Email Monster vs Fastmail Masked Email: pricing compared
Last reviewed: 25 September 2026
Fastmail wins if you want to replace your entire inbox with a full paid email provider that happens to include masked addresses. Email Monster wins if you want to keep your current inbox and only add disposable aliases in front of it, at a much lower price with no free trial expiring.
Masked email is a disposable address that forwards into your real inbox so a specific sender can be cut off later. Fastmail bundles this into a full paid email hosting plan, while Email Monster is a lighter, cheaper layer that sits in front of the inbox you already use, such as Gmail or Outlook.
Feature comparison
| Criteria | Email Monster | Fastmail Masked Email |
|---|---|---|
| Price (paid) | $6.99/year or $2.99/month | From $5/month billed yearly for a full mailbox |
| Free tier | Yes, 40 forwarded emails a month | No permanent free plan |
| Alias limit | Unlimited, made up on first use | Included on all tiers, no published cap |
| Custom domain | No, personal subdomain only | Yes, on Standard and Professional tiers |
| Reply from alias | No | No, not a published feature |
| Sender blocking | Yes, per alias | Yes, delete a masked address per sender |
| Newsletter digest | Yes, weekly or daily | No |
| Browser extension | No | No dedicated extension, works via 1Password integration |
| Open source | No | No |
| Jurisdiction | Not published | Fastmail Pty Ltd, Australia; data in EU or USA |
| Best for | Adding aliases to your current inbox | Replacing your inbox provider entirely |
Facts verified on 25 September 2026 against Fastmail's public pricing page.
Where Fastmail Masked Email wins
Fastmail gives you a full mailbox with masked addresses built in, plus real custom domain support on its Standard and Professional plans. If you want one provider for everything, including storage, calendar, and contacts, Fastmail covers more ground than a forwarding only service like Email Monster.
Where Email Monster wins
Email Monster costs $6.99 a year against Fastmail's roughly $60 a year for a single mailbox, and it has a genuine free plan with 40 forwarded emails a month, something Fastmail does not offer at all. You also keep your existing inbox instead of migrating everything to a new provider.
Who should pick which
Pick Fastmail if you are ready to move your whole inbox to a paid provider and want masked addresses as one feature among many. Pick Email Monster if you want to keep Gmail, Outlook, or whatever you already use, and just want a cheap layer of disposable aliases in front of it.
Frequently asked questions
Do I need to switch my whole inbox to use Fastmail Masked Email?
Yes, masked email is a feature of a paid Fastmail mailbox, so you would move your inbox there. Email Monster only forwards to the inbox you already use, so no migration is needed.
Is there a free way to try masked email on Fastmail?
Fastmail does not publish a permanent free plan. Email Monster's free plan covers 40 forwarded emails a month with no time limit and no credit card required.
Which is cheaper for just adding aliases?
Email Monster is cheaper if all you want is aliases, at $6.99 a year versus roughly $60 a year for the least expensive Fastmail plan that includes masked addresses.
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No credit card required. Unlimited aliases on your own subdomain.