Tuta (free)

• Pros: Reputation (first ever E2EE mail), fast
• Cons: Search range of 1 month from present date for free users, login with email instead of username

Proton (free)

• Pros: Full search range (Tuta can organise in folder tree), login with username (shorter but not even everyday logging in), comes with Proton Pass (same password for a few trusted services isn't a problem)
• Cons: Small (500 MB)

Mailfence (free)

• Cons: Not even usable, "Authentication disabled for some time" always

PreVeil (free)

• Cons: Doesn't provide email address, sending internally inside PreVeil

CounterMail (free)

• Cons: Can't register, invitations only

Disroot (free)

• Cons: A community, not stable to use

Criptext (free)

• Cons: Cert error. Not available for web, need to download email client

Soverin (free)

• Cons: Requires own domain to make email addresses

Zoho (free)

• Cons: Not actual encrypted mail, OTP sent to the same addressee is no use.

Extensions (not email services):

• Mailvelope, RMail, SecureMyEmail, Mailock

Pay-to-use:

• Hushmail, StartMail, PrivateMail, Virtru, Mailbox, Posteo, Thexyz, Runbox, Kolab Now, Fastmail

Defunct Services:

• Skiff