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SPECIFICTION
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MailBluster vs Substack

MailBluster

mailbluster.com

Substack

substack.com

Side by side

FigureMailBlusterSubstack
Price from$0.42/moFree
Free planYesYes
Free trialYesYes
Open source——
WebYesYes
iOS—Yes
Android—Yes
APIYesYes
Plans published54
Spec score · Email marketing tools8.6 (#35)9.2 (#8)
Spec score · Email Marketing Software8.5 (#47)8.6 (#41)
Email automationYesYes
Free planYesYes
IntegrationsThe site lists WordPress, WooCommerce, Salesforce, Zapier, Zoho, Make, Pabbly Connect, Integrately, and Monkedo integrations.Official integrations include RSS, podcast distribution to Apple and Spotify, Google Analytics 4, Google Tag Manager, X and Facebook pixels, Google site verification, YouTube and LinkedIn account connections.
SegmentationList segmentation can target subscribers based on opens, clicks, or products they bought.Yes
SupportThe Executive plan includes dedicated one-to-one setup and support, while Managed includes priority support and a dedicated account manager.Substack directs users to its Help Center for FAQs and walkthroughs and handles subscriber support questions on behalf of writers.

Plans

MailBluster

  • StarterFree
  • Pro$5 a year
  • Managed SMTP — 10,000 emails/month$17 a month
  • Executive$10 a year
  • Managed$15.30 a year

MailBluster pricing →

Substack

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

Substack pricing →

In their own words

MailBluster

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

Visit mailbluster.com

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