I know that opinions of Proton are split due to the company and CEO’s previous behaviour, but this post is purely about the products themselves. These are just my thoughts, which not everyone will agree with.
Appearance
It may just be because I have been using Proton longer, or it may just be my own personal taste, but when you access mail via the website, I find Proton’s nicer to look at.
Apps
Fastmail has a lot more options to choose from when it comes to how you want the layout to look in the app, but both seem easy to use.
Pricing
Free trial
Fastmail and Proton Mail both offer a 30-day free trial.
Fastmail’s free trial is easy to sign up for, which is great. However, from my experience, at least a few of the settings I tested out on Fastmail were not available during the free trial, meaning I would have to sign up for a paid subscription to test them.
Proton Mail’s free trial is a little harder to get, but you only really need it if you want to try Mail Plus, as basic accounts are free. You can only get a free 30-day trial of Proton Mail Plus if you know someone who already uses it.
Plans
Fastmail starts out at £2.70* a month for a basic plan, all the way up to £12.60* a month for the Family plan. You can choose between Basic, Individual, Duo and Family. The plans get cheaper if you pay in advance, and with Fastmail, you can choose between paying per month, per year, every 2 years or every 3 years.
Proton Mail starts with a free account, something which Fastmail do not offer. The paid plans then start at £4.09* a month for an individual plan, up to £24.49 a month for Proton Family. Proton Unlimited gives you all of its services (Mail, Calendar, VPN, Drive, Pass and Wallet) in one. You can choose between Free, Plus, Unlimited, Duo and Family. As with Fastmail, the plans get cheaper if you pay in advance, and you can choose between a month or a year. I do know, though, that with my Unlimited plan, I can pay for 2 years. They also often seem to do discounts so keep an eye out for them.
They both also offer business plans, but for this post, I am only looking at them for an individual.
Usability
Fastmail has a Notes feature, which seems a little basic, but it is nice if you just want to make quick notes, as it is built in and does not require a separate app. This is not an issue for me as I already use a separate app called Notesnook for my notes, as I did not like the one linked with Proton (that may be another post for another day!).
I have been told by someone that had a paid Fastmail subscription that you get 60GB storage. You can pay for more, but it is expensive.
With Proton Mail, the amount of storage you get depends on which plan you choose and starts from 1GB and goes up to 3TB if you choose the Family plan. If you are on a paid plan, they will give you a storage bonus (my last one was 10GB)
Pros and Cons
Fastmail
Pros
- 30-day trial
- Add up to 100 domains
- Cheaper
Cons
- Only email, contacts, files and calendar features
- The 30-day trial is very limited
- No free plan
Proton
Pros
- More features for your money
- Free basic account
- Looks nicer
Cons
- Limited to 3 accounts unless on a business plan, which allows up to 15
- A bit more expensive
* Prices are correct as of 01/09/25.
If there’s ever something that you would like to see me write about (gadgets, etc), then please feel free to contact me. I cannot guarantee I will be able to write about it due to my limited budget and my disability, but I will do my best.





