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SPECIFICTION
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MailUp vs Substack

MailUp

mailup.com

Substack

substack.com

Side by side

FigureMailUpSubstack
Price from€48/moFree
Free plan—Yes
Free trialYesYes
Open source——
WebYesYes
iOS—Yes
Android—Yes
APIYesYes
Plans published44
Spec score · Email marketing tools8.2 (#73)9.2 (#8)
Spec score · Email Marketing Software8.1 (#86)8.6 (#41)
Email automationYesYes
Free planNoYes
IntegrationsMailUp lists integrations and compatibility areas including CRM, CMS, e-commerce, ERP, external databases, and business intelligence systems.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.
SegmentationUsers can filter contacts by data, location, activity, or device and personalize campaigns with dynamic content.Yes
SupportStarter includes email support with requests processed within 4 business hours; Plus adds phone support and Premium includes priority support.Substack directs users to its Help Center for FAQs and walkthroughs and handles subscriber support questions on behalf of writers.

Plans

MailUp

  • Starter€48 a month
  • Plus€113 a month
  • Premium€310 a month
  • EnterprisePriced on request

MailUp pricing →

Substack

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

Substack pricing →

In their own words

MailUp

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

Visit mailup.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