Mailchimp Transactional (formerly Mandrill) pricing

As mailchimp.com lists them, read 20 Sept 2026. The maker's own page has the final word.

Plan	Billed and limits	Price
1–20 blocks	billed monthly · 25,000 emails per block · 1–500,000 emails per month · 1–20 blocks	$20 a month
21–40 blocks	billed monthly · 25,000 emails per block · 500,000–1,000,000 emails per month · 21–40 blocks	$18 a month
41–80 blocks	billed monthly · 25,000 emails per block · 1,000,000–2,000,000 emails per month · 41–80 blocks	$16 a month
81–120 blocks	billed monthly · 25,000 emails per block · 2,000,000–3,000,000 emails per month · 81–120 blocks	$14 a month
121–160 blocks	billed monthly · 25,000 emails per block · 3,000,000–4,000,000 emails per month · 121–160 blocks	$12 a month
161+ blocks	billed monthly · 25,000 emails per block · 4,000,000+ emails per month · 161+ blocks	$10 a month
Free trial	—	Free
121-160 blocks	$12 per block	$12 a month
81-120 blocks	$14 per block	$14 a month
41-80 blocks	$16 per block	$16 a month
21-40 blocks	$18 per block	$18 a month
1-20 blocks	$20 per block	$20 a month