, unsafe HTML is rejected, and sender and unsubscribe footers remain mandatory. The marketer’s priorities are hierarchy, responsive preview, personalization fallback, and seed testing.
Create one visual hierarchy
From subject line to CTA
Preview text should add to the subject, not repeat it. Make brand, primary value, and the main CTA clear in the first screen. Use descriptive headings and short paragraphs in a longer message.
Keep blocks responsive
Test the mobile width first
Compress images and provide meaningful alt text. Make buttons touch-friendly, use HTTPS destinations, and maintain sufficient contrast. Do not communicate meaning through color alone.
- One primary heading
- Short paragraphs
- Descriptive CTA
- Alt text
- Mandatory unsubscribe
Version, preview, and seed-test
Keep edit history separate from campaigns
A campaign should snapshot a specific template version. Preview fallback values for missing fields, inspect light and dark inbox behavior, and test links and footers in seed addresses across providers.
Practical checklist
- Subject and preview
- Mobile preview
- Fallback values
- Sanitized blocks
- Alt text
- Unsubscribe test
Key takeaway
A good email template is not decorative complexity; it is fast comprehension and a safe action on mobile.
Final thoughts
Build a small approved family—welcome, announcement, and reminder—instead of one giant master template. Keep immutable versions and run a seed-inbox test before every campaign launch.
Verify consent, provider or carrier policy, and current applicable requirements before launching a campaign.
Start with 100 free automation credits →Common questions
Can I paste raw HTML?
Controlled, sanitized blocks are safer. Scripts, event handlers, and unsafe URLs should be rejected.
Can the unsubscribe footer be removed?
A marketing-email safety and compliance design should keep the mandatory footer.
Sources and editorial note
Last editorial review: August 1, 2026. Product behavior may change with releases; check current documentation.