The following tables compare general and technical information for a number of notable webmail providers who offer a web interface in English.

The list does not include web hosting providers who may offer email server and/or client software as a part of hosting package, or telecommunication providers (mobile network operators, internet service providers) who may offer mailboxes exclusively to their customers.

General

General information on webmail providers and products

ProductReleasedCostMailbox storageAttachment limitSupported languagesNumber of Email Addresses (incl. Aliases)Conversation threading
AOL Mail1993Free (with ads)Unlimited, limited to 1 TB for new accounts25 MB540Yes
Fastmail1999$6/month or $60/year2 GB to 100 GB50 MB37 [citation needed]600, plus 15 for every user in the accountYes
Gmail (Google Account)2004Free (with ads); $6/user/month on the user's domain15 GB (can purchase more)25 MB (10 GB per file via Google Drive)71 [citation needed]30Yes
GMX Mail1997Free (with ads) or Paid (€3–5/month)65 GB (free for gmx.com), 1.5 GB (for gmx.de/gmx.net) [citation needed]50 MB (free), 50–100 MB (paid)English, German, Spanish, FrenchFree: 2 ProMail: 10 TopMail: 50Yes
HEY2020Free 30-day trial $99/year100 GB300 MBEnglish [citation needed]?No
Hushmail1999$49.98 year (Premium)10 GB (Premium) [citation needed]20 MB per file, total 50 MB per mailEnglish [citation needed]?Paid
iCloud2011Free (no ads) or $0.99/month, $2.99/month, or $9.99/month5 GB (Free), 50 GB, 200 GB, or 2 TB monthly [citation needed]20 MB (5 GB per message with Mail Drop via iCloud)4 [citation needed]Free: 3 Paid: unlimited through "Hide My Email"Yes
Kolab Now2013 [citation needed]Free 30-day trial From 4.41 CHF/month (individuals), 5.38 CHF/month (groups)2 GB, can purchase more?English [citation needed]?No
Lycos1997 [citation needed]$4.95 per month $19.95 yearly5 GB [citation needed]35 MB [citation needed]English [citation needed]?Paid
Mail.com1995Free (with ads) or $3.95/month or $19.95/year65 GB30 MBEnglish, Spanish, FrenchFree: 11 (1+10 aliases)Paid
Mail.ru1998Free (with ads) or paid optionsUnlimited [citation needed]2 GB11 [citation needed]?Yes
Mailbox.org201430 day free trial Light: €1/month Standard: €3/month Premium: €9/monthLight: 2 GB Standard: 10 GB Premium: 25 GBLight: no storage Standard: 5 GB Premium: 50 GBEnglish, GermanLight: 3 Standard: 25 Premium: 25Yes
Mailfence2013Free (no ads) €3.50 ($3.85)/month (Entry) €9.50 ($10.45)/month (Pro) €29 ($31.90)/month (Ultra)500 MB (free) 5 GB (Entry) or 20 GB (Pro) or 50 GB (Ultra)10 MB (Free) 50 MB (Entry/Pro/Ultra)11?Paid
Outlook, Hotmail (Microsoft Account)1996 (Hotmail) 2012 (Outlook)Free (with ads); Paid option15 GB32 MB (Unlimited via OneDrive) [citation needed]106 [citation needed]?Yes
Posteo2009€1/month to €1,45/month4 GB storage (can be increased)50 MB32 included up to 20 for an additional charge of 0.10 EUR per alias per monthYes
Proton Mail (Proton Account)2014Free (no ads); Multi-tiered pricing500 MB (free) 1 GB (can be upgraded for free) 5 to 20 GB25 MB10Free: 1 Plus: 10 Ultimate: 15Yes
Rediffmail1997 [citation needed]Free (with ads) and paid: ₹399 (US$4.70)/year for POP3; ₹50 (59¢ US)/month for mobileUnlimited [citation needed]25 MB [citation needed]11 [citation needed]?₹399 (US$4.70)
Startmail20147 day free trial, $4.99/month20 GB25 MBEnglish, GermanUnlimited?
Tuta2011Free (no ads) €36 year (Personal)1 GB Free and Premium, 10 GB Teams; can be upgraded to 10 GB, 100 GB, or 1 TB25 MB30 [citation needed]Free: 1 Revolutionary: 15 Legend: 30No
Yahoo! Mail1997Free (with ads) Yahoo! Mail Plus $49.9920 GB25 MB (150 MB per file via Dropbox)27 [citation needed]Free: 3 Plus: 500Yes
Yandex Mail2000Free (with ads) or paid options5 GB22 MB per file, total 30 MB per mail (2 GB per file via Yandex Disk)10 [citation needed]?Yes
Zoho Mail2008 [citation needed]Personal Free (no ads); Premium options $24 to $99/user yearlyFrom 5 GB up to 100 GB20 MB free, 30 MB or 50 MB paid [citation needed]16 [citation needed]?Paid

Supported protocols

ProductPOP3 supportIMAP supportSMTP supportJMAP supportCryptographic protocol supportIPv6 supportEAS support
AOL MailYesYesYesNoSSL??
FastmailYesYesYesYesSSL, TLSNoNo
Gmail (Google Account)YesYesYesNoSSL, TLSYes?
GMX MailYesYesYesNoSSL, TLSNo?
HEYNoNoNoNoTLSNoNo
HushmailPaidPaidPaidNoSSL, TLS, OpenPGP??
iCloudNoYesYesNoSSL, TLSNo?
Kolab NowYesYesYesNoSSL, TLSNo?
LycosYesYesYesNoSSL, TLS??
Mail.comPaidPaid?NoSSLNo?
Mail.ruYesYesYesNoSSL, TLS??
Mailbox.orgYesYesYesNo???
MailfencePaidPaidYesNoSSL, TLS, OpenPGPNo?
Outlook, Hotmail (Microsoft Account)YesYesYesNoSSL, Exchange ActiveSyncYes?
PosteoYesYesYesNoSSL, TLSNo?
Proton MailPaidPaidNoNoSSL, TLS, OpenPGP, TorNo?
RediffmailPaidPaid?NoSSL, TLS??
StartMailNoYesYesNoSSL, TLS, PFSNo?
TutaNoNoNoNoSSL, DANENo?
Yahoo! MailMost countries or YPOPs!YesYesNoSSLNo?
Yandex MailAppears to require phone number to enable IMAPYes?NoSSL, TLSNo?
Zoho MailPaidPaid?NoSSLPartial?

Digital rights

Verification

How much information users must provide to verify and complete the registration when opening an account (green means less personal information requested):

ProductSMS verificationSecondary email verification
AOL MailYesUnknown
FastMailYesNo
GmailOptionalOptional
GMX Mail (gmx.com)YesYes
HushmailYesYes
iCloudUnknownUnknown
Laposte.netOptionalOptional
LycosYesNo
Mail.comYesNo
Mailbox.orgNoNo
Mail.ruYesUnknown
MailfenceNoYes
Outlook.comNot sureNot sure
Proton MailOptionalOptional
RediffmailYesYes
Seznam.czYesUnknown
TutaNoNo
Yahoo! MailYesNo
Yandex MailYesUnknown
Zoho MailYesYes

Secure delivery

Features to reduce the risk of third-party tracking and interception of the email content; measures to increase the deliverability of correct outbound messages.

ProductAnti-interceptionOutbound anti-spoofing and deliverabilityOther
STARTTLS (outbound)STARTTLS (inbound)Tracking content preventionBasic SPFDefault DKIM
AOL MailNo?????
FastMailYesYesYesYesYes?
GmailYesYesPartial (only images)YesYesAdds ARC, does not enforce DMARC rejection for Gmail.
GMX Mail (gmx.com)???Yes??
Hushmail??????
iCloud?Yes????
Laposte.net??????
Lycos??????
Mail.com??????
Mail.ru?Yes????
Mailbox.orgYesYes?YesYes?
MailfenceNoYesYesYesYes?
Outlook.comYesYesYes??Adds ARC
Proton Mail??Yes (images and pixel tracking)Yes??
Rediffmail??????
Tuta???Yes??
Yahoo! MailNo (yahoo.co.jp)No (yahoo.co.jp)?Yes?DMARC policies incompatible with most mailing lists.
Yandex Mail???Yes??
Zoho Mail??????

Other

ProductVerified privacy and legal defenseVerified (possibly) neutral technologyClaimed privacy policiesInactivity allowed
LocationNo username recyclingFully free software webmailSecure (TLS) webmailTor gateway availableTor browser allowedProxy gateway availableInternet censorship (countries)HTTP tracking cookiesPersonalized adsEmail trackingInformation sharingMax inactivity (days)
AOL MailUSAUnknownNoYes (default)NoYesUnknownUnknownUnknownYesYesYes365
FastMailUSA / AustraliaNoPartial (Roundcube option)Yes (default)NoYesYesUnknownUnknownNoUnknownUnknownUnknown
GmailUSAYesNo (HTML option, requires proprietary JavaScript for ReCAPTCHA)Yes (default)NoRequires Tor users to confirm their identity with SMSNoUnknownYesYesYesYes730
GMX Mail (gmx.com)GermanyUnknownNoYesNoYesUnknownUnknownUnknownUnknownNoUnknown180
HushmailCanadaUnknownNoYes (default)NoYes (2012)UnknownUnknownUnknownNoUnknownNoUnknown
iCloudUSAUnknownNoYes (default)NoUnknownUnknownUnknownUnknownUnknownUnknownUnknownUnknown
Laposte.netFranceUnknownNoYesNoUnknownUnknownNoUnknownUnknownUnknownUnknownUnknown
LycosKoreaUnknownNoYesNoUnknownUnknownUnknownUnknownUnknownUnknownUnknownUnknown
Mail.comUSA / GermanyUnknownNoYesNoYesUnknownUnknownUnknownUnknownUnknownUnknown365
Mail.ruRussiaUnknownNoYes (default)NoYesUnknownUnknownUnknownUnknownUnknownUnknown515
Mailbox.orgGermanyNoYesYes (default)YesYesNoNoNoNoNoNo30 (after contract termination)
MailfenceBelgiumUnknownNoYes (default)NoYesYesNoNoNoNoNo365 (free), forever (paid)
Outlook.comUSAYesNoYes (default)NoRequires Tor users to confirm their identity with SMSUnknownUnknownUnknownNoYesYes365
PosteoGermanyUnknownYes (Roundcube)Yes (default)UnknownUnknownUnknownUnknownUnknownUnknownUnknownUnknownUnknown
Proton MailSwitzerlandYesYesYes (default)YesYesNoRussiaNoNoNoNo (blocked in Russia)365 (free), forever (paid)
RediffmailIndiaUnknownNoYesNoYesUnknownUnknownUnknownUnknownUnknownUnknownUnknown
TutaGermanyYesYes (GPLv3)Yes (default)NoYesNoRussiaNoNoNoNo (blocked in Russia)180
Yahoo! MailUSANoNoYes (default)NoYesUnknownUnknownUnknownYesYesYes365
Yandex MailRussiaUnknownNoYes (default)NoYesUnknownUnknownUnknownYesYesUnknown912
Zoho MailUSA / IndiaUnknownNoYesNoUnknownUnknownUnknownUnknownNoUnknownUnknown270

Unique features

Unique features in webmail products
NameFeatures
FastMailSpam filter; backscatter detection; deletion of selected attachments. Android and iPhone apps.
GmailAccount verification via SMS or voice call in some countries; "Normal" view via Settings; Labels instead of folders; Undo send (implemented as a delayed send)
Laposte.netspam filter, deletion of selected attachments, address book and calendar/agenda, import/export features for mails, contacts and calendar events, custom signatures for each alias, filters (custom rules) for organizing your emails, holiday mode (auto-response), mobile app for smartphones, integration with Digiposte (a virtual safe-deposit box that allows you to safely archive all your documents in a secured place, including legal documents).
MailfenceClient-side encryption with email expiration, Digital signatures, Full OpenPGP inter-operability and support, Integrated account keystore, Multiple PGP keypair support, Public keyserver connection, Full reversibility and key revocation, Full email-suite, Shared mailbox and collaboration with group members
Outlook.comOne-time password, Mobile alerts, Account verification via SMS or voice call in some countries, Rules, Scheduled Cleanup, Filter to e.g. only see newsletters or Emails from contacts, Recover deleted emails; Key encryption for paid accounts
Proton MailClient-side encryption, email expiration, automatic encryption for Proton Mail-Proton Mail emails, optional email encryption for messages from Proton Mail to other providers
Rediffmailsign-in via Google, Yahoo!, Facebook, Twitter, Mobile Sync; Indrive.
TutaClient-side encryption, automatic encryption of mailbox, automatic encryption of emails between Tuta users, optional email encryption for messages from Tuta to other providers
Yandex MailEmail for own domains (Yandex PDD), scheduled email delivery, SMS verification, sign-in via Twitter, VK, Facebook, Google Profile
Zoho MailEmail Sharing, Folder Sharing, Collaborating with other users by Chat/ Social media for organization, Filters, Schedule and send emails, reminders, Notes, Tasks, Bookmarks and so on.

Features

Service NameAutomatic forwardingEmail client accessClient email for other serverIntegration with IM serviceDomain Name customizationInterface script techniqueVirus scanningFilters out emails with executable attachmentsCustom "From:" AddressAddress modifiers (subaddressing)Server hosted public keyring (for encryption)Shared key encryptionZero-knowledge architecture
AOL MailNoYes (POP3, IMAP, SMTP)YesAOL Instant MessengerNoJavaScript/ AjaxYes (McAfee)NoYes?NoNoNo
FastMailYesYes (POP3, IMAP, SMTP)Yes (POP3 only)No (XMPP until 2016-01-31)Some paid plans onlyHTML/ JavaScript/ CSS/AJAXYesConfigurable with user filtering rulesYesPlus addressing and subdomain addressingNoNoNo
GmailYesYes (POP3, IMAP) SSL/TLS supported SMTP restrictedNoGoogle Talkbeta (XMPP), AOL Instant MessengerVia Google Workspace, premium plans onlyHTML/ JavaScript/ AJAXYesYes, including .exe files in zip filesYes, limited. Feature restricted to preconfigured addresses. Addresses not registered in advance with Gmail are blocked.Plus addressingNoNoNo
HushmailBusiness accounts onlyExtra cost?NoBusiness accounts onlyHTML/ JavaScript/ AJAXYes?Yes, unlimited email aliases for paid subscribersNoYesYesNo
iCloud?POP, IMAP, SMTP SSL/TLS supported??iCloud+ subscribers only?Yes??Plus addressing??No
Laposte.netNoYes (POP3, IMAP, SMTP) SSL/TLS supportedYes (POP3, IMAP) SSL/TLS supportedNoNouser can choose between HTML or AjaxYes?Yes (max. 6 alias per email account)NoNoNoNo
Mail.comPremium accounts onlyPremium plans only (POP, IMAP, SMTP SSL/TLS supported)Yes (POP3 only)Google Talk (XMPP)NoHTML/ JavaScript/ AJAX2[broken anchor]YesYes, including .exe files in zip filesYesNoNoNoNo
Mail.ruYesYes (POP3, IMAP)Yes (POP3, IMAP)ICQ, CustomYes (Free, Mail.ru for Business supports up to 5000 mailboxes)HTML/ AJAX (Beta)Yes (Kaspersky)?Yes?NoNoNo
MailfencePaying accounts onlyPaying accounts only (SMTP, POP3, IMAP, Exchange ActiveSync), DAVx supportedYesXMPPPaying accounts onlyHTML/ AJAXYesYes, including .exe files in zip filesPaying accounts onlyPlus addressingYesYesNo
Outlook.comYesYes (POP3, SMTP, IMAP, Microsoft Exchange Server)No (No POP3, but Gmail sync allowed for paid customers)Skype, Google Hangouts, Facebook ChatVia Office 365, some premium plans onlyHTML/ JavaScript/ CSS/AJAXYesYes, including .exe files in zip filesYesPlus addressingVia Office 365Via Office 365No
Proton MailNoPremium plans only through Proton Mail BridgeNoNoPremium plans onlyJavaScript/AJAXYes (ClamAV)NoYesPlus addressingYesYesYes
rediffNoPremium plans only?Rediff BolYesJavaScript/ AJAX2[broken anchor]Yes?Yes?NoNoNo
Seznam.czYesYes (POP3, IMAP, SMTP) SSL/TLS supportedYes (POP3 only)NoYesHTML/ JavaScriptYes (ESET-NOD32)?Yes?NoNoNo
TutanotaNoNo?NoPremium plans onlyJavaScriptNoNoYesNoYesYesYes
Yahoo! MailPremium plan onlyPOP3-Plus members only, but free in some countries, IMAP SSL/TLS supportedYes (POP3 only)Yahoo! MessengerPremium plan onlyHTML/ JavaScript/ CSS/AJAXYes (Norton AntiVirus)Yes, including .exe files in zip filesYes & only 10 addressesPlus addressing (using "-" only)NoNoNo
Yandex MailYesYes (POP3, IMAP, SMTP, SSL)Yes (POP3 only)Ya Online, any XMPP IMYes (Free, Yandex PDD supports up to 1000 mailboxes without verification of legal use)HTML/ JavaScript/ CSS/AJAXYes (Dr.Web)Configurable or/and if discarded by antivirusYes, only from confirmed addressesPlus addressingNoNoNo
Zoho MailYes if you use Zoho domain, if you use your own domain then Premium plans onlyPremium plans only (POP, IMAP, SMTP)Yes (POP)XMPP, Google Talk, AOL Instant Messenger, ICQ, Yahoo! MessengerBusiness plans only, including free planAJAXYes?YesPlus addressingNoNoNo

See also