News and guides
Practical notes on building and testing HTML email.
· 4 min read
Email on Acid alternatives in 2026
Email on Acid is now Mailgun Inspect, from $99 a month. Here are the alternatives worth a look, what each costs, and which fits a small team.
· 2 min read
Email on Acid is now Mailgun Inspect: what changes for you
Email on Acid customers are moving to Mailgun Inspect. What's different, what it costs, what doesn't come across, and how to decide whether to stay.
· 2 min read
How to make your email work in Apple Mail dark mode
Apple Mail respects dark mode styles if you tell it you have them. Here's the code to add, how to swap logos, and how to check the result.
· 2 min read
Why Gmail clips your email, and how to stay under 102KB
Gmail hides anything past 102KB of HTML behind a "View entire message" link. Here's what counts towards the limit and how to cut your email down.