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SPECIFICTION
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MoonMail vs Substack

MoonMail

moonmail.io

Substack

substack.com

Side by side

FigureMoonMailSubstack
Price from$29/moFree
Free planYesYes
Free trialYesYes
Open source——
WebYesYes
iOS—Yes
Android—Yes
APIYesYes
Plans published34
Spec score · Email marketing tools8.2 (#72)9.2 (#8)
Spec score · Email Marketing Software8.1 (#87)8.6 (#41)
Email automationYesYes
Free planThe help page says the free plan includes 2,000 emails per month and basic features, with no credit card required to start.Yes
Audience segmentationYesYes
SupportThe support page lists 24/7 live chat, email support with a stated response within four hours, and phone support Monday to Friday, 9am–6pm EST.Substack directs users to its Help Center for FAQs and walkthroughs and handles subscriber support questions on behalf of writers.

Plans

MoonMail

  • FreeFree
  • Starter$29 a month
  • Pro$79 a month

MoonMail pricing →

Substack

  • Free publishingFree
  • Free to startFree
  • Custom domain$50, paid once
  • Paid subscriptionsPrice not published

Substack pricing →

In their own words

MoonMail

MoonMail has no write-up on Specifiction yet; its figures are above.

Visit moonmail.io

Substack

Substack is a publishing platform for writers, creators, and subscribers, bringing posts, newsletters, podcasts, video, live streams, and pages into one publishing flow. Its editor supports scheduling, autosaved drafts, version history, templates, SEO metadata, and headline A/B testing. Creators can offer free or paid posts, subscriptions, trials, gifts, and group plans. Discovery tools include recommendations, Notes, leaderboards, referrals, and search; audience segmentation and email automation are also available. Podcast episodes can be distributed automatically to Apple Podcasts and Spotify, while video can go automatically to YouTube and LinkedIn. Publishing is free. When creators enable paid subscriptions, Substack keeps 10% of subscription revenue, and Stripe charges payment processing fees. Creators own their intellectual property and mailing list and can export their data. Substack serves writers, journalists, podcasters, video creators, experts, educators, and media companies. It is available on the web, Android, and iOS. Substack directs users to its Help Center and handles subscriber support questions on behalf of writers.

Visit substack.com