I think your best bet would be to start or join a startup.
Secure POP/IMAP/Webmail25GB MailboxesOutlook auto-setupRecover deleted email/mailboxesCustom email filteringFree domain and user aliasesChat via Webmail50MB Attachments
LKR600/ mailbox/mo
Plus
Secure POP/IMAP/Webmail25GB MailboxesOutlook auto-setupRecover deleted email/mailboxesCustom email filteringFree domain and user aliasesChat via Webmail50MB AttachmentsMobile Sync to sync contacts and calendars30GB Cloud Drive for storing and sharing documentsOnline editing of documents and spreadsheets
LKR2000/ mailbox/mo
Microsoft Exchange
100GB MailboxesPremium anti-spam and anti-virusActive Sync compatibilityOutlook Web Access (OWA)50MB AttachmentsPublic folders and calendarsActive DirectoryFree distribution listsFree aliases and accepted domainsFree copy of OutlookControl panel for easy management
The payment should be annual if less than 10 mail boxes.
LKR235/ mailbox/mo
Basic 10 Plus
Secure POP/IMAP/Webmail25GB MailboxesOutlook auto-setupRecover deleted email/mailboxesCustom email filteringFree domain and user aliasesChat via Webmail50MB Attachments
LKR215/ mailbox/mo
Basic 50 Plus
Secure POP/IMAP/Webmail25GB MailboxesOutlook auto-setupRecover deleted email/mailboxesCustom email filteringFree domain and user aliasesChat via Webmail50MB Attachments
LKR200/ mailbox/mo
Basic 100 Plus
Secure POP/IMAP/Webmail25GB MailboxesOutlook auto-setupRecover deleted email/mailboxesCustom email filteringFree domain and user aliasesChat via Webmail50MB Attachments
Business Email Hosting Cpanel
LKR14000/ Year
StartUp
50GB Business Email Storage10 Email boxes1 Email domains Web-based Email POP3/IMAP/SMTP Normal Spam Protection Send up to 1000 mails per hour Cpanel Base
LKR25000/ Year
SmallBiz
100GB Business Email Storage50 Email boxes5 Email domains Web-based Email POP3/IMAP/SMTP Normal Spam Protection Send up to 500 mails per hour Professional Spam Protection Cpanel Base
LKR30000/ Year
Medium
150GB Business Email Storage100 Email boxes10 Email domains Web-based Email POP3/IMAP/SMTP Normal Spam Protection Send up to 1000 mails per hour Professional Spam Protection Priority Support Cpanel Base
LKR12000/ Monthly
Corporate
200GB Business Email StorageUnlimited Email boxesUnlimited Email domains Web-based Email POP3/IMAP/SMTP Normal Spam Protection Send up to 1000 mails per hour Professional Spam Protection Priority Support Cpanel Base
OX7 Business Email Hosting
LKR1500/ Year
OX7 Business Email 5GB
Open-Xchange Email Platform Webmail IMAP SyncDrive 5 GB Disk Space POP & IMAP Access Branded SSL Certificates TLS Support Cloudmark Email Protection Identities Powered by Flock Instant Messaging / Chat Document EditingSpreadsheetCollaboration (Real-time editing)Custom ThemesCustom Logos
LKR3000/ Year
OX7 Enterprise Email 30GB
Open-Xchange Email Platform Webmail IMAP Sync5 GB Drive 25 GB Disk Space POP & IMAP Access Branded SSL Certificates TLS Support Cloudmark Email Protection Identities Powered by Flock Instant Messaging / Chat Document EditingSpreadsheetCollaboration (Real-time editing)Custom ThemesCustom Logos