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
Product Released Cost Mailbox storage Attachment limit Supported languages Number of Email Addresses (incl. Aliases) Conversation threading AOL Mail 1993 25 MB 54 0 Fastmail 1999 2 GB to 100 GB 50 MB 37600, plus 15 for every user in the account Gmail (Google Account) 2004 ; $6/user/month on the user's domain 15 GB (can purchase more) 25 MB(10 GB per file via Google Drive) 71 30 GMX Mail 1997Hintergrund und Geschichte 65 GB (free for gmx.com), 1.5 GB (for gmx.de/gmx.net) 50 MB (free), 50–100 MB (paid) English, German, Spanish, FrenchFree: 2 ProMail: 10 TopMail: 50 HEY 2020 100 GB 300 MB English ? Hushmail 1999 10 GB (Premium) 20 MB per file, total 50 MB per mail English ? iCloud 2011 5 GB (Free), 50 GB, 200 GB, or 2 TB monthly 20 MB (5 GB per message with Mail Drop via iCloud) 4Free: 3Paid: unlimited through "Hide My Email" Kolab Now 2013 2 GB, can purchase more ? English ? Lycos 1997 5 GB 35 MB English ? Mail.com 1995 65 GB 30 MB English, Spanish, French Free: 11 (1+10 aliases) Mail.ru 1998Mail.Ru Group: Главная 2 GB 11 ? mailbox2014 Light: 2 GBStandard: 10 GBPremium: 25 GB Light: no storageStandard: 5 GBPremium: 50 GB English, German Light: 3Standard: 25Premium: 25 Mailfence 2013 500 MB (free)5 GB (Entry) or 20 GB (Pro) or 50 GB (Ultra) 10 MB (Free) 50 MB (Entry/Pro/Ultra) 11 ? Outlook, Hotmail (Microsoft Account) 1996 (Hotmail)2012 (Outlook) 15 GB 32 MB (Unlimited via OneDrive) 106 ? Posteo 2009 4 GB storage(can be increased) 50 MB 3 2 included up to 20 for an additional charge of 0.10 EUR per alias per month Proton Mail (Proton Account) 2014 500 MB (free) 1 GB (can be upgraded for free)5 to 20 GB 25 MB 10Free: 1Plus: 10Ultimate: 15 Rediffmail 1997 25 MB 11 ? Startmail2014 20 GB25 MBEnglish, GermanUnlimited ? Tuta 2011 1 GB Free and Premium, 10 GB Teams; can be upgraded to 10 GB, 100 GB, or 1 TB 25 MB 30Free: 1 Revolutionary: 15 Legend: 30 Yahoo! Mail 1997 15 GB 25 MB(150 MB per file via Dropbox) 27Free: 3Plus: 500 Yandex Mail 2000 5 GB 22 MB per file, total 30 MB per mail (2 GB per file via Yandex Disk) 10 ? Zoho Mail 2008 From 5 GB up to 100 GB 20 MB free, 30 MB or 50 MB paid 16 ?
Supported protocols
Product POP3 support IMAP support SMTP support JMAP support Cryptographic protocol support IPv6 support EAS support AOL Mail Fastmail Gmail (Google Account) GMX Mail HEY Hushmail iCloud Kolab Now Lycos Mail.com Mail.ru mailbox Mailfence Outlook, Hotmail (Microsoft Account) Posteo Proton Mail Rediffmail StartMail Tuta Yahoo! Mail Yandex Mail Appears to require a phone number to enable IMAP Zoho Mail
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):
Product SMS verification Secondary email verification AOL Mail FastMail Gmail GMX Mail(gmx.com) Hushmail iCloud Laposte.net Lycos Mail.com mailbox Mail.ru Mailfence Outlook.com Proton Mail Rediffmail Seznam.cz Tuta Yahoo! Mail Yandex Mail Zoho Mail
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.
Product Anti-interception Outbound anti-spoofing and deliverability Other STARTTLS (outbound) STARTTLS (inbound) Tracking content prevention Basic SPFDefault DKIMAOL Mail ? ? ? ? ?FastMail ?Gmail (only images) Adds ARC, does not enforce DMARC rejection for Gmail.GMX Mail(gmx.com) ? ? ? ? ?Hushmail ? ? ? ? ? ?iCloud ? ? ? ? ?Laposte.net ? ? ? ? ? ?Lycos ? ? ? ? ? ?Mail.com ? ? ? ? ? ?Mail.ru ? ? ? ? ?mailbox ? ?Mailfence ?Outlook.com ? ? Adds ARCProton Mail ? ? (images and pixel tracking) ? ?Rediffmail ? ? ? ? ? ?Tuta ? ? ? ? ?Yahoo! Mail (yahoo.co.jp) (yahoo.co.jp) ? ? DMARC policies incompatible with most mailing lists.Yandex Mail ? ? ? ? ?Zoho Mail ? ? ? ? ? ?
Other
Product Verified privacy and legal defense Verified (possibly) neutral technology Claimed privacy policies Inactivity allowedLocationNo username recycling Fully free software webmail Secure (TLS) webmail Tor gateway available Tor browser allowedProxy gateway available Internet censorship (countries) HTTP tracking cookiesPersonalized adsEmail trackingInformation sharingMax inactivity (days)AOL Mail USA (default) 365FastMail USA / Australia (Roundcube option) (default) Gmail USA (HTML option, requires proprietary JavaScript for ReCAPTCHA) (default) 730GMX Mail(gmx.com) Germany 180HushmailCanada (default) (2012) iCloud USA (default) Laposte.netFranceLycos Korea Mail.com USA / Germany 365Mail.ru Russia Some free software available at https://github.com/mailru (default) 515mailbox Germany (default) 30 (after contract termination)MailfenceBelgium (default) 365 (free), forever (paid)Outlook.com USA (default) 365Posteo Germany (Roundcube) (default) Proton MailSwitzerland (default) (blocked in Russia) 365 (free), forever (paid)RediffmailIndia TutaGermany (GPLv3) (default) (blocked in Russia) 180Yahoo! Mail USA (default) 365Yandex Mail Russia (default) 912Zoho Mail USA / India 270
Unique features
+ Unique features in webmail products Name Features FastMail Spam filter; backscatter detection; deletion of selected attachments. Android and iPhone apps. Gmail Account 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). Mailfence Client-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.com One-time password, Mobile alerts, Account verification via SMS or voice call in some countries, Rules,Clean, clutter-free inbox Outlook.com Scheduled Cleanup, Filter to e.g. only see newsletters or Emails from contacts, Recover deleted emails;Recover deleted messages Outlook.com Key encryption for paid accounts Proton Mail Client-side encryption, email expiration, automatic encryption for Proton Mail-Proton Mail emails, optional email encryption for messages from Proton Mail to other providers Rediffmail sign-in via Google, Yahoo!, Facebook, Twitter, Mobile Sync; Indrive. Tuta Client-side encryption, automatic encryption of mailbox, automatic encryption of emails between Tuta users, optional email encryption for messages from Tuta to other providers Yandex Mail Email for own domains (Yandex PDD), scheduled email delivery, SMS verification, sign-in via Twitter, VK, Facebook, Google Profile Zoho Mail Email 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 Name Automatic forwarding Email client access Client email for other server Integration with IM service DomainNamecustomization Interfacescripttechnique Virus scanning Filters out emails with executable attachments Custom "From:" Address Address modifiers (subaddressing) Server hosted public keyring (for encryption) Shared key encryption Zero-knowledge architectureAOL Mail (POP3, IMAP, SMTP) AOL Instant Messenger JavaScript/ Ajax (McAfee) FastMail (POP3, IMAP, SMTP) (POP3 only) (XMPP until 2016-01-31) HTML/ JavaScript/ CSS/AJAX Configurable with user filtering rules Gmail (POP3, IMAP)SSL/TLS supportedSMTP restricted Google Talkbeta (XMPP), AOL Instant Messenger HTML/ JavaScript/ AJAX , including .exe files in zip files Yes, limited.Feature restricted to preconfigured addresses. Addresses not registered in advance with Gmail are blocked. Hushmail HTML/ JavaScript/ AJAX , unlimited email aliases for paid subscribers iCloud Laposte.net (POP3, IMAP, SMTP) SSL/TLS supported (POP3, IMAP) SSL/TLS supported user can choose between HTML or Ajax (max. 6 alias per email account) Mail.com (POP3 only)Google Talk (XMPP) HTML/ JavaScript/ AJAX2 , including .exe files in zip files Mail.ru (POP3, IMAP) (POP3, IMAP)ICQ, Custom (Free, Mail.ru for Business supports up to 5000 mailboxes)HTML/ AJAX (Beta) (Kaspersky) Mailfence (SMTP, POP3, IMAP, Exchange ActiveSync), DAVx supported XMPP HTML/ AJAX , including .exe files in zip files Outlook.com (POP3, SMTP, IMAP, Microsoft Exchange Server) (No POP3, but Gmail sync allowed for paid customers)Skype, Google Hangouts, Facebook Chat HTML/ JavaScript/ CSS/AJAX , including .exe files in zip files Proton Mail JavaScript/AJAX (ClamAV) rediff Rediff Bol JavaScript/ AJAX2 Seznam.cz (POP3, IMAP, SMTP)SSL/TLS supported (POP3 only) HTML/ JavaScript (ESET-NOD32) Tutanota JavaScript Yahoo! Mail SSL/TLS supported (POP3 only)Yahoo! Messenger HTML/ JavaScript/ CSS/AJAX (Norton AntiVirus) , including .exe files in zip files & only 10 addresses Yandex Mail (POP3, IMAP, SMTP, SSL) (POP3 only) (Free, Yandex PDD supports up to 1000 mailboxes without verification of legal use)HTML/ JavaScript/ CSS/AJAX (Dr.Web) Configurable or/and if discarded by antivirus , only from confirmed addresses Zoho Mail AJAX
See also
Comparison of web search engines - often merged with webmail by companies that host both services Comparison of email clients - apps that run on an operating system (OS)
References