Fastmail Email vs GMX Mail

Fastmail Email8.5Visit GMX Mail8.4Visit

Higher score Fastmail Email #7 in Personal Email Services 8.5/10 30-day trial Free trial✓ 2 of 3 features Visit Fastmail

vs

GMX Mail #8 in Personal Email Services 8.4/10 Free plan Free plan✓ 1 of 3 features Visit GMX Mail

• Fastmail Email fits best

  Ad-free paid email with broad clients

• GMX Mail fits best

  People who want a free, feature-rich mailbox

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Fastmail Email 8.5/10 Visit ↗	GMX Mail 8.4/10 Visit ↗
At a glance
Editor score	8.5	8.4
Ranking	#7 in Personal Email Services	#8 in Personal Email Services
Best for	Ad-free paid email with broad clients	People who want a free, feature-rich mailbox
Pricing model	Paid	Free
Starting price	30-day trial	Free plan
Free plan	—	✓ (best)
Free trial	30 days	—
Deployment	Cloud, Desktop, Mobile	Cloud, Mobile, Browser extension
Platforms	Web, Windows, macOS, Linux, iOS, Android	Web, iOS, Android, Chrome extension
Integrations	5 integrations	5 integrations
Features Fastmail Email 2/3 · GMX Mail 1/3
Custom domain	—	Not checked yet
Email aliases	✓	✓
Ad-free inbox	✓ (best)	—
Specs
Mailbox storage	5 GB	Not checked yet
Attachment limit	50 MB	Not checked yet
Platform access	Web_mobile_desktop	Web_and_mobile
Our review
Pros	Ad-free mail with aliases, masked addresses, and custom domains on eligible plans Works across web, desktop, mobile, and supported third-party email clients Includes calendar, contacts, file storage, migration, and offline access	65 GB mailbox storage and attachments up to 50 MB Up to 10 aliases, plus spam and malware filtering Includes PGP encryption, cloud storage, and Online Office
Cons	There is no free plan Custom domains and third-party client support depend on the plan Attachment handling is approximately 50 MB per attachment	The free service is not ad-free Its broad toolset may be more than a basic email user needs Mail, cloud files, office tools, and calendar sit within the GMX ecosystem
Our verdict	Fastmail Email is a paid email service for individuals, families, and businesses that want ad-free mail alongside calendar, contacts, and file storage. It supports web, Windows, macOS, Linux, iOS, and Android access, with deployment across… Read the review →	GMX Mail is a free personal email service from 1&1 Mail & Media GmbH, aimed at people who want more than a basic inbox without paying for a mailbox. It offers up to 65 GB of storage, attachments up to 50 MB, and up to 10 email aliases.… Read the review →

Strengths and trade-offs

• Fastmail Email — where it wins

  • Ad-free mail with aliases, masked addresses, and custom domains on eligible plans
  • Works across web, desktop, mobile, and supported third-party email clients
  • Includes calendar, contacts, file storage, migration, and offline access

  Where it doesn't

  • There is no free plan
  • Custom domains and third-party client support depend on the plan
  • Attachment handling is approximately 50 MB per attachment

• GMX Mail — where it wins

  • 65 GB mailbox storage and attachments up to 50 MB
  • Up to 10 aliases, plus spam and malware filtering
  • Includes PGP encryption, cloud storage, and Online Office

  Where it doesn't

  • The free service is not ad-free
  • Its broad toolset may be more than a basic email user needs
  • Mail, cloud files, office tools, and calendar sit within the GMX ecosystem

• Fastmail Email8.5/10 · 30-day trial

  A paid, ad-free email service with aliases, migration tools, and broad device support.

  Visit FastmailFull verdict →
• GMX Mail8.4/10 · Free plan

  A feature-rich free mailbox with generous storage and useful built-in tools.

  Visit GMX MailFull verdict →